add check to noxfile template for constraints files (#5611)

* add check to noxfile template for constraints files

* ignore constraints files in header check

* add constraints check to renovate, remove old ignore

Author: leahecole

.github/header-checker-lint.yml

@@ -1,6 +1,6 @@
 {"allowedCopyrightHolders": ["Google LLC", "Google, Inc"],
  "allowedLicenses": ["Apache-2.0", "MIT", "BSD-3"],
- "ignoreFiles": ["**/requirements.txt", "**/requirements-test.txt", "**/requirements-composer.txt", "**/__init__.py"],
+ "ignoreFiles": ["**/requirements.txt", "**/requirements-test.txt", "**/requirements-composer.txt", "**/__init__.py", "**/constraints.txt", "**/constraints-test.txt"],
  "sourceFileExtensions": [
  	"ts",
  	"js",

noxfile-template.py

@@ -175,10 +175,14 @@ def blacken(session: nox.sessions.Session) -> None:
 def _session_tests(session: nox.sessions.Session, post_install: Callable = None) -> None:
     """Runs py.test for a particular project."""
     if os.path.exists("requirements.txt"):
-        session.install("-r", "requirements.txt")
+      if os.path.exists("constraints.txt"):
+        session.install("-r", "requirements.txt", "-c", "constraints.txt")
+      session.install("-r", "requirements.txt")
 
     if os.path.exists("requirements-test.txt"):
-        session.install("-r", "requirements-test.txt")
+      if os.path.exists("constraints-test.txt"):
+        session.install("-r", "requirements-test.txt", "-c", "constraints-test.txt")
+      session.install("-r", "requirements-test.txt")
 
     if INSTALL_LIBRARY_FROM_SOURCE:
         session.install("-e", _get_repo_root())

renovate.json

@@ -6,9 +6,8 @@
   "rebaseWhen": "never",
   "masterIssue": true,
   "pip_requirements": {
-    "fileMatch": ["requirements-test.txt", "requirements-composer.txt"]
+    "fileMatch": ["requirements-test.txt", "requirements-composer.txt", "constraints.txt", "constraints-test.txt"]
   },
-  "ignoreDeps":["cattrs"],
   "packageRules": [
     {
       "packagePatterns": ["pytest"],