some basic gcutils tests

tests/test_gcutils.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+
+import sys
+import time
+
+
+if '__pypy__' not in sys.builtin_module_names:
+    # pypy's gc really is different
+
+    from boltons.gcutils import get_all, toggle_gc_postcollect
+
+    def test_get_all():
+        class TestType(object):
+            pass
+
+        tt = TestType()
+
+        assert len(get_all(TestType)) == 1
+        assert len(get_all(bool)) == 0
+        return
+
+    def test_toggle_gc_postcollect():
+        COUNT = int(1e6)
+
+        start = time.time()
+        with toggle_gc_postcollect:
+            x = [{} for x in range(COUNT)]
+        no_gc_time = time.time() - start
+
+        start = time.time()
+        x = [{} for x in range(COUNT)]
+        with_gc_time = time.time() - start
+
+        assert no_gc_time < with_gc_time