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diff --git a/main_test.go b/main_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..1e563ffd4089ee6081746c6b315e3f52ec568214
--- /dev/null
+++ b/main_test.go
@@ -0,0 +1,398 @@
+package main
+
+import (
+ "bytes"
+ "crypto/ed25519"
+ "crypto/x509"
+ "encoding/json"
+ "encoding/pem"
+ "io"
+ "net/http"
+ "net/http/httptest"
+ "testing"
+
+ "github.com/alecthomas/assert/v2"
+ "github.com/yaronf/httpsign"
+)
+
+func generateTestKeys(t *testing.T) (ed25519.PublicKey, ed25519.PrivateKey) {
+ t.Helper()
+
+ pub, priv, err := ed25519.GenerateKey(nil)
+ assert.NoError(t, err)
+
+ return pub, priv
+}
+
+func encodePEMPublicKey(t *testing.T, pub ed25519.PublicKey) string {
+ t.Helper()
+
+ b, err := x509.MarshalPKIXPublicKey(pub)
+ assert.NoError(t, err)
+
+ pemBlock := &pem.Block{
+ Type: "PUBLIC KEY",
+ Bytes: b,
+ }
+
+ return string(pem.EncodeToMemory(pemBlock))
+}
+
+func signRequest(t *testing.T, req *http.Request, priv ed25519.PrivateKey, body []byte) {
+ t.Helper()
+
+ signer, err := httpsign.NewEd25519Signer(priv, httpsign.NewSignConfig(), httpsign.Headers("@request-target", "content-digest"))
+ assert.NoError(t, err)
+
+ nop := io.NopCloser(bytes.NewReader(body))
+ digest, err := httpsign.GenerateContentDigestHeader(&nop, []string{httpsign.DigestSha256})
+ assert.NoError(t, err)
+ req.Header.Set("Content-Digest", digest)
+
+ signatureInput, signature, err := httpsign.SignRequest(magicKey, *signer, req)
+ assert.NoError(t, err)
+ req.Header.Set("Signature-Input", signatureInput)
+ req.Header.Set("Signature", signature)
+}
+
+func TestPublicKey(t *testing.T) {
+ tests := []struct {
+ name string
+ input string
+ wantErr bool
+ }{
+ {
+ name: "valid ed25519 public key",
+ input: func() string {
+ pub, _ := generateTestKeys(t)
+ return encodePEMPublicKey(t, pub)
+ }(),
+ wantErr: false,
+ },
+ {
+ name: "empty string",
+ input: "",
+ wantErr: true,
+ },
+ {
+ name: "invalid PEM",
+ input: "not a valid pem",
+ wantErr: true,
+ },
+ }
+
+ for _, tt := range tests {
+ t.Run(tt.name, func(t *testing.T) {
+ key, err := publicKey(tt.input)
+ if tt.wantErr {
+ assert.Error(t, err)
+ assert.Zero(t, key)
+ } else {
+ assert.NoError(t, err)
+ assert.NotZero(t, key)
+ }
+ })
+ }
+}
+
+func TestGetRoot(t *testing.T) {
+ pub, _ := generateTestKeys(t)
+ handler := mux(pub)
+
+ req := httptest.NewRequest(http.MethodGet, "/", nil)
+ w := httptest.NewRecorder()
+
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusOK, w.Code)
+ assert.Equal(t, "send me some jsonnet", w.Body.String())
+}
+
+func TestPostRootWithoutSignature(t *testing.T) {
+ pub, _ := generateTestKeys(t)
+ handler := mux(pub)
+
+ reqBody := Request{
+ Configs: []Config{
+ {
+ Name: "test.yaml",
+ Data: "key: value",
+ },
+ },
+ }
+ body, err := json.Marshal(reqBody)
+ assert.NoError(t, err)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ w := httptest.NewRecorder()
+
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusUnauthorized, w.Code)
+
+ var resp map[string]string
+ err = json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, "Failed to verify request", resp["error"])
+}
+
+func TestPostRootWithInvalidJSON(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+ handler := mux(pub)
+
+ body := []byte(`{invalid json}`)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ signRequest(t, req, priv, body)
+
+ w := httptest.NewRecorder()
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusBadRequest, w.Code)
+
+ var resp map[string]string
+ err := json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, "could not decode JSON", resp["error"])
+}
+
+func TestPostYAMLPassthrough(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+ handler := mux(pub)
+
+ reqBody := Request{
+ Configs: []Config{
+ {
+ Name: "test.yaml",
+ Data: "key: value\nnumber: 42",
+ },
+ },
+ }
+ body, err := json.Marshal(reqBody)
+ assert.NoError(t, err)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ signRequest(t, req, priv, body)
+
+ w := httptest.NewRecorder()
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusOK, w.Code)
+
+ var resp Request
+ err = json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, 1, len(resp.Configs))
+ assert.Equal(t, "test.yaml", resp.Configs[0].Name)
+ assert.Equal(t, "key: value\nnumber: 42", resp.Configs[0].Data)
+}
+
