Add Github Action for integration test (#135)

This will replace the old Travis CI presubmits, which appears to have stopped working due to deprecation. Also patching impersonation test.

.github/workflows/integration-test.yml

@@ -0,0 +1,26 @@
+name: Go
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.13
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./integration/...
+

integration/cli_test.go

@@ -516,21 +516,12 @@ func TestServiceAccountImpersonationFlow(t *testing.T) {
 	}
 
 	processOutput := func(output string) string {
-
-		method := "\"method\": \"google.iam.credentials.v1.IAMCredentials.GenerateAccessToken\""
-		service := "\"service\": \"iamcredentials.googleapis.com\""
-
-		mPos := strings.Index(output, method)
-		sPos := strings.Index(output, service)
-
-		// If service appears later than method, revert order to match output
-		if sPos > mPos {
-			output = strings.Replace(output, method, "**MARKER-1**", 1)
-			output = strings.Replace(output, service, method, 1)
-			output = strings.Replace(output, "**MARKER-1**", service, 1)
-		}
-
-		return output
+		//Error details are constantly changing, so we will strip out "error.details" field.
+		var jsonData map[string]interface{}
+		json.Unmarshal([]byte(output), &jsonData) // nolint:errcheck
+		delete(jsonData["error"].(map[string]interface{}), "details")
+		jsonString, _ := json.Marshal(jsonData)
+		return string(jsonString)
 	}
 
 	runTestScenariosWithInputAndProcessedOutput(t, tests, nil, processOutput)

integration/golden/fetch-impersonation.golden

@@ -1,22 +1 @@
-{
-  "error": {
-    "code": 401,
-    "message": "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.",
-    "status": "UNAUTHENTICATED",
-    "details": [
-      {
-        "@type": "type.googleapis.com/google.rpc.DebugInfo",
-        "detail": "Authentication error: 16; Error Details: Credential sent is invalid. Unknown token version 0 for token string: ya29.GltDB_y~"
-      },
-      {
-        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
-        "reason": "ACCESS_TOKEN_TYPE_UNSUPPORTED",
-        "metadata": {
-          "service": "iamcredentials.googleapis.com",
-          "method": "google.iam.credentials.v1.IAMCredentials.GenerateAccessToken"
-        }
-      }
-    ]
-  }
-}
-
+{"error":{"code":401,"message":"Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.","status":"UNAUTHENTICATED"}}