Add test for bad configuration

config/config_test.go

@@ -6,8 +6,8 @@ import (
 	"time"
 )
 
-func TestParseConfigBytes(t *testing.T) {
-	config := parseConfigBytes([]byte(`
+func TestParseAndValidateConfigBytes(t *testing.T) {
+	config, err := parseAndValidateConfigBytes([]byte(`
 services:
   - name: twinnation
     url: https://twinnation.org/actuator/health
@@ -20,6 +20,9 @@ services:
       - "$STATUS != 400"
       - "$STATUS != 500"
 `))
+	if err != nil {
+		t.Error("No error should've been returned")
+	}
 	if len(config.Services) != 2 {
 		t.Error("Should have returned two services")
 	}
@@ -44,14 +47,17 @@ services:
 	}
 }
 
-func TestParseConfigBytesDefault(t *testing.T) {
-	config := parseConfigBytes([]byte(`
+func TestParseAndValidateConfigBytesDefault(t *testing.T) {
+	config, err := parseAndValidateConfigBytes([]byte(`
 services:
   - name: twinnation
     url: https://twinnation.org/actuator/health
     conditions:
       - "$STATUS == 200"
 `))
+	if err != nil {
+		t.Error("No error should've been returned")
+	}
 	if config.Services[0].Url != "https://twinnation.org/actuator/health" {
 		t.Errorf("URL should have been %s", "https://twinnation.org/actuator/health")
 	}
@@ -59,3 +65,19 @@ services:
 		t.Errorf("Interval should have been %s, because it is the default value", 10*time.Second)
 	}
 }
+
+func TestParseAndValidateBadConfigBytes(t *testing.T) {
+	_, err := parseAndValidateConfigBytes([]byte(`
+badconfig:
+  - asdsa: w0w
+    usadasdrl: asdxzczxc	
+    asdas:
+      - soup
+`))
+	if err == nil {
+		t.Error("An error should've been returned")
+	}
+	if err != ErrNoServiceInConfig {
+		t.Error("The error returned should have been of type ErrNoServiceInConfig")
+	}
+}