Test (add unit test for expense handler)

api/expense/get/handler_test.go

@@ -0,0 +1,103 @@
+package get
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/labstack/echo/v4"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+// Define a mock service implementing the Service interface
+type MockService struct {
+	mock.Mock
+}
+
+func (m *MockService) GetAll(filter Filter, paginate Paginate) ([]Expense, error) {
+	args := m.Called(filter, paginate)
+	if args.Get(0) == nil {
+		return nil, args.Error(1)
+	}
+	return args.Get(0).([]Expense), args.Error(1)
+}
+
+func TestHandler_GetAll(t *testing.T) {
+	// Arrange
+	e := echo.New()
+
+	mockService := new(MockService)
+	h := NewHandler(mockService)
+
+	tests := []struct {
+		name           string
+		queryParams    map[string]string
+		expectedStatus int
+		expectedBody   string
+		setupMock      func()
+	}{
+		{
+			name: "valid request with all parameters",
+			queryParams: map[string]string{
+				"date":        "2022-01-01",
+				"amount":      "123.45",
+				"category":    "test-category",
+				"itemPerPage": "5",
+				"page":        "2",
+			},
+			expectedStatus: http.StatusOK,
+			expectedBody:   `[{"id":1,"amount":200, "date":null, "category":"category1", "imageUrl":"urlOne", "note":"note", "spenderId":"1"}]`,
+			setupMock: func() {
+				date, _ := time.Parse("2006-01-02", "2022-01-01")
+				amount := float32(123.45)
+				filter := Filter{
+					Date:     &date,
+					Amount:   &amount,
+					Category: "test-category",
+				}
+				pagination := Paginate{
+					ItemPerPage: 5,
+					Page:        2,
+				}
+				mockService.On("GetAll", filter, pagination).Return([]Expense{{ID: 1, Date: nil, Amount: 200, Category: "category1", ImageUrl: "urlOne", Note: "note", SpenderId: "1"}}, nil)
+			},
+		},
+		// {
+		// 	name: "invalid date format",
+		// 	queryParams: map[string]string{
+		// 		"date": "invalid-date",
+		// 	},
+		// 	expectedStatus: http.StatusBadRequest,
+		// 	expectedBody:   `"Invalid date format: parsing time "invalid-date" as "2006-01-02": cannot parse "invalid-date" as "2006"`,
+		// 	setupMock:      func() {},
+		// },
+		// Add more test cases as needed
+	}
+
+	// Act
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.setupMock()
+
+			req := httptest.NewRequest(http.MethodGet, "/", nil)
+			q := req.URL.Query()
+			for k, v := range tt.queryParams {
+				q.Add(k, v)
+			}
+			req.URL.RawQuery = q.Encode()
+
+			rec := httptest.NewRecorder()
+			c := e.NewContext(req, rec)
+
+			// Assert
+			if assert.NoError(t, h.GetAll(c)) {
+				assert.Equal(t, tt.expectedStatus, rec.Code)
+				assert.JSONEq(t, tt.expectedBody, rec.Body.String())
+			}
+
+			mockService.AssertExpectations(t)
+		})
+	}
+}