client: simplify test with mock-responses

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

client/service_logs_test.go

@@ -1,7 +1,6 @@
 package client
 
 import (
-	"bytes"
 	"context"
 	"errors"
 	"fmt"
@@ -105,10 +104,7 @@ func TestServiceLogs(t *testing.T) {
 					return nil, fmt.Errorf("%s not set in URL query properly. Expected '%s', got %s", key, expected, actual)
 				}
 			}
-			return &http.Response{
-				StatusCode: http.StatusOK,
-				Body:       io.NopCloser(bytes.NewReader([]byte("response"))),
-			}, nil
+			return mockResponse(http.StatusOK, nil, "response")(req)
 		}))
 		assert.NilError(t, err)
 		body, err := client.ServiceLogs(context.Background(), "service_id", logCase.options)