PCRB follow up client side logic

MesaFabApproval.Client.Test/ApprovalServiceTests.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+using MesaFabApproval.Client.Services;
+using MesaFabApproval.Shared.Models;
+
+using Microsoft.Extensions.Caching.Memory;
+
+using Moq;
+using Moq.Protected;
+
+using Xunit;
+
+namespace MesaFabApproval.Client.Test;
+
+public class ApprovalServiceTests {
+    private readonly Mock<IMemoryCache> _cacheMock;
+    private readonly Mock<IHttpClientFactory> _httpClientFactoryMock;
+    private readonly ApprovalService _approvalService;
+
+    public ApprovalServiceTests() {
+        _cacheMock = new Mock<IMemoryCache>();
+        _httpClientFactoryMock = new Mock<IHttpClientFactory>();
+        _approvalService = new ApprovalService(_cacheMock.Object, _httpClientFactoryMock.Object);
+    }
+
+    [Fact]
+    public async Task DeleteApproval_ValidApprovalID_DeletesApproval() {
+        int approvalID = 1;
+
+        Mock<HttpMessageHandler> handlerMock = new Mock<HttpMessageHandler>();
+
+        handlerMock
+            .Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(req => req.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>()
+            )
+            .ReturnsAsync(new HttpResponseMessage {
+                StatusCode = HttpStatusCode.OK,
+            });
+
+        HttpClient httpClient = new HttpClient(handlerMock.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _httpClientFactoryMock.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _approvalService.DeleteApproval(approvalID);
+
+        handlerMock.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(req => req.Method == HttpMethod.Delete),
+            ItExpr.IsAny<CancellationToken>()
+        );
+    }
+
+    [Fact]
+    public async Task DeleteApproval_InvalidApprovalID_ThrowsArgumentException() {
+        int approvalID = 0;
+
+        await Assert.ThrowsAsync<ArgumentException>(() => _approvalService.DeleteApproval(approvalID));
+    }
+
+    [Fact]
+    public async Task DeleteApproval_DeletionFails_ThrowsException() {
+        int approvalID = 1;
+
+        Mock<HttpMessageHandler> handlerMock = new Mock<HttpMessageHandler>();
+        handlerMock
+            .Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(req => req.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>()
+            )
+            .ReturnsAsync(new HttpResponseMessage {
+                StatusCode = HttpStatusCode.BadRequest,
+                ReasonPhrase = "Bad Request"
+            });
+
+        HttpClient httpClient = new HttpClient(handlerMock.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _httpClientFactoryMock.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _approvalService.DeleteApproval(approvalID));
+    }
+}

MesaFabApproval.Client.Test/MockMemoryCacheService.cs

@@ -0,0 +1,18 @@
+using Microsoft.Extensions.Caching.Memory;
+
+using Moq;
+
+namespace MesaFabApproval.Client.Test;
+
+public static class MockMemoryCacheService {
+    public static Mock<IMemoryCache> GetMemoryCache(object expectedValue) {
+        Mock<IMemoryCache> mockMemoryCache = new Mock<IMemoryCache>();
+        mockMemoryCache
+            .Setup(x => x.TryGetValue(It.IsAny<object>(), out expectedValue))
+            .Returns(true);
+        mockMemoryCache
+            .Setup(x => x.CreateEntry(It.IsAny<object>()))
+            .Returns(Mock.Of<ICacheEntry>());
+        return mockMemoryCache;
+    }
+}

