tsk-18: Create service user (#22)

Closes #18

Reviewed-on: phoenix/textsender-auth#22
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

internal/handler/service_test.go

@@ -0,0 +1,33 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"git.kundeng.us/phoenix/textsender-auth/internal/handler/endpoint"
+	"git.kundeng.us/phoenix/textsender-auth/internal/store/mock"
+)
+
+func TestCreateServiceUserWithMock(t *testing.T) {
+	mockStore := mock.NewMockServiceUserStore()
+	handler := NewServiceHandler(mockStore)
+
+	testService := ServiceCreationRequest{Username: "swoon", Passphrase: "ewrewr329n12y3x2!2"}
+	jsonValue, err := json.Marshal(testService)
+	assert.NoError(t, err, "Error marshaling request")
+
+	req, _ := http.NewRequest("POST", endpoint.CreateServiceUser, strings.NewReader(string(jsonValue)))
+	rr := httptest.NewRecorder()
+
+	handler.Register(rr, req)
+	assert.Equal(t, http.StatusCreated, rr.Code)
+
+	var response ServiceCreationResponse
+	err = json.Unmarshal(rr.Body.Bytes(), &response)
+	assert.NoError(t, err)
+}