tsk-8: Create Message endpoint (#15)

Closes #8

Reviewed-on: phoenix/textsender-api#15
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

internal/handler/message_test.go

@@ -0,0 +1,43 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+
+	"git.kundeng.us/phoenix/textsender-api/internal/handler/endpoint"
+)
+
+type CreateMessageRequest struct {
+	Content string    `json:"content"`
+	UserId  uuid.UUID `json:"user_id"`
+}
+
+func TestCreateMessageWithMock(t *testing.T) {
+	mockStore := NewMockMessageStore()
+	handler := NewMessageHandler(mockStore)
+
+	testUserId := uuid.New()
+	testBody := CreateMessageRequest{Content: "Who could tell?", UserId: testUserId}
+	jsonValue, _ := json.Marshal(testBody)
+
+	req, _ := http.NewRequest("POST", endpoint.ADD_MESSAGE, strings.NewReader(string(jsonValue)))
+	rr := httptest.NewRecorder()
+
+	handler.AddMessage(rr, req)
+
+	assert.Equal(t, http.StatusCreated, rr.Code)
+
+	var response AddMessageResponse
+	err := json.Unmarshal(rr.Body.Bytes(), &response)
+	assert.NoError(t, err, "Error Creating message %v", err)
+
+	assert.NotEmpty(t, response.Data, "No Message created")
+
+	assert.NotNil(t, response.Data[0].Id, "Id should not be nil")
+}