1 files changed, 59 insertions, 0 deletions
diff --git a/test/t/unit/test_unit_expand_tilde.py b/test/t/unit/test_unit_expand_tilde.py
new file mode 100644
index 0000000..3552fd6
--- /dev/null
+++ b/test/t/unit/test_unit_expand_tilde.py
@@ -0,0 +1,59 @@
+import pytest
+
+from conftest import assert_bash_exec
+
+
+@pytest.mark.bashcomp(cmd=None)
+class TestUnitExpandTilde:
+    def test_1(self, bash):
+        """The old interface `__expand_tilde_by_ref` should not fail when it is
+        called without arguments"""
+        assert_bash_exec(bash, "__expand_tilde_by_ref >/dev/null")
+
+    def test_2(self, bash):
+        """Test environment non-pollution, detected at teardown."""
+        assert_bash_exec(
+            bash,
+            '_x() { local REPLY; _comp_expand_tilde "~"; }; _x; unset -f _x',
+        )
+
+    @pytest.fixture(scope="class")
+    def functions(self, bash):
+        # $HOME tinkering: protect against $HOME != ~user; our "home" is the
+        # latter but plain_tilde follows $HOME
+        assert_bash_exec(
+            bash,
+            '_comp__test_unit() { local REPLY HOME=$1; _comp_expand_tilde "$2"; printf "%s\\n" "$REPLY"; }',
+        )
+
+    @pytest.mark.parametrize("plain_tilde", (True, False))
+    @pytest.mark.parametrize(
+        "suffix_expanded",
+        (
+            ("", True),
+            ("/foo", True),
+            (r"/\$HOME", True),
+            ("/a  b", True),
+            ("/*", True),
+            (";echo hello", False),
+            ("/a;echo hello", True),
+        ),
+    )
+    def test_expand(
+        self, bash, user_home, plain_tilde, suffix_expanded, functions
+    ):
+        user, home = user_home
+        suffix, expanded = suffix_expanded
+        home2 = home
+        if plain_tilde:
+            user = ""
+            if not suffix or not expanded:
+                home2 = "~"
+        elif not expanded:
+            home2 = "~%s" % user
+        output = assert_bash_exec(
+            bash,
+            r'_comp__test_unit "%s" "~%s%s"' % (home, user, suffix),
+            want_output=True,
+        )
+        assert output.strip() == "%s%s" % (home2, suffix.replace(r"\$", "$"))