public async Task DeleteAllStubs_ShouldDeleteAllStubs()
    {
        // Arrange
        var client = new HttPlaceholderClient(CreateHttpClient(mock => mock
                                                               .When(HttpMethod.Delete, $"{BaseUrl}ph-api/stubs")
                                                               .Respond(HttpStatusCode.NoContent)));

        // Act / Assert
        await client.DeleteAllStubsAsync();
    }
    public async Task DeleteAllStubs_ExceptionInRequest_ShouldThrowHttPlaceholderClientException()
    {
        // Arrange
        var client = new HttPlaceholderClient(CreateHttpClient(mock => mock
                                                               .When(HttpMethod.Delete, $"{BaseUrl}ph-api/stubs")
                                                               .Respond(HttpStatusCode.BadRequest, "text/plain", "Error occurred!")));

        // Act
        var exception =
            await Assert.ThrowsExceptionAsync <HttPlaceholderClientException>(() =>
                                                                              client.DeleteAllStubsAsync());

        // Assert
        Assert.AreEqual("Status code '400' returned by HttPlaceholder with message 'Error occurred!'",
                        exception.Message);
    }