BUG: distutils: Remove named templates from the output.

The code now does not copy the named templates found outside
a function or subroutine to the output file.

Fixes gh-10712.

1 files changed, 48 insertions, 0 deletions

diff --git a/numpy/distutils/tests/test_from_template.py b/numpy/distutils/tests/test_from_template.py
new file mode 100644
index 000000000..d3c513437
--- /dev/null
+++ b/numpy/distutils/tests/test_from_template.py
@@ -0,0 +1,48 @@
+
+from numpy.distutils.from_template import process_str
+from numpy.testing import assert_equal, run_module_suite
+
+
+pyf_src = """
+python module foo
+    <_rd=real,double precision>
+    interface
+        subroutine <s,d>foosub(tol)
+            <_rd>, intent(in,out) :: tol
+        end subroutine <s,d>foosub
+    end interface
+end python module foo
+"""
+
+expected_pyf = """
+python module foo
+    interface
+        subroutine sfoosub(tol)
+            real, intent(in,out) :: tol
+        end subroutine sfoosub
+        subroutine dfoosub(tol)
+            double precision, intent(in,out) :: tol
+        end subroutine dfoosub
+    end interface
+end python module foo
+"""
+
+
+def normalize_whitespace(s):
+    """
+    Remove leading and trailing whitespace, and convert internal
+    stretches of whitespace to a single space.
+    """
+    return ' '.join(s.split())
+
+
+def test_from_template():
+    """Regression test for gh-10712."""
+    pyf = process_str(pyf_src)
+    normalized_pyf = normalize_whitespace(pyf)
+    normalized_expected_pyf = normalize_whitespace(expected_pyf)
+    assert_equal(normalized_pyf, normalized_expected_pyf)
+
+
+if __name__ == "__main__":
+    run_module_suite()