MesaFabApproval.Client.Test/PCRBFollowUpCommentTests.cs

@@ -0,0 +1,320 @@
+using System.Net;
+using System.Text.Json;
+
+using MesaFabApproval.Client.Services;
+using MesaFabApproval.Shared.Models;
+
+using Microsoft.Extensions.Caching.Memory;
+
+using Moq;
+using Moq.Protected;
+
+using MudBlazor;
+
+namespace MesaFabApproval.Client.Test;
+
+public class PCRBFollowUpCommentTests {
+    private readonly Mock<IMemoryCache> _mockCache;
+    private readonly Mock<IHttpClientFactory> _mockHttpClientFactory;
+    private readonly Mock<ISnackbar> _mockSnackbar;
+    private readonly Mock<IUserService> _mockUserService;
+    private readonly PCRBService _pcrbService;
+
+    private static PCRBFollowUpComment FOLLOW_UP_COMMENT = new PCRBFollowUpComment {
+        ID = 1,
+        PlanNumber = 123,
+        FollowUpID = 1,
+        Comment = "Test Comment",
+        UserID = 1
+    };
+
+    private static HttpResponseMessage GET_RESPONSE = new HttpResponseMessage {
+        StatusCode = HttpStatusCode.OK,
+        Content = new StringContent(JsonSerializer.Serialize(new List<PCRBFollowUpComment> { FOLLOW_UP_COMMENT }))
+    };
+
+    private static IEnumerable<PCRBFollowUpComment> FOLLOW_UPS_COMMENTS = new List<PCRBFollowUpComment>() { FOLLOW_UP_COMMENT };
+
+    private static HttpResponseMessage SUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.OK);
+    private static HttpResponseMessage UNSUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.InternalServerError);
+
+    public PCRBFollowUpCommentTests() {
+        _mockCache = MockMemoryCacheService.GetMemoryCache(FOLLOW_UPS_COMMENTS);
+        _mockHttpClientFactory = new Mock<IHttpClientFactory>();
+        _mockSnackbar = new Mock<ISnackbar>();
+        _mockUserService = new Mock<IUserService>();
+
+        _pcrbService = new PCRBService(
+            _mockCache.Object,
+            _mockHttpClientFactory.Object,
+            _mockSnackbar.Object,
+            _mockUserService.Object);
+    }
+
+    [Fact]
+    public async Task CreateFollowUpComment_WithValidParams_ShouldCallHttpPost_AndRefreshCache() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.CreateFollowUpComment(FOLLOW_UP_COMMENT);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req => 
+                    req.Method == HttpMethod.Post &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComment")),
+            ItExpr.IsAny<CancellationToken>());
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req => 
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComments?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task CreateFollowUpComment_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.CreateFollowUpComment(FOLLOW_UP_COMMENT));
+    }
+
+    [Fact]
+    public async Task CreateFollowUpComment_WithNullParam_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.CreateFollowUpComment(null));
+    }
+
+    [Fact]
+    public async Task GetFollowUpCommentsByPlanNumber_WithBypassCache_ShouldCallHttpGetAndReturnFollowUps() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        IEnumerable<PCRBFollowUpComment> comments = await _pcrbService.GetFollowUpCommentsByPlanNumber(123, true);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComments?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+
+        Assert.Single(comments);
+    }
+
+    [Fact]
+    public async Task GetFollowUpCommentsByPlanNumber_WithoutBypassCache_ShouldReturnFollowUpsFromCache() {
+        IEnumerable<PCRBFollowUpComment> comments = await _pcrbService.GetFollowUpCommentsByPlanNumber(1, false);
+        Assert.Single(comments);
+    }
+
+    [Fact]
+    public async Task GetFollowUpCommentsByPlanNumber_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.GetFollowUpCommentsByPlanNumber(1, true));
+    }
+
+    [Fact]
+    public async Task UpdateFollowUpComment_WithValidParams_ShouldCallHttpPut() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.UpdateFollowUpComment(FOLLOW_UP_COMMENT);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Put &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComment")),
+            ItExpr.IsAny<CancellationToken>());
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComments?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task UpdateFollowUpComment_WithNullParam_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.UpdateFollowUpComment(null));
+    }
+
+    [Fact]
+    public async Task UpdateFollowUpComment_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.UpdateFollowUpComment(FOLLOW_UP_COMMENT));
+    }
+
+    [Fact]
+    public async Task DeleteFollowUpComment_WithValidParams_ShouldCallHttpDelete() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.DeleteFollowUpComment(1);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Delete &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUpComment?id=1")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task DeleteFollowUpComment_WithBadId_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentException>(() => _pcrbService.DeleteFollowUpComment(0));
+    }
+
+    [Fact]
+    public async Task DeleteFollowUpComment_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.DeleteFollowUpComment(1));
+    }
+}

