Merge pull request #15329 from mattip/issue-15202a

TST: move _no_tracing to testing._private, remove testing.support

1 files changed, 21 insertions, 0 deletions

diff --git a/numpy/testing/_private/utils.py b/numpy/testing/_private/utils.py
index 914491b71..69b2af4df 100644
--- a/numpy/testing/_private/utils.py
+++ b/numpy/testing/_private/utils.py
@@ -2474,3 +2474,24 @@ def _get_mem_available():
             return info['memfree'] + info['cached']
 
     return None
+
+
+def _no_tracing(func):
+    """
+    Decorator to temporarily turn off tracing for the duration of a test.
+    Needed in tests that check refcounting, otherwise the tracing itself
+    influences the refcounts
+    """
+    if not hasattr(sys, 'gettrace'):
+        return func
+    else:
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            original_trace = sys.gettrace()
+            try:
+                sys.settrace(None)
+                return func(*args, **kwargs)
+            finally:
+                sys.settrace(original_trace)
+        return wrapper
+