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| 1 | +package auth |
| 2 | + |
| 3 | +import ( |
| 4 | + "net/http" |
| 5 | + "net/http/cookiejar" |
| 6 | + "net/http/httptest" |
| 7 | + "testing" |
| 8 | + |
| 9 | + "github.com/gin-contrib/sessions" |
| 10 | + "github.com/gin-contrib/sessions/memstore" |
| 11 | + "github.com/gin-gonic/gin" |
| 12 | + "github.com/stretchr/testify/require" |
| 13 | + "go.uber.org/mock/gomock" |
| 14 | + "golang.org/x/oauth2" |
| 15 | +) |
| 16 | + |
| 17 | +func setupTestRouter(authRouter *AuthRouter) *gin.Engine { |
| 18 | + gin.SetMode(gin.TestMode) |
| 19 | + router := gin.New() |
| 20 | + |
| 21 | + // Setup session middleware |
| 22 | + store := memstore.NewStore([]byte("test-secret")) |
| 23 | + router.Use(sessions.Sessions("session", store)) |
| 24 | + |
| 25 | + // Setup dummy protected route |
| 26 | + router.GET("/", authRouter.RequireAuth(), func(c *gin.Context) { |
| 27 | + c.String(http.StatusOK, "authenticated") |
| 28 | + }) |
| 29 | + |
| 30 | + // Setup authentication routes |
| 31 | + authRouter.SetupRoutes(router) |
| 32 | + |
| 33 | + return router |
| 34 | +} |
| 35 | + |
| 36 | +func setupClient() *http.Client { |
| 37 | + jar, _ := cookiejar.New(nil) |
| 38 | + return &http.Client{ |
| 39 | + Jar: jar, |
| 40 | + CheckRedirect: func(req *http.Request, via []*http.Request) error { |
| 41 | + return http.ErrUseLastResponse |
| 42 | + }, |
| 43 | + } |
| 44 | +} |
| 45 | + |
| 46 | +func TestAuthenticationFlow(t *testing.T) { |
| 47 | + t.Run("Unauthenticated access should redirect to login", func(t *testing.T) { |
| 48 | + ctrl := gomock.NewController(t) |
| 49 | + defer ctrl.Finish() |
| 50 | + |
| 51 | + // Create mock provider |
| 52 | + mockProvider := NewMockProvider(ctrl) |
| 53 | + mockProvider.EXPECT().Name().Return("test").AnyTimes() |
| 54 | + mockProvider.EXPECT().AuthURL().Return("/.auth/test").AnyTimes() |
| 55 | + mockProvider.EXPECT().RedirectURL().Return("/.auth/test/callback").AnyTimes() |
| 56 | + |
| 57 | + // Create AuthRouter |
| 58 | + authRouter, err := NewAuthRouter(nil, mockProvider) |
| 59 | + require.NoError(t, err) |
| 60 | + |
| 61 | + router := setupTestRouter(authRouter) |
| 62 | + server := httptest.NewServer(router) |
| 63 | + defer server.Close() |
| 64 | + |
| 65 | + client := setupClient() |
| 66 | + |
| 67 | + resp, err := client.Get(server.URL + "/") |
| 68 | + require.NoError(t, err) |
| 69 | + defer resp.Body.Close() |
| 70 | + |
| 71 | + require.Equal(t, http.StatusFound, resp.StatusCode) |
| 72 | + |
| 73 | + location := resp.Header.Get("Location") |
| 74 | + require.Equal(t, LoginEndpoint, location) |
| 75 | + }) |
| 76 | + |
| 77 | + t.Run("OAuth authentication flow", func(t *testing.T) { |
| 78 | + ctrl := gomock.NewController(t) |
| 79 | + defer ctrl.Finish() |
| 80 | + |
| 81 | + // Create mock provider |
| 82 | + mockProvider := NewMockProvider(ctrl) |
| 83 | + mockProvider.EXPECT().Name().Return("test").AnyTimes() |
| 84 | + mockProvider.EXPECT().AuthURL().Return("/.auth/test").AnyTimes() |
| 85 | + mockProvider.EXPECT().RedirectURL().Return("/.auth/test/callback").AnyTimes() |
| 86 | + |
| 87 | + // Create AuthRouter |
| 88 | + authRouter, err := NewAuthRouter(nil, mockProvider) |
| 89 | + require.NoError(t, err) |
| 90 | + |
| 91 | + router := setupTestRouter(authRouter) |
| 92 | + server := httptest.NewServer(router) |
| 93 | + defer server.Close() |
| 94 | + |
| 95 | + client := setupClient() |
| 96 | + |
| 97 | + // Step 1: Access unauthenticated route first to set redirectURL in session |
| 98 | + resp, err := client.Get(server.URL + "/") |
| 99 | + require.NoError(t, err) |
| 100 | + resp.Body.Close() |
| 101 | + |
| 102 | + // Verify redirect to login page |
| 103 | + require.Equal(t, http.StatusFound, resp.StatusCode) |
| 104 | + |
| 105 | + // Step 2: Start authentication |
