Hypert - HTTP API Testing Made Easy

Hypert is an open-source Go library that simplifies testing of HTTP API clients. It provides a convenient way to record and replay HTTP interactions, making it easy to create reliable and maintainable tests for your API clients.

Features

• Record and replay HTTP interactions
• Request sanitization to remove sensitive information
• Request validation to ensure the integrity of recorded requests
• Seamless integration with Go's http.Client
• Extensible and configurable options

Getting Started

1. Install Hypert:

go get github.com/areknoster/hypert

2. Use hypert.TestClient to create an http.Client instance for testing:

func TestMyAPI(t *testing.T) {
	httpClient := hypert.TestClient(t, true) // true to record real requests
	// Use the client to make API requests. 
	// The requests and responses would be stored in ./testdata/TestMyAPI
	myAPI := NewMyAPI(httpClient, os.GetEnv("API_SECRET")) 
	// Make an API request with your adapter.
	// use static arguments, so that validation against recorded requests can happen
	stuff, err := myAPI.GetStuff(time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC)) 
	if err != nil {
		t.Fatalf("failed to get stuff: %v", err)
	}
    // Assertions on the actual API response
	if stuff.ID != "ID-FROM-RESP" {
		t.Errorf("stuff ")
	}
}

After you're done with building and testing your integration, change the mode to replay

func TestMyAPI(t *testing.T) {
    httpClient := hypert.TestClient(t, false) // false to replay stored requests
    // Now client would validate requests against what's stored in ./testdata/TestMyAPI/*.req.http 
    // and load the response from  ./testdata/TestMyAPI/*.resp.http
    myAPI := NewMyAPI(httpClient, os.GetEnv("API_SECRET"))
    // HTTP requests are validated against what was prevously recorded. 
    // This behaviour can be customized using WithRequestValidator option
    stuff, err := myAPI.GetStuff(time.Date(2022, 1, 1, 0, 0, 0, 0, time.UTC)) 
    if err != nil {
        t.Fatalf("failed to get stuff: %v", err)
    }
    // Same assertions that were true on actual API responses should be true for replayed API responses.
	if stuff.ID != "ID-FROM-RESP" {
        t.Errorf("stuff ")
    }
}

Now your tests:

• are deterministic
• are fast
• bring the same confidence as integration tests

Stability

I plan to maintain backward compatibility as much as possible, but breaking changes may occur before the first stable release, v1.0.0 if major issues are discovered.

Examples

Check out the examples directory for sample usage of Hypert in different scenarios.

Contributing

Contributions are welcome! If you find a bug or have a feature request, please open an issue on the GitHub repository. If you'd like to contribute code, please fork the repository and submit a pull request.

License

Hypert is released under the MIT License.

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