+func TestPostJsonnetProcessing(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+ handler := mux(pub)
+
+ reqBody := Request{
+ Configs: []Config{
+ {
+ Name: "test.jsonnet",
+ Data: `{"key": "value", "number": 42}`,
+ },
+ },
+ }
+ body, err := json.Marshal(reqBody)
+ assert.NoError(t, err)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ signRequest(t, req, priv, body)
+
+ w := httptest.NewRecorder()
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusOK, w.Code)
+
+ var resp Request
+ err = json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, 1, len(resp.Configs))
+ assert.Equal(t, "test.jsonnet", resp.Configs[0].Name)
+ assert.Contains(t, resp.Configs[0].Data, "key: value")
+ assert.Contains(t, resp.Configs[0].Data, "number: 42")
+}
+
+func TestPostMixedConfigs(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+ handler := mux(pub)
+
+ reqBody := Request{
+ Configs: []Config{
+ {
+ Name: "first.yaml",
+ Data: "plain: yaml",
+ },
+ {
+ Name: "second.jsonnet",
+ Data: `{"from": "jsonnet"}`,
+ },
+ {
+ Name: "third.yaml",
+ Data: "another: yaml",
+ },
+ },
+ }
+ body, err := json.Marshal(reqBody)
+ assert.NoError(t, err)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ signRequest(t, req, priv, body)
+
+ w := httptest.NewRecorder()
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusOK, w.Code)
+
+ var resp Request
+ err = json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, 3, len(resp.Configs))
+
+ assert.Equal(t, "first.yaml", resp.Configs[0].Name)
+ assert.Equal(t, "plain: yaml", resp.Configs[0].Data)
+
+ assert.Equal(t, "second.jsonnet", resp.Configs[1].Name)
+ assert.Contains(t, resp.Configs[1].Data, "from: jsonnet")
+
+ assert.Equal(t, "third.yaml", resp.Configs[2].Name)
+ assert.Equal(t, "another: yaml", resp.Configs[2].Data)
+}
+
+func TestPostInvalidJsonnet(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+ handler := mux(pub)
+
+ reqBody := Request{
+ Configs: []Config{
+ {
+ Name: "good.yaml",
+ Data: "valid: yaml",
+ },
+ {
+ Name: "bad.jsonnet",
+ Data: `{this is not valid jsonnet`,
+ },
+ {
+ Name: "also-good.yaml",
+ Data: "also: valid",
+ },
+ },
+ }
+ body, err := json.Marshal(reqBody)
+ assert.NoError(t, err)
+
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+ req.Header.Set("Content-Type", "application/json")
+ signRequest(t, req, priv, body)
+
+ w := httptest.NewRecorder()
+ handler.ServeHTTP(w, req)
+
+ assert.Equal(t, http.StatusOK, w.Code)
+
+ var resp Request
+ err = json.NewDecoder(w.Body).Decode(&resp)
+ assert.NoError(t, err)
+ assert.Equal(t, 2, len(resp.Configs))
+ assert.Equal(t, "good.yaml", resp.Configs[0].Name)
+ assert.Equal(t, "also-good.yaml", resp.Configs[1].Name)
+}
+
+func TestVerify(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+
+ tests := []struct {
+ name string
+ signReq bool
+ wantErr bool
+ }{
+ {
+ name: "valid signature",
+ signReq: true,
+ wantErr: false,
+ },
+ {
+ name: "no signature",
+ signReq: false,
+ wantErr: true,
+ },
+ }
+
+ for _, tt := range tests {
+ t.Run(tt.name, func(t *testing.T) {
+ body := []byte(`{"test": "data"}`)
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+
+ if tt.signReq {
+ signRequest(t, req, priv, body)
+ }
+
+ err := verify(pub, req)
+ if tt.wantErr {
+ assert.Error(t, err)
+ } else {
+ assert.NoError(t, err)
+ }
+ })
+ }
+}
+
+func TestVerifyMiddleware(t *testing.T) {
+ pub, priv := generateTestKeys(t)
+
+ okHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ w.WriteHeader(http.StatusOK)
+ w.Write([]byte("success"))
+ })
+
+ wrappedHandler := verifyMiddleware(pub)(okHandler)
+
+ tests := []struct {
+ name string
+ signRequest bool
+ expectedStatus int
+ expectedBody string
+ }{
+ {
+ name: "valid signature allows request through",
+ signRequest: true,
+ expectedStatus: http.StatusOK,
+ expectedBody: "success",
+ },
+ {
+ name: "missing signature blocks request",
+ signRequest: false,
+ expectedStatus: http.StatusUnauthorized,
+ expectedBody: `{"error":"Failed to verify request"}`,
+ },
+ }
+
+ for _, tt := range tests {
+ t.Run(tt.name, func(t *testing.T) {
+ body := []byte(`{"test": "data"}`)
+ req := httptest.NewRequest(http.MethodPost, "/", bytes.NewReader(body))
+
+ if tt.signRequest {
+ signRequest(t, req, priv, body)
+ }
+
+ w := httptest.NewRecorder()
+ wrappedHandler.ServeHTTP(w, req)
+
+ assert.Equal(t, tt.expectedStatus, w.Code)
+ assert.Contains(t, w.Body.String(), tt.expectedBody)
+ })
+ }
+}
|