| 106 | + mockProvider.EXPECT().AuthCodeURL(gomock.Any(), gomock.Any()).Return("https://example.com/oauth", nil) |
| 107 | + |
| 108 | + resp, err = client.Get(server.URL + "/.auth/test") |
| 109 | + require.NoError(t, err) |
| 110 | + resp.Body.Close() |
| 111 | + |
| 112 | + require.Equal(t, http.StatusFound, resp.StatusCode) |
| 113 | + |
| 114 | + location := resp.Header.Get("Location") |
| 115 | + require.Equal(t, "https://example.com/oauth", location) |
| 116 | + |
| 117 | + // Step 3: Handle callback |
| 118 | + mockToken := &oauth2.Token{AccessToken: "test-token"} |
| 119 | + mockProvider.EXPECT().Exchange(gomock.Any(), gomock.Any()).Return(mockToken, nil) |
| 120 | + mockProvider.EXPECT().GetUserID(gomock.Any(), mockToken).Return("test-user", nil) |
| 121 | + |
| 122 | + resp, err = client.Get(server.URL + "/.auth/test/callback") |
| 123 | + require.NoError(t, err) |
| 124 | + resp.Body.Close() |
| 125 | + |
| 126 | + require.Equal(t, http.StatusFound, resp.StatusCode) |
| 127 | + |
| 128 | + // Verify redirect to root |
| 129 | + location = resp.Header.Get("Location") |
| 130 | + require.Equal(t, "/", location) |
| 131 | + |
| 132 | + // Step 4: Access after authentication |
| 133 | + mockProvider.EXPECT().Authorization("test-user").Return(true, nil) |
| 134 | + |
| 135 | + resp, err = client.Get(server.URL + "/") |
| 136 | + if err != nil { |
| 137 | + t.Fatalf("Request failed: %v", err) |
| 138 | + } |
| 139 | + defer resp.Body.Close() |
| 140 | + |
| 141 | + require.Equal(t, http.StatusOK, resp.StatusCode) |
| 142 | + }) |
| 143 | + |
| 144 | + t.Run("Unauthorized user should be blocked", func(t *testing.T) { |
| 145 | + ctrl := gomock.NewController(t) |
| 146 | + defer ctrl.Finish() |
| 147 | + |
| 148 | + // Create mock provider |
| 149 | + mockProvider := NewMockProvider(ctrl) |
| 150 | + mockProvider.EXPECT().Name().Return("test").AnyTimes() |
| 151 | + mockProvider.EXPECT().AuthURL().Return("/.auth/test").AnyTimes() |
| 152 | + mockProvider.EXPECT().RedirectURL().Return("/.auth/test/callback").AnyTimes() |
| 153 | + |
| 154 | + // Create AuthRouter |
| 155 | + authRouter, err := NewAuthRouter(nil, mockProvider) |
| 156 | + require.NoError(t, err) |
| 157 | + |
| 158 | + router := setupTestRouter(authRouter) |
| 159 | + server := httptest.NewServer(router) |
| 160 | + defer server.Close() |
| 161 | + |
| 162 | + client := setupClient() |
| 163 | + |
| 164 | + // Step 1: Access unauthenticated route first |
| 165 | + resp, err := client.Get(server.URL + "/") |
| 166 | + require.NoError(t, err) |
| 167 | + resp.Body.Close() |
| 168 | + |
| 169 | + // Step 2: Start authentication |
| 170 | + mockProvider.EXPECT().AuthCodeURL(gomock.Any(), gomock.Any()).Return("https://example.com/oauth", nil) |
| 171 | + |
| 172 | + resp, err = client.Get(server.URL + "/.auth/test") |
| 173 | + require.NoError(t, err) |
| 174 | + resp.Body.Close() |
| 175 | + |
| 176 | + // Step 3: Complete authentication |
| 177 | + mockToken := &oauth2.Token{AccessToken: "test-token"} |
| 178 | + mockProvider.EXPECT().Exchange(gomock.Any(), gomock.Any()).Return(mockToken, nil) |
| 179 | + mockProvider.EXPECT().GetUserID(gomock.Any(), mockToken).Return("unauthorized-user", nil) |
| 180 | + |
| 181 | + resp, err = client.Get(server.URL + "/.auth/test/callback") |
| 182 | + require.NoError(t, err) |
| 183 | + resp.Body.Close() |
| 184 | + |
| 185 | + // Step 4: Test access when authorization fails |
| 186 | + mockProvider.EXPECT().Authorization("unauthorized-user").Return(false, nil) |
| 187 | + |
| 188 | + resp, err = client.Get(server.URL + "/") |
| 189 | + if err != nil { |
| 190 | + t.Fatalf("Request failed: %v", err) |
| 191 | + } |
| 192 | + defer resp.Body.Close() |
| 193 | + |
| 194 | + require.Equal(t, http.StatusForbidden, resp.StatusCode) |
| 195 | + }) |
| 196 | +} |
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