MesaFabApproval.Client.Test/PCRBFollowUpTests.cs

@@ -0,0 +1,321 @@
+using System.Net;
+using System.Text.Json;
+
+using MesaFabApproval.Client.Services;
+using MesaFabApproval.Shared.Models;
+
+using Microsoft.Extensions.Caching.Memory;
+
+using Moq;
+using Moq.Protected;
+
+using MudBlazor;
+
+namespace MesaFabApproval.Client.Test;
+
+public partial class PCRBFollowUpTests {
+    private readonly Mock<IMemoryCache> _mockCache;
+    private readonly Mock<IHttpClientFactory> _mockHttpClientFactory;
+    private readonly Mock<ISnackbar> _mockSnackbar;
+    private readonly Mock<IUserService> _mockUserService;
+    private readonly PCRBService _pcrbService;
+
+    private static PCRBFollowUp FOLLOW_UP = new PCRBFollowUp {
+        ID = 1,
+        PlanNumber = 123,
+        Step = 1,
+        FollowUpDate = DateTime.Now
+    };
+
+    private static HttpResponseMessage GET_RESPONSE = new HttpResponseMessage {
+        StatusCode = HttpStatusCode.OK,
+        Content = new StringContent(JsonSerializer.Serialize(new List<PCRBFollowUp> { FOLLOW_UP }))
+    };
+
+    private static IEnumerable<PCRBFollowUp> FOLLOW_UPS = new List<PCRBFollowUp>() {
+        new PCRBFollowUp { ID = 1, PlanNumber = 1, Step = 1, FollowUpDate = DateTime.Now }
+    };
+
+    private static HttpResponseMessage SUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.OK);
+    private static HttpResponseMessage UNSUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.InternalServerError);
+
+    public PCRBFollowUpTests() {
+        _mockCache = MockMemoryCacheService.GetMemoryCache(FOLLOW_UPS);
+        _mockHttpClientFactory = new Mock<IHttpClientFactory>();
+        _mockSnackbar = new Mock<ISnackbar>();
+        _mockUserService = new Mock<IUserService>();
+
+        _pcrbService = new PCRBService(
+            _mockCache.Object,
+            _mockHttpClientFactory.Object,
+            _mockSnackbar.Object,
+            _mockUserService.Object);
+    }
+
+    [Fact]
+    public async Task CreateFollowUp_WithValidParams_ShouldCallHttpPost_AndRefreshCache() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.CreateFollowUp(FOLLOW_UP);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req => 
+                    req.Method == HttpMethod.Post &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp")),
+            ItExpr.IsAny<CancellationToken>());
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req => 
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUps?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task CreateFollowUp_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.CreateFollowUp(FOLLOW_UP));
+    }
+
+    [Fact]
+    public async Task CreateFollowUp_WithNullParam_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.CreateFollowUp(null));
+    }
+
+    [Fact]
+    public async Task GetFollowUpsByPlanNumber_WithBypassCache_ShouldCallHttpGetAndReturnFollowUps() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        IEnumerable<PCRBFollowUp> followUps = await _pcrbService.GetFollowUpsByPlanNumber(123, true);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUps?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+
+        Assert.Single(followUps);
+    }
+
+    [Fact]
+    public async Task GetFollowUpsByPlanNumber_WithoutBypassCache_ShouldReturnFollowUpsFromCache() {
+        IEnumerable<PCRBFollowUp> followUps = await _pcrbService.GetFollowUpsByPlanNumber(1, false);
+        Assert.Single(followUps);
+    }
+
+    [Fact]
+    public async Task GetFollowUpsByPlanNumber_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.GetFollowUpsByPlanNumber(1, true));
+    }
+
+    [Fact]
+    public async Task UpdateFollowUp_WithValidParams_ShouldCallHttpPut() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(GET_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.UpdateFollowUp(FOLLOW_UP);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Put &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp")),
+            ItExpr.IsAny<CancellationToken>());
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Get &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUps?planNumber=123&bypassCache=True")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task UpdateFollowUp_WithNullParam_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.UpdateFollowUp(null));
+    }
+
+    [Fact]
+    public async Task UpdateFollowUp_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.UpdateFollowUp(FOLLOW_UP));
+    }
+
+    [Fact]
+    public async Task DeleteFollowUp_WithValidParams_ShouldCallHttpDelete() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await _pcrbService.DeleteFollowUp(1);
+
+        mockHttpMessageHandler.Protected().Verify(
+            "SendAsync",
+            Times.Once(),
+            ItExpr.Is<HttpRequestMessage>(
+                req =>
+                    req.Method == HttpMethod.Delete &&
+                    req.RequestUri != null &&
+                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp?id=1")),
+            ItExpr.IsAny<CancellationToken>());
+    }
+
+    [Fact]
+    public async Task DeleteFollowUp_WithBadId_ShouldThrowException() {
+        await Assert.ThrowsAsync<ArgumentException>(() => _pcrbService.DeleteFollowUp(0));
+    }
+
+    [Fact]
+    public async Task DeleteFollowUp_WithBadResponse_ShouldThrowException() {
+        Mock<HttpMessageHandler> mockHttpMessageHandler = new Mock<HttpMessageHandler>();
+
+        mockHttpMessageHandler.Protected()
+            .Setup<Task<HttpResponseMessage>>(
+                "SendAsync",
+                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
+                ItExpr.IsAny<CancellationToken>())
+            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
+            .Verifiable();
+
+        HttpClient httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+            BaseAddress = new Uri("https://localhost:5000")
+        };
+
+        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+
+        await Assert.ThrowsAsync<Exception>(() => _pcrbService.DeleteFollowUp(1));
+    }
+}

