112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
package handler
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/http/httptest"
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"testing"
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)
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// TestHealthHandler tests the successful GET request to the /health endpoint.
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func TestHealthHandler(t *testing.T) {
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req, err := http.NewRequest(http.MethodGet, "/health", nil)
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if err != nil {
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t.Fatalf("Failed to create request: %v", err)
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}
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rr := httptest.NewRecorder()
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HealthHandler(rr, req)
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expContentType := "application/json"
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expStatus := "ok"
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expService := "beckn-adapter"
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if status := rr.Code; status != http.StatusOK {
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t.Fatalf("HealthHandler returned wrong status code: got %v want %v",
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status, http.StatusOK)
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}
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if contentType := rr.Header().Get("Content-Type"); contentType != expContentType {
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t.Errorf("HealthHandler returned wrong Content-Type: got %v want %v",
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contentType, expContentType)
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}
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var response healthCheckResponse
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err = json.NewDecoder(rr.Body).Decode(&response)
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if err != nil {
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t.Fatalf("Failed to decode response body: %v", err)
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}
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if response.Status != expStatus {
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t.Errorf("HealthHandler returned wrong status in JSON: got %v want %v",
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response.Status, expStatus)
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}
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if response.Service != expService {
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t.Errorf("HealthHandler returned wrong service in JSON: got %v want %v",
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response.Service, expService)
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}
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}
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// mockResponseWriter is a custom http.ResponseWriter that can simulate an error on Write.
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type mockResponseWriter struct {
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httptest.ResponseRecorder
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writeFail bool
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}
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func (m *mockResponseWriter) Write(p []byte) (n int, err error) {
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if m.writeFail {
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m.writeFail = false
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return 0, fmt.Errorf("simulated write error")
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}
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return m.ResponseRecorder.Write(p)
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}
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// TestHealthHandlerErrors tests error scenarios for the HealthHandler.
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func TestHealthHandlerErrors(t *testing.T) {
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tests := []struct {
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name string
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method string
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recorder *mockResponseWriter
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expStatus int
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expBody string
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}{
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{
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name: "Method Not Allowed",
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method: http.MethodPost,
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recorder: &mockResponseWriter{
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ResponseRecorder: *httptest.NewRecorder(),
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},
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expStatus: http.StatusMethodNotAllowed,
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expBody: "Method not allowed\n",
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},
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{
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name: "JSON Encoding Error",
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method: http.MethodGet,
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recorder: &mockResponseWriter{
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ResponseRecorder: *httptest.NewRecorder(),
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writeFail: true,
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},
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expStatus: http.StatusInternalServerError,
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expBody: "Error encoding response\n",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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req, err := http.NewRequest(tt.method, "/health", nil)
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if err != nil {
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t.Fatalf("Failed to create request for %s: %v", tt.name, err)
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}
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HealthHandler(tt.recorder, req)
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if status := tt.recorder.Code; status != tt.expStatus {
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t.Errorf("handler returned wrong status code: got %v want %v", status, tt.expStatus)
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}
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if body := tt.recorder.Body.String(); body != tt.expBody {
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t.Errorf("handler returned unexpected body: got %q want %q", body, tt.expBody)
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}
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})
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}
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} |