diff --git a/tools/bionicbb/test_tasks.py b/tools/bionicbb/test_tasks.py
new file mode 100644
index 0000000..b36cbad
--- /dev/null
+++ b/tools/bionicbb/test_tasks.py
@@ -0,0 +1,94 @@
+import mock
+import unittest
+
+import presubmit
+
+
+class TestShouldSkipBuild(unittest.TestCase):
+    @mock.patch('presubmit.contains_bionicbb')
+    @mock.patch('presubmit.contains_cleanspec')
+    @mock.patch('gerrit.get_commit')
+    def test_accepts_googlers(self, mock_commit, *other_checks):
+        mock_commit.return_value = {
+            'committer': {'email': 'googler@google.com'}
+        }
+
+        for other_check in other_checks:
+            other_check.return_value = False
+
+        for message_type in ('newchange', 'newpatchset', 'comment'):
+            self.assertFalse(presubmit.should_skip_build({
+                'MessageType': message_type,
+                'Change-Id': '',
+                'PatchSet': '',
+            }))
+
+    @mock.patch('presubmit.contains_bionicbb')
+    @mock.patch('presubmit.contains_cleanspec')
+    @mock.patch('gerrit.get_commit')
+    def test_rejects_googlish_domains(self, mock_commit, *other_checks):
+        mock_commit.return_value = {
+            'committer': {'email': 'fakegoogler@google.com.fake.com'}
+        }
+
+        for other_check in other_checks:
+            other_check.return_value = False
+
+        for message_type in ('newchange', 'newpatchset', 'comment'):
+            self.assertTrue(presubmit.should_skip_build({
+                'MessageType': message_type,
+                'Change-Id': '',
+                'PatchSet': '',
+            }))
+
+    @mock.patch('presubmit.contains_bionicbb')
+    @mock.patch('presubmit.contains_cleanspec')
+    @mock.patch('gerrit.get_commit')
+    def test_rejects_non_googlers(self, mock_commit, *other_checks):
+        mock_commit.return_value = {
+            'committer': {'email': 'johndoe@example.com'}
+        }
+
+        for other_check in other_checks:
+            other_check.return_value = False
+
+        for message_type in ('newchange', 'newpatchset', 'comment'):
+            self.assertTrue(presubmit.should_skip_build({
+                'MessageType': message_type,
+                'Change-Id': '',
+                'PatchSet': '',
+            }))
+
+    @mock.patch('presubmit.contains_bionicbb')
+    @mock.patch('presubmit.is_untrusted_committer')
+    @mock.patch('gerrit.get_files_for_revision')
+    def test_skips_cleanspecs(self, mock_files, *other_checks):
+        mock_files.return_value = ['foo/CleanSpec.mk']
+        for other_check in other_checks:
+            other_check.return_value = False
+
+        for message_type in ('newchange', 'newpatchset', 'comment'):
+            self.assertTrue(presubmit.should_skip_build({
+                'MessageType': message_type,
+                'Change-Id': '',
+                'PatchSet': '',
+            }))
+
+    @mock.patch('presubmit.contains_cleanspec')
+    @mock.patch('presubmit.is_untrusted_committer')
+    @mock.patch('gerrit.get_files_for_revision')
+    def test_skips_bionicbb(self, mock_files, *other_checks):
+        mock_files.return_value = ['tools/bionicbb/common.sh']
+        for other_check in other_checks:
+            other_check.return_value = False
+
+        for message_type in ('newchange', 'newpatchset', 'comment'):
+            self.assertTrue(presubmit.should_skip_build({
+                'MessageType': message_type,
+                'Change-Id': '',
+                'PatchSet': '',
+            }))
+
+
+if __name__ == '__main__':
+    unittest.main()