--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-minifileset.py	Wed Jan 10 22:23:34 2018 -0500
@@ -0,0 +1,38 @@
+from __future__ import absolute_import
+from __future__ import print_function
+
+import os
+import sys
+
+# make it runnable directly without run-tests.py
+sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]
+
+from mercurial import minifileset
+
+def check(text, truecases, falsecases):
+    f = minifileset.compile(text)
+    for args in truecases:
+        if not f(*args):
+            print('unexpected: %r should include %r' % (text, args))
+    for args in falsecases:
+        if f(*args):
+            print('unexpected: %r should exclude %r' % (text, args))
+
+check('all()', [('a.php', 123), ('b.txt', 0)], [])
+check('none()', [], [('a.php', 123), ('b.txt', 0)])
+check('!!!!((!(!!all())))', [], [('a.php', 123), ('b.txt', 0)])
+
+check('"path:a" & (**.b | **.c)', [('a/b.b', 0), ('a/c.c', 0)], [('b/c.c', 0)])
+check('("path:a" & **.b) | **.c',
+      [('a/b.b', 0), ('a/c.c', 0), ('b/c.c', 0)], [])
+
+check('**.bin - size("<20B")', [('b.bin', 21)], [('a.bin', 11), ('b.txt', 21)])
+
+check('!!**.bin or size(">20B") + "path:bin" or !size(">10")',
+      [('a.bin', 11), ('b.txt', 21), ('bin/abc', 11)],
+      [('a.notbin', 11), ('b.txt', 11), ('bin2/abc', 11)])
+
+check('(**.php and size(">10KB")) | **.zip | ("path:bin" & !"path:bin/README") '
+      ' | size(">1M")',
+      [('a.php', 15000), ('a.zip', 0), ('bin/a', 0), ('bin/README', 1e7)],
+      [('a.php', 5000), ('b.zip2', 0), ('t/bin/a', 0), ('bin/README', 1)])