Created ExpiringTECNWorker

FabApprovalWorkerServiceTests/UserServiceTests.cs

@@ -443,4 +443,33 @@ internal class UserServiceTests {
 
         Assert.False(actual);
     }
+
+    [Test]
+    public void GetUserEmailWithInvalidUserIdShouldThrowException() {
+        _userService = new UserService(MOCK_LOGGER, _mockDalService.Object);
+
+        Assert.ThrowsAsync<ArgumentException>(async Task() => await _userService.GetUserEmail(-1));
+    }
+
+    [Test]
+    public void GetUserEmailWithDbErrorShouldThrowException() {
+        _mockDalService.Setup(d => d.QueryAsync<string>(It.IsAny<string>())).Throws(new Exception());
+
+        _userService = new UserService(MOCK_LOGGER, _mockDalService.Object);
+
+        Assert.ThrowsAsync<Exception>(async Task() => await _userService.GetUserEmail(3));
+    }
+
+    [Test]
+    public async Task GetUserEmailShouldReturnExpectedEmail() {
+        IEnumerable<string> emailsFromDb = new List<string>() { "user@email.com" };
+
+        _mockDalService.Setup(d => d.QueryAsync<string>(It.IsAny<string>())).Returns(Task.FromResult(emailsFromDb));
+
+        _userService = new UserService(MOCK_LOGGER, _mockDalService.Object);
+
+        string actualEmail = await _userService.GetUserEmail(5);
+
+        Assert.That(actualEmail, Is.EqualTo(emailsFromDb.First()));
+    }
 }