add tests

tests/test_zen_exclude.py

@@ -0,0 +1,35 @@
+import pytest
+
+from hydra_zen import builds, instantiate, make_custom_builds_fn
+
+
+@pytest.mark.parametrize("bad_exclude", [1, "x"])
+def test_validate_exclude(bad_exclude):
+    with pytest.raises(TypeError):
+        builds(dict, zen_exclude=bad_exclude)
+
+
+def foo(x=1, _y=2, _z=3):
+    return "apple"
+
+
+@pytest.mark.parametrize("partial", [True, False])
+@pytest.mark.parametrize("custom_builds", [True, False])
+@pytest.mark.parametrize("exclude", [["_y", "_z"], lambda x: x.startswith("_")])
+def test_exclude_named(partial: bool, custom_builds: bool, exclude):
+    if custom_builds:
+        b = make_custom_builds_fn(
+            populate_full_signature=True, zen_partial=partial, zen_exclude=exclude
+        )
+        conf = b(foo)()
+    else:
+        conf = builds(
+            foo, populate_full_signature=True, zen_partial=partial, zen_exclude=exclude
+        )()
+    assert not hasattr(conf, "_y")
+    assert not hasattr(conf, "_z")
+    assert conf.x == 1
+    if not partial:
+        assert instantiate(conf) == "apple"
+    else:
+        assert instantiate(conf)() == "apple"  # type: ignore