fix linting test

tests/lint/actions_schema_validation.py

@@ -1,4 +1,4 @@
-import os
+from pathlib import Path
 
 import yaml
 
@@ -9,10 +9,11 @@ def test_actions_schema_validation_missing_jobs(self):
     """Missing 'jobs' field should result in failure"""
     new_pipeline = self._make_pipeline_copy()
 
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml")) as fh:
+    awstest_yml_path = Path(new_pipeline) / ".github" / "workflows" / "awstest.yml"
+    with open(awstest_yml_path) as fh:
         awstest_yml = yaml.safe_load(fh)
     awstest_yml.pop("jobs")
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml"), "w") as fh:
+    with open(awstest_yml_path, "w") as fh:
         yaml.dump(awstest_yml, fh)
 
     lint_obj = nf_core.lint.PipelineLint(new_pipeline)
@@ -27,29 +28,31 @@ def test_actions_schema_validation_missing_on(self):
     """Missing 'on' field should result in failure"""
     new_pipeline = self._make_pipeline_copy()
 
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml")) as fh:
+    awstest_yml_path = Path(new_pipeline) / ".github" / "workflows" / "awstest.yml"
+    with open(awstest_yml_path) as fh:
         awstest_yml = yaml.safe_load(fh)
     awstest_yml.pop(True)
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml"), "w") as fh:
+    with open(awstest_yml_path, "w") as fh:
         yaml.dump(awstest_yml, fh)
 
     lint_obj = nf_core.lint.PipelineLint(new_pipeline)
     lint_obj._load()
 
     results = lint_obj.actions_schema_validation()
 
-    assert results["failed"][0] == "Missing 'on' keyword in {}.format(wf)"
+    assert results["failed"][0] == "Missing 'on' keyword in awstest.yml"
     assert "Workflow validation failed for awstest.yml: 'on' is a required property" in results["failed"][1]
 
 
 def test_actions_schema_validation_fails_for_additional_property(self):
     """Missing 'jobs' field should result in failure"""
     new_pipeline = self._make_pipeline_copy()
 
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml")) as fh:
+    awstest_yml_path = Path(new_pipeline) / ".github" / "workflows" / "awstest.yml"
+    with open(awstest_yml_path) as fh:
         awstest_yml = yaml.safe_load(fh)
     awstest_yml["not_jobs"] = awstest_yml["jobs"]
-    with open(os.path.join(new_pipeline, ".github", "workflows", "awstest.yml"), "w") as fh:
+    with open(awstest_yml_path, "w") as fh:
         yaml.dump(awstest_yml, fh)
 
     lint_obj = nf_core.lint.PipelineLint(new_pipeline)