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Unified Diff: build/find_isolated_tests.py

Issue 2101243005: Add a snapshot of flutter/engine/src/build to our sdk (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: add README.dart Created 4 years, 6 months ago
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Index: build/find_isolated_tests.py
diff --git a/build/find_isolated_tests.py b/build/find_isolated_tests.py
new file mode 100755
index 0000000000000000000000000000000000000000..c5b3ab77a90454ceade7215d17515b8c20757e02
--- /dev/null
+++ b/build/find_isolated_tests.py
@@ -0,0 +1,78 @@
+#!/usr/bin/env python
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Scans build output directory for .isolated files, calculates their SHA1
+hashes, stores final list in JSON document and then removes *.isolated files
+found (to ensure no stale *.isolated stay around on the next build).
+
+Used to figure out what tests were build in isolated mode to trigger these
+tests to run on swarming.
+
+For more info see:
+https://sites.google.com/a/chromium.org/dev/developers/testing/isolated-testing
+"""
+
+import glob
+import hashlib
+import json
+import optparse
+import os
+import re
+import sys
+
+
+def hash_file(filepath):
+ """Calculates the hash of a file without reading it all in memory at once."""
+ digest = hashlib.sha1()
+ with open(filepath, 'rb') as f:
+ while True:
+ chunk = f.read(1024*1024)
+ if not chunk:
+ break
+ digest.update(chunk)
+ return digest.hexdigest()
+
+
+def main():
+ parser = optparse.OptionParser(
+ usage='%prog --build-dir <path> --output-json <path>',
+ description=sys.modules[__name__].__doc__)
+ parser.add_option(
+ '--build-dir',
+ help='Path to a directory to search for *.isolated files.')
+ parser.add_option(
+ '--output-json',
+ help='File to dump JSON results into.')
+
+ options, _ = parser.parse_args()
+ if not options.build_dir:
+ parser.error('--build-dir option is required')
+ if not options.output_json:
+ parser.error('--output-json option is required')
+
+ result = {}
+
+ # Get the file hash values and output the pair.
+ pattern = os.path.join(options.build_dir, '*.isolated')
+ for filepath in sorted(glob.glob(pattern)):
+ test_name = os.path.splitext(os.path.basename(filepath))[0]
+ if re.match(r'^.+?\.\d$', test_name):
+ # It's a split .isolated file, e.g. foo.0.isolated. Ignore these.
+ continue
+
+ # TODO(csharp): Remove deletion once the isolate tracked dependencies are
+ # inputs for the isolated files.
+ sha1_hash = hash_file(filepath)
+ os.remove(filepath)
+ result[test_name] = sha1_hash
+
+ with open(options.output_json, 'wb') as f:
+ json.dump(result, f)
+
+ return 0
+
+
+if __name__ == '__main__':
+ sys.exit(main())
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