Refactor skip-if tests to use irrelevant-files

Skip-if has been removed in favor of irrelevant-files and the branch
matchers. This refactors the tests that used to be used for skip-if to
cover irrelevant-files.

There may still be need to cover the other types of matchers.

The 'test_parse_skip_if' has just been removed as it wasn't really
covering anything not also covered by the functional tests.

Change-Id: I3a4080426c4dc680ed656e18f26597e3d1b7d759
Story: 2000773
Task: 3378
diff --git a/tests/fixtures/config/single-tenant/git/layout-irrelevant-files/zuul.yaml b/tests/fixtures/config/single-tenant/git/layout-irrelevant-files/zuul.yaml
new file mode 100644
index 0000000..f243bcc
--- /dev/null
+++ b/tests/fixtures/config/single-tenant/git/layout-irrelevant-files/zuul.yaml
@@ -0,0 +1,27 @@
+- pipeline:
+    name: check
+    manager: independent
+    source:
+      gerrit
+    trigger:
+      gerrit:
+        - event: patchset-created
+    success:
+      gerrit:
+        verified: 1
+    failure:
+      gerrit:
+        verified: -1
+
+
+- job:
+    name: project-test-irrelevant-files
+
+- project:
+    name: org/project
+    check:
+      jobs:
+        - project-test-irrelevant-files:
+            irrelevant-files:
+              - ^README$
+              - ^ignoreme$
diff --git a/tests/fixtures/layout-skip-if.yaml b/tests/fixtures/layout-skip-if.yaml
deleted file mode 100644
index 0cfb445..0000000
--- a/tests/fixtures/layout-skip-if.yaml
+++ /dev/null
@@ -1,29 +0,0 @@
-pipelines:
-  - name: check
-    manager: IndependentPipelineManager
-    trigger:
-      gerrit:
-        - event: patchset-created
-    success:
-      gerrit:
-        verified: 1
-    failure:
-      gerrit:
-        verified: -1
-
-
-jobs:
-  # Defining a metajob will validate that the skip-if attribute of the
-  # metajob is correctly copied to the job.
-  - name: ^.*skip-if$
-    skip-if:
-      - project: ^org/project$
-        branch: ^master$
-        all-files-match-any:
-          - ^README$
-  - name: project-test-skip-if
-
-projects:
-  - name: org/project
-    check:
-      - project-test-skip-if
diff --git a/tests/test_scheduler.py b/tests/test_scheduler.py
index 328089b..8f27cd9 100755
--- a/tests/test_scheduler.py
+++ b/tests/test_scheduler.py
@@ -20,7 +20,6 @@
 import re
 import shutil
 import time
-import yaml
 from unittest import skip
 
 import git
@@ -715,37 +714,6 @@
         self.assertEqual(B.reported, 2)
         self.assertEqual(C.reported, 2)
 
-    @skip("Disabled for early v3 development")
-    def test_parse_skip_if(self):
-        job_yaml = """
-jobs:
-  - name: job_name
-    skip-if:
-      - project: ^project_name$
-        branch: ^stable/icehouse$
-        all-files-match-any:
-          - ^filename$
-      - project: ^project2_name$
-        all-files-match-any:
-          - ^filename2$
-    """.strip()
-        data = yaml.load(job_yaml)
-        config_job = data.get('jobs')[0]
-        cm = zuul.change_matcher
-        expected = cm.MatchAny([
-            cm.MatchAll([
-                cm.ProjectMatcher('^project_name$'),
-                cm.BranchMatcher('^stable/icehouse$'),
-                cm.MatchAllFiles([cm.FileMatcher('^filename$')]),
-            ]),
-            cm.MatchAll([
-                cm.ProjectMatcher('^project2_name$'),
-                cm.MatchAllFiles([cm.FileMatcher('^filename2$')]),
-            ]),
-        ])
-        matcher = self.sched._parseSkipIf(config_job)
-        self.assertEqual(expected, matcher)
-
     def test_patch_order(self):
         "Test that dependent patches are tested in the right order"
         A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
@@ -2234,35 +2202,36 @@
         self.assertEqual(B.data['status'], 'MERGED')
         self.assertEqual(B.reported, 2)
 
-    @skip("Disabled for early v3 development")
-    def _test_skip_if_jobs(self, branch, should_skip):
-        "Test that jobs with a skip-if filter run only when appropriate"
-        self.updateConfigLayout(
-            'tests/fixtures/layout-skip-if.yaml')
+    def _test_irrelevant_files_jobs(self, should_skip):
+        "Test that jobs with irrelevant-files filter run only when appropriate"
+        self.updateConfigLayout('layout-irrelevant-files')
         self.sched.reconfigure(self.config)
-        self.registerJobs()
+
+        if should_skip:
+            files = {'ignoreme': 'ignored\n'}
+        else:
+            files = {'respectme': 'please!\n'}
 
         change = self.fake_gerrit.addFakeChange('org/project',
-                                                branch,
-                                                'test skip-if')
+                                                'master',
+                                                'test irrelevant-files',
+                                                files=files)
         self.fake_gerrit.addEvent(change.getPatchsetCreatedEvent(1))
         self.waitUntilSettled()
 
         tested_change_ids = [x.changes[0] for x in self.history
-                             if x.name == 'project-test-skip-if']
+                             if x.name == 'project-test-irrelevant-files']
 
         if should_skip:
             self.assertEqual([], tested_change_ids)
         else:
             self.assertIn(change.data['number'], tested_change_ids)
 
-    @skip("Disabled for early v3 development")
-    def test_skip_if_match_skips_job(self):
-        self._test_skip_if_jobs(branch='master', should_skip=True)
+    def test_irrelevant_files_match_skips_job(self):
+        self._test_irrelevant_files_jobs(should_skip=True)
 
-    @skip("Disabled for early v3 development")
-    def test_skip_if_no_match_runs_job(self):
-        self._test_skip_if_jobs(branch='mp', should_skip=False)
+    def test_irrelevant_files_no_match_runs_job(self):
+        self._test_irrelevant_files_jobs(should_skip=False)
 
     @skip("Disabled for early v3 development")
     def test_test_config(self):