1 files changed, 25 insertions, 0 deletions
diff --git a/tests/errors/e_assert.pyx b/tests/errors/e_assert.pyx
new file mode 100644
index 000000000..616d86ff1
--- /dev/null
+++ b/tests/errors/e_assert.pyx
@@ -0,0 +1,25 @@
+# mode: error
+# tag: assert
+
+def nontrivial_assert_in_nogil(int a, obj):
+    with nogil:
+        # NOK
+        assert obj
+        assert a*obj
+        assert obj, "abc"
+
+        # OK
+        assert a
+        assert a*a
+        assert a, "abc"
+        assert a, u"abc"
+        assert a, f"123{a}xyz"
+
+
+_ERRORS = """
+7:15: Truth-testing Python object not allowed without gil
+8:15: Converting to Python object not allowed without gil
+8:16: Operation not allowed without gil
+8:16: Truth-testing Python object not allowed without gil
+9:15: Truth-testing Python object not allowed without gil
+"""