MesaFabApproval.Client.Test/PCRBServiceTests.cs

@@ -1,5 +1,6 @@
 using System.Net;
-using System.Text.Json;
+using System.Net.Http;
+using System.Threading.Tasks;
 
 using MesaFabApproval.Client.Services;
 using MesaFabApproval.Shared.Models;
@@ -11,6 +12,8 @@ using Moq.Protected;
 
 using MudBlazor;
 
+using Xunit;
+
 namespace MesaFabApproval.Client.Test;
 
 public class PCRBServiceTests {
@@ -18,330 +21,136 @@ public class PCRBServiceTests {
     private readonly Mock<IHttpClientFactory> _mockHttpClientFactory;
     private readonly Mock<ISnackbar> _mockSnackbar;
     private readonly Mock<IUserService> _mockUserService;
+    private readonly Mock<PCRB> _mockPCRB;
+    private readonly Mock<Approval> _mockApproval;
+
     private readonly PCRBService _pcrbService;
 
-    private static IEnumerable<PCRBFollowUp> FOLLOW_UPS = new List<PCRBFollowUp>() {
-        new PCRBFollowUp { ID = 1, PlanNumber = 1, Step = 1, FollowUpDate = DateTime.Now }
-    };
-
-    private static HttpResponseMessage SUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.OK);
-    private static HttpResponseMessage UNSUCCESSFUL_RESPONSE = new HttpResponseMessage(HttpStatusCode.InternalServerError);
-
-    public static class MockMemoryCacheService {
-        public static Mock<IMemoryCache> GetMemoryCache(object expectedValue) {
-            Mock<IMemoryCache> mockMemoryCache = new Mock<IMemoryCache>();
-            mockMemoryCache
-                .Setup(x => x.TryGetValue(It.IsAny<object>(), out expectedValue))
-                .Returns(true);
-            mockMemoryCache
-                .Setup(x => x.CreateEntry(It.IsAny<object>()))
-                .Returns(Mock.Of<ICacheEntry>());
-            return mockMemoryCache;
-        }
-    }
-
     public PCRBServiceTests() {
-        _mockCache = MockMemoryCacheService.GetMemoryCache(FOLLOW_UPS);
+        _mockCache = new Mock<IMemoryCache>();
         _mockHttpClientFactory = new Mock<IHttpClientFactory>();
         _mockSnackbar = new Mock<ISnackbar>();
         _mockUserService = new Mock<IUserService>();
+        _mockPCRB = new Mock<PCRB>();
+        _mockApproval = new Mock<Approval>();
 
