From 91416d5169157c94f5c3acfb8cb1c41fce0864a0 Mon Sep 17 00:00:00 2001
From: ghm <ghm@google.com>
Date: Thu, 22 Jul 2021 07:58:06 -0700
Subject: [PATCH] Remove removed tests from `TEST_DEPS`, and add assertions to
 prevent recurrence.

PiperOrigin-RevId: 386240052
---
 .../errorprone/bugpatterns/build_defs.bzl     | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 core/src/main/java/com/google/errorprone/bugpatterns/build_defs.bzl

diff --git a/core/src/main/java/com/google/errorprone/bugpatterns/build_defs.bzl b/core/src/main/java/com/google/errorprone/bugpatterns/build_defs.bzl
new file mode 100644
index 00000000000..e0479aabb74
--- /dev/null
+++ b/core/src/main/java/com/google/errorprone/bugpatterns/build_defs.bzl
@@ -0,0 +1,25 @@
+#  Copyright 2021 The Error Prone Authors.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+"""Asserts that `keys` contains no entries not in `files`."""
+
+def assert_no_unexpected_files(keys, files):
+    unexpected_tests = difference(keys, files)
+    if unexpected_tests:
+        fail("Unexpected tests: " + ", ".join(unexpected_tests))
+
+# Returns the difference of two sets.
+def difference(set1, set2):
+    return [i for i in set1 if i not in set2]