Normalize internal/client/*_test.go

* Adjust test style for easy reading, by using literals instead of vars
* Move comparison to the `bytes` domain, instead of `string`
* Simplify testing code by using bytes.Buffer directly
* More consistent naming of variables and dummies (HANDLE_{FOO,BAR,BAD})
* Consistent testing style of gock.IsDone()
* Stick to 80-column

internal/client/route_add_test.go

@@ -21,15 +21,19 @@ func TestSuccessOnCorrectRoute(t *testing.T) {
 		Reply(http.StatusCreated).
 		JSON(map[string]string{})
 
-	// TODO: As per the spec¹, the call should return a JSON body with the info of the new route
-	// We should consider this in the mocked server and in the test
+	// TODO: As per the spec¹, the call should return a JSON body with the info
+	// of the newly created route.  Should we consider this in the mocked server
+	// and in the test?
 	// ¹: https://github.com/BBVA/kapow/tree/master/spec#insert-a-route
-	err := AddRoute("http://localhost", "/hello", "GET", "", "echo Hello World | kapow set /response/body", nil)
+
+	err := AddRoute(
+		"http://localhost",
+		"/hello", "GET", "", "echo Hello World | kapow set /response/body", nil)
 	if err != nil {
 		t.Errorf("Unexpected error: %s", err)
 	}
 
-	if gock.IsDone() == false {
+	if !gock.IsDone() {
 		t.Error("Expected endpoint call not made")
 	}
 }