         _pcrbService = new PCRBService(
             _mockCache.Object,
             _mockHttpClientFactory.Object,
             _mockSnackbar.Object,
-            _mockUserService.Object);
+            _mockUserService.Object
+        );
     }
 
     [Fact]
-    public async Task CreateFollowUp_WithValidParams_ShouldCallHttpPost_AndRefreshCache() {
-        PCRBFollowUp followUp = new PCRBFollowUp {
-            ID = 1,
-            PlanNumber = 123,
-            Step = 1,
-            FollowUpDate = DateTime.Now,
-            Comments = "Test"
+    public async Task NotifyApprover_ShouldSendNotification() {
+        PCRBNotification notification = new PCRBNotification {
+            Message = "Test Message",
+            PCRB = _mockPCRB.Object,
+            Approval = _mockApproval.Object
         };
 
-        HttpResponseMessage getResponse = new HttpResponseMessage {
-            StatusCode = HttpStatusCode.OK,
-            Content = new StringContent(JsonSerializer.Serialize(new List<PCRBFollowUp> { followUp }))
-        };
-
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-        mockHttpMessageHandler.Protected()
+        Mock<HttpMessageHandler> handlerMock = new Mock<HttpMessageHandler>();
+        handlerMock
+            .Protected()
             .Setup<Task<HttpResponseMessage>>(
                 "SendAsync",
                 ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(SUCCESSFUL_RESPONSE)
+                ItExpr.IsAny<CancellationToken>()
+            )
+            .ReturnsAsync(new HttpResponseMessage {
+                StatusCode = HttpStatusCode.OK
+            })
             .Verifiable();
 
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(getResponse)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+        HttpClient httpClient = new HttpClient(handlerMock.Object) {
             BaseAddress = new Uri("https://localhost:5000")
         };
+
         _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
 
-        await _pcrbService.CreateFollowUp(followUp);
+        await _pcrbService.NotifyApprover(notification);
 
-        mockHttpMessageHandler.Protected().Verify(
+        handlerMock.Protected().Verify(
             "SendAsync",
             Times.Once(),
-            ItExpr.Is<HttpRequestMessage>(
-                req => 
-                    req.Method == HttpMethod.Post &&
-                    req.RequestUri != null &&
-                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp")),
-            ItExpr.IsAny<CancellationToken>());
-
-        mockHttpMessageHandler.Protected().Verify(
-            "SendAsync",
-            Times.Once(),
-            ItExpr.Is<HttpRequestMessage>(
-                req => 
-                    req.Method == HttpMethod.Get &&
-                    req.RequestUri != null &&
-                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUps?planNumber=123&bypassCache=True")),
-            ItExpr.IsAny<CancellationToken>());
+            ItExpr.Is<HttpRequestMessage>(req =>
+                req.Method == HttpMethod.Post &&
+                req.RequestUri == new Uri("https://localhost:5000/pcrb/notify/approver")
+            ),
+            ItExpr.IsAny<CancellationToken>()
+        );
     }
 
     [Fact]
-    public async Task CreateFollowUp_WithBadResponse_ShouldThrowException() {
-        PCRBFollowUp followUp = new PCRBFollowUp {
-            ID = 1,
-            PlanNumber = 123,
-            Step = 1,
-            FollowUpDate = DateTime.Now,
-            Comments = "Test"
+    public async Task NotifyApprover_ShouldThrowException_WhenResponseIsNotSuccess() {
+        PCRBNotification notification = new PCRBNotification {
+            Message = "Test Message",
+            PCRB = _mockPCRB.Object,
+            Approval = _mockApproval.Object
         };
 
