Add some api integration tests (#18872)

depends on #18871

Added some api integration tests to help testing of #18798.

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

tests/integration/api_user_info_test.go

@@ -0,0 +1,51 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package integration
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAPIUserInfo(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := "user1"
+	user2 := "user31"
+
+	session := loginUser(t, user)
+	token := getTokenForLoggedInUser(t, session)
+
+	t.Run("GetInfo", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+
+		req := NewRequest(t, "GET", fmt.Sprintf("/api/v1/users/%s?token=%s", user2, token))
+		resp := MakeRequest(t, req, http.StatusOK)
+
+		var u api.User
+		DecodeJSON(t, resp, &u)
+		assert.Equal(t, user2, u.UserName)
+
+		req = NewRequest(t, "GET", fmt.Sprintf("/api/v1/users/%s", user2))
+		MakeRequest(t, req, http.StatusNotFound)
+	})
+
+	t.Run("GetAuthenticatedUser", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+
+		req := NewRequest(t, "GET", fmt.Sprintf("/api/v1/user?token=%s", token))
+		resp := MakeRequest(t, req, http.StatusOK)
+
+		var u api.User
+		DecodeJSON(t, resp, &u)
+		assert.Equal(t, user, u.UserName)
+	})
+}