Add script to summarize WPT test directories with failing tests.

etc/wpt_result_analyzer.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+
+# Copyright 2019 The Servo Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+import configparser
+import os
+
+test_root = os.path.join('tests', 'wpt', 'web-platform-tests')
+meta_root = os.path.join('tests', 'wpt', 'metadata')
+
+test_counts = {}
+meta_counts = {}
+
+for base_dir, dir_names, files in os.walk(test_root):
+    if base_dir == test_root:
+        continue
+
+    rel_base = os.path.relpath(base_dir, test_root)
+    if not os.path.exists(os.path.join(meta_root, rel_base)):
+        continue
+
+    test_files = []
+    exts = ['.html', '.htm', '.xht', '.xhtml', '.window.js', '.worker.js', '.any.js']
+    for f in files:
+        for ext in exts:
+            if f.endswith(ext):
+                test_files += [f]
+    test_counts[rel_base] = len(test_files)
+
+for base_dir, dir_names, files in os.walk(meta_root):
+    if base_dir == meta_root:
+        continue
+
+    rel_base = os.path.relpath(base_dir, meta_root)
+    num_files = len(files)
+    if '__dir__.ini' in files:
+        num_files -= 1
+    meta_counts[rel_base] = num_files
+
+final_counts = []
+for (test_dir, test_count) in test_counts.items():
+    if not test_count:
+        continue
+    meta_count = meta_counts.get(test_dir, 0)
+    final_counts += [(test_dir, test_count, meta_count)]
+
+print('Test counts')
+print('dir: %% failed (num tests / num failures)')
+s = sorted(final_counts, key=lambda x: x[2] / x[1])
+for (test_dir, test_count, meta_count) in reversed(sorted(s, key=lambda x: x[2])):
+    if not meta_count:
+        continue
+    print('%s: %.2f%% (%d / %d)' % (test_dir, meta_count / test_count * 100, test_count, meta_count))