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-        mockHttpMessageHandler.Protected()
+        var handlerMock = new Mock<HttpMessageHandler>();
+        handlerMock
+            .Protected()
             .Setup<Task<HttpResponseMessage>>(
                 "SendAsync",
                 ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Post),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
-            .Verifiable();
+                ItExpr.IsAny<CancellationToken>()
+            )
+            .ReturnsAsync(new HttpResponseMessage {
+                StatusCode = HttpStatusCode.BadRequest,
+                ReasonPhrase = "Bad Request"
+            });
 
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
-        };
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
-
-        await Assert.ThrowsAsync<Exception>(() => _pcrbService.CreateFollowUp(followUp));
-    }
-
-    [Fact]
-    public async Task CreateFollowUp_WithNullParam_ShouldThrowException() {
-        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.CreateFollowUp(null));
-    }
-
-    [Fact]
-    public async Task GetFollowUpsByPlanNumber_WithBypassCache_ShouldCallHttpGetAndReturnFollowUps() {
-        PCRBFollowUp followUp = new PCRBFollowUp {
-            ID = 1,
-            PlanNumber = 123,
-            Step = 1,
-            FollowUpDate = DateTime.Now,
-            Comments = "Test"
-        };
-
-        HttpResponseMessage getResponse = new HttpResponseMessage {
-            StatusCode = HttpStatusCode.OK,
-            Content = new StringContent(JsonSerializer.Serialize(new List<PCRBFollowUp> { followUp }))
-        };
-
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(getResponse)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
-        };
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
-
-        IEnumerable<PCRBFollowUp> followUps = await _pcrbService.GetFollowUpsByPlanNumber(123, true);
-
-        mockHttpMessageHandler.Protected().Verify(
-            "SendAsync",
-            Times.Once(),
-            ItExpr.Is<HttpRequestMessage>(
-                req =>
-                    req.Method == HttpMethod.Get &&
-                    req.RequestUri != null &&
-                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUps?planNumber=123&bypassCache=True")),
-            ItExpr.IsAny<CancellationToken>());
-
-        Assert.Single(followUps);
-    }
-
-    [Fact]
-    public async Task GetFollowUpsByPlanNumber_WithoutBypassCache_ShouldReturnFollowUpsFromCache() {
-        IEnumerable<PCRBFollowUp> followUps = await _pcrbService.GetFollowUpsByPlanNumber(1, false);
-        Assert.Single(followUps);
-    }
-
-    [Fact]
-    public async Task GetFollowUpsByPlanNumber_WithBadResponse_ShouldThrowException() {
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Get),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
+        HttpClient httpClient = new HttpClient(handlerMock.Object) {
             BaseAddress = new Uri("https://localhost:5000")
         };
 
         _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
 
-        await Assert.ThrowsAsync<Exception>(() => _pcrbService.GetFollowUpsByPlanNumber(1, true));
+        Exception exception = await Assert.ThrowsAsync<Exception>(() => _pcrbService.NotifyApprover(notification));
+        Assert.Equal("Unable to notify PCRB approver, because Bad Request", exception.Message);
     }
 
     [Fact]
-    public async Task UpdateFollowUp_WithValidParams_ShouldCallHttpPut() {
-        PCRBFollowUp followUp = new PCRBFollowUp {
-            ID = 1,
-            PlanNumber = 123,
-            Step = 1,
-            FollowUpDate = DateTime.Now,
-            Comments = "Test"
-        };
-
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(SUCCESSFUL_RESPONSE)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
-        };
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
-
-        await _pcrbService.UpdateFollowUp(followUp);
-
-        mockHttpMessageHandler.Protected().Verify(
-            "SendAsync",
-            Times.Once(),
-            ItExpr.Is<HttpRequestMessage>(
-                req =>
-                    req.Method == HttpMethod.Put &&
-                    req.RequestUri != null &&
-                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp")),
-            ItExpr.IsAny<CancellationToken>());
+    public async Task NotifyApprover_ShouldThrowException_WhenNotificationIsNull() {
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.NotifyApprover(null));
     }
 
