feat: add tests for controller layer on search repos (#6)

src/controllers/repository_test.go

@@ -0,0 +1,76 @@
+package controllers
+
+import (
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/Scalingo/sclng-backend-test-v1/src/models"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+type mockRepositoryUseCase struct {
+	mock.Mock
+}
+
+func (m *mockRepositoryUseCase) SearchRepositories(query string) (*models.RepositorySearchResponse, error) {
+	args := m.Called(query)
+	return args.Get(0).(*models.RepositorySearchResponse), args.Error(1)
+}
+
+func TestSearchRepositoriesEndpoint(t *testing.T) {
+	tests := map[string]struct {
+		endpoint       string
+		mockCall       func(*mockRepositoryUseCase)
+		expectedStatus int
+	}{
+		"nominal": {
+			endpoint: "/repositories/search?q=golang",
+			mockCall: func(m *mockRepositoryUseCase) {
+				response := &models.RepositorySearchResponse{
+					TotalCount: 1,
+					Items: []models.Repository{
+						{FullName: "scalingo/scalingo-test"},
+					},
+				}
+				m.On("SearchRepositories", "golang").Return(response, nil)
+			},
+			expectedStatus: http.StatusOK,
+		},
+		"usecase error, return error": {
+			endpoint: "/repositories/search?q=golang",
+			mockCall: func(m *mockRepositoryUseCase) {
+				m.On("SearchRepositories", "golang").Return(&models.RepositorySearchResponse{}, errors.New("usecase error"))
+			},
+			expectedStatus: http.StatusInternalServerError,
+		},
+		"missing query, return error": {
+			endpoint:       "/repositories/search",
+			expectedStatus: http.StatusBadRequest,
+		},
+		"empty queryu, return error": {
+			endpoint:       "/repositories/search?q=",
+			expectedStatus: http.StatusBadRequest,
+		},
+	}
+
+	for name, tt := range tests {
+		t.Run(name, func(t *testing.T) {
+			req := httptest.NewRequest(http.MethodGet, tt.endpoint, nil)
+			w := httptest.NewRecorder()
+
+			mockUseCase := new(mockRepositoryUseCase)
+			controller := NewRepositoryController(mockUseCase)
+
+			if tt.mockCall != nil {
+				tt.mockCall(mockUseCase)
+			}
+
+			controller.SearchRepositories(w, req)
+
+			assert.Equal(t, tt.expectedStatus, w.Code)
+		})
+	}
+}