test(_realcommand): add some test cases

Author: scop

test/t/unit/Makefile.am

@@ -22,6 +22,7 @@ EXTRA_DIST = \
 	test_unit_pnames.py \
 	test_unit_quote.py \
 	test_unit_quote_compgen.py \
+	test_unit_realcommand.py \
 	test_unit_split.py \
 	test_unit_tilde.py \
 	test_unit_unlocal.py \

test/t/unit/test_unit_realcommand.py

@@ -0,0 +1,70 @@
+import pytest
+
+from conftest import assert_bash_exec, bash_env_saved
+
+
+@pytest.mark.bashcomp(cmd=None, cwd="shared", ignore_env=r"^\+COMPREPLY=")
+class TestUnitRealCommand:
+    def test_non_pollution(self, bash):
+        """Test environment non-pollution, detected at teardown."""
+        assert_bash_exec(
+            bash,
+            "foo() { local cur=; _realcommand bar; }; foo; unset -f foo",
+            want_output=None,
+        )
+
+    def test_basename(self, bash):
+        with bash_env_saved(bash) as bash_env:
+            bash_env.write_variable("PATH", "$PWD/bin:$PATH", quote=False)
+            output = assert_bash_exec(
+                bash,
+                "_realcommand arp",
+                want_output=True,
+            )
+            assert output.strip().endswith("/shared/bin/arp")
+
+    def test_basename_nonexistent(self, bash):
+        filename = "non-existent-file-for-bash-completion-tests"
+        skipif = "! type -P %s" % filename
+        try:
+            assert_bash_exec(bash, skipif, want_output=None)
+        except AssertionError:
+            pytest.skipif(skipif)
+        output = assert_bash_exec(
+            bash,
+            "! _realcommand %s" % filename,
+            want_output=False,
+        )
+        assert output.strip() == ""
+
+    def test_relative(self, bash):
+        output = assert_bash_exec(
+            bash,
+            "_realcommand bin/arp",
+            want_output=True,
+        )
+        assert output.strip().endswith("/shared/bin/arp")
+
+    def test_relative_nonexistent(self, bash):
+        output = assert_bash_exec(
+            bash,
+            "! _realcommand bin/non-existent",
+            want_output=False,
+        )
+        assert output.strip() == ""
+
+    def test_absolute(self, bash):
+        output = assert_bash_exec(
+            bash,
+            '_realcommand "$PWD/bin/arp"',
+            want_output=True,
+        )
+        assert output.strip().endswith("/shared/bin/arp")
+
+    def test_absolute_nonexistent(self, bash):
+        output = assert_bash_exec(
+            bash,
+            '! _realcommand "$PWD/bin/non-existent"',
+            want_output=False,
+        )
+        assert output.strip() == ""