     [Fact]
-    public async Task UpdateFollowUp_WithNullParam_ShouldThrowException() {
-        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.UpdateFollowUp(null));
+    public async Task NotifyApprover_ShouldThrowException_WhenPCRBIsNull() {
+        PCRBNotification notification = new PCRBNotification {
+            Message = "Test Message",
+            PCRB = null,
+            Approval = _mockApproval.Object
+        };
+
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.NotifyApprover(notification));
     }
 
     [Fact]
-    public async Task UpdateFollowUp_WithBadResponse_ShouldThrowException() {
-        PCRBFollowUp followUp = new PCRBFollowUp {
-            ID = 1,
-            PlanNumber = 123,
-            Step = 1,
-            FollowUpDate = DateTime.Now,
-            Comments = "Test"
+    public async Task NotifyApprover_ShouldThrowException_WhenApprovalIsNull() {
+        PCRBNotification notification = new PCRBNotification {
+            Message = "Test Message",
+            PCRB = _mockPCRB.Object,
+            Approval = null
         };
 
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Put),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
-        };
-
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
-
-        await Assert.ThrowsAsync<Exception>(() => _pcrbService.UpdateFollowUp(followUp));
+        await Assert.ThrowsAsync<ArgumentNullException>(() => _pcrbService.NotifyApprover(notification));
     }
 
     [Fact]
-    public async Task DeleteFollowUp_WithValidParams_ShouldCallHttpDelete() {
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(SUCCESSFUL_RESPONSE)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
-        };
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
-
-        await _pcrbService.DeleteFollowUp(1);
-
-        mockHttpMessageHandler.Protected().Verify(
-            "SendAsync",
-            Times.Once(),
-            ItExpr.Is<HttpRequestMessage>(
-                req =>
-                    req.Method == HttpMethod.Delete &&
-                    req.RequestUri != null &&
-                    req.RequestUri.AbsoluteUri.Equals("https://localhost:5000/pcrb/followUp?id=1")),
-            ItExpr.IsAny<CancellationToken>());
-    }
-
-    [Fact]
-    public async Task DeleteFollowUp_WithBadId_ShouldThrowException() {
-        await Assert.ThrowsAsync<ArgumentException>(() => _pcrbService.DeleteFollowUp(0));
-    }
-
-    [Fact]
-    public async Task DeleteFollowUp_WithBadResponse_ShouldThrowException() {
-        var mockHttpMessageHandler = new Mock<HttpMessageHandler>();
-
-        mockHttpMessageHandler.Protected()
-            .Setup<Task<HttpResponseMessage>>(
-                "SendAsync",
-                ItExpr.Is<HttpRequestMessage>(_ => _.Method == HttpMethod.Delete),
-                ItExpr.IsAny<CancellationToken>())
-            .ReturnsAsync(UNSUCCESSFUL_RESPONSE)
-            .Verifiable();
-
-        var httpClient = new HttpClient(mockHttpMessageHandler.Object) {
-            BaseAddress = new Uri("https://localhost:5000")
+    public async Task NotifyApprover_ShouldThrowException_WhenMessageIsNullOrEmpty() {
+        PCRBNotification notification = new PCRBNotification {
+            Message = null,
+            PCRB = _mockPCRB.Object,
+            Approval = _mockApproval.Object
         };
 
-        _mockHttpClientFactory.Setup(_ => _.CreateClient(It.IsAny<string>())).Returns(httpClient);
+        await Assert.ThrowsAsync<ArgumentException>(() => _pcrbService.NotifyApprover(notification));
 
-        await Assert.ThrowsAsync<Exception>(() => _pcrbService.DeleteFollowUp(1));
+        notification.Message = string.Empty;
+        await Assert.ThrowsAsync<ArgumentException>(() => _pcrbService.NotifyApprover(notification));
     }
 }