build: make ci testing conditional on engines field in package.json, …

…move configs to Node 12 (#1418)

* build: make ci testing conditional on engines field in package.json, move configs to Node 12

Co-authored-by: Benjamin E. Coe <bencoe@google.com>

synthtool/gcp/templates/node_library/.github/workflows/ci.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [10, 12, 14, 16]
+        node: [{{metadata['engine'] | int}}, {{metadata['engine'] | int+2}}, {{metadata['engine'] | int+4}}]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3

synthtool/languages/node.py

@@ -24,7 +24,7 @@
 import logging
 import shutil
 
-_REQUIRED_FIELDS = ["name", "repository"]
+_REQUIRED_FIELDS = ["name", "repository", "engines"]
 _TOOLS_DIRECTORY = "/synthtool"
 
 
@@ -48,6 +48,7 @@ def read_metadata():
         data["repository"] = f'{repo["owner"]}/{repo["name"]}'
         data["repository_name"] = repo["name"]
         data["lib_install_cmd"] = f'npm install {data["name"]}'
+        data["engine"] = re.search(r"([0-9][0-9])", data["engines"]["node"]).group()
 
         return data
 

tests/fixtures/node_templates/standard/package.json

@@ -0,0 +1,72 @@
+{
+    "name": "@google-cloud/dlp",
+    "description": "DLP API client for Node.js",
+    "version": "3.1.0",
+    "license": "Apache-2.0",
+    "author": "Google Inc",
+    "engines": {
+      "node": ">=10.0.0"
+    },
+    "repository": "googleapis/nodejs-dlp",
+    "main": "build/src/index.js",
+    "files": [
+      "build/protos",
+      "build/src"
+    ],
+    "keywords": [
+      "google apis client",
+      "google api client",
+      "google apis",
+      "google api",
+      "google",
+      "google cloud platform",
+      "google cloud",
+      "cloud",
+      "google dlp",
+      "dlp",
+      "DLP API"
+    ],
+    "scripts": {
+      "test": "c8 mocha build/test",
+      "samples-test": "cd samples/ && npm link ../ && npm install && npm test && cd ../",
+      "system-test": "mocha build/system-test",
+      "docs": "jsdoc -c .jsdoc.js",
+      "lint": "gts check",
+      "fix": "gts fix",
+      "docs-test": "linkinator docs",
+      "clean": "gts clean",
+      "compile": "tsc -p . && cp -r protos build/",
+      "compile-protos": "compileProtos src",
+      "predocs-test": "npm run docs",
+      "prepare": "npm run compile-protos && npm run compile",
+      "prelint": "cd samples; npm link ../; npm install",
+      "precompile": "gts clean",
+      "api-extractor": "api-extractor run --local",
+      "api-documenter": "api-documenter yaml --input-folder=temp"
+    },
+    "dependencies": {
+      "google-gax": "^2.9.2",
+      "protobufjs": "^6.8.0"
+    },
+    "devDependencies": {
+      "@types/mocha": "^8.0.0",
+      "@types/node": "^12.0.0",
+      "@types/sinon": "^9.0.0",
+      "c8": "^7.0.0",
+      "gts": "^2.0.0",
+      "jsdoc": "^3.5.5",
+      "jsdoc-fresh": "^1.0.1",
+      "jsdoc-region-tag": "^1.0.2",
+      "linkinator": "^2.0.0",
+      "mocha": "^8.0.0",
+      "null-loader": "^4.0.0",
+      "pack-n-play": "^1.0.0-2",
+      "sinon": "^10.0.0",
+      "ts-loader": "^8.0.0",
+      "typescript": "^3.8.3",
+      "webpack": "^5.0.0",
+      "webpack-cli": "^4.0.0",
+      "@microsoft/api-documenter": "^7.8.10",
+      "@microsoft/api-extractor": "^7.8.10"
+    }
+  }

tests/test_node.py

@@ -43,6 +43,12 @@ def test_quickstart_metadata_with_snippet():
         assert "samples/quickstart.js" in sample_names
 
 
+def test_metadata_engines_field():
+    with util.chdir(FIXTURES / "node_templates" / "standard"):
+        metadata = node.template_metadata()
+        assert "10" in metadata["engine"]
+
+
 def test_quickstart_metadata_without_snippet():
     with util.chdir(FIXTURES / "node_templates" / "no_quickstart_snippet"):
         metadata = node.template_metadata()