1 files changed, 69 insertions, 0 deletions
diff --git a/test/t/unit/test_unit_parse_usage.py b/test/t/unit/test_unit_parse_usage.py
new file mode 100644
index 00000000..f0cb7114
--- /dev/null
+++ b/test/t/unit/test_unit_parse_usage.py
@@ -0,0 +1,69 @@
+import pytest
+
+from conftest import assert_bash_exec
+
+
+@pytest.mark.bashcomp(cmd=None, ignore_env=r"^\+declare -f fn$")
+class TestUnitParseUsage:
+    def test_1(self, bash):
+        assert_bash_exec(bash, "fn() { echo; }")
+        output = assert_bash_exec(bash, "_parse_usage fn")
+        assert not output
+
+    def test_2(self, bash):
+        assert_bash_exec(bash, "fn() { echo 'no dashes here'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn")
+        assert not output
+
+    def test_3(self, bash):
+        assert_bash_exec(bash, "fn() { echo 'foo [-f]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "-f".split()
+
+    def test_4(self, bash):
+        assert_bash_exec(bash, "fn() { echo 'bar [-aBcD] [-e X]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "-a -B -c -D -e".split()
+
+    def test_5(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[-[XyZ]] [--long=arg]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "-X -y -Z --long=".split()
+
+    def test_6(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[-s|--long]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "--long".split()
+
+    def test_7(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[-s, --long=arg]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "--long=".split()
+
+    def test_8(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[--long/-s] [-S/--longer]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "--long --longer".split()
+
+    def test_9(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[ -a ] [ -b foo ]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "-a -b".split()
+
+    def test_10(self, bash):
+        assert_bash_exec(bash, "fn() { echo '[ -a | --aa ]'; }")
+        output = assert_bash_exec(bash, "_parse_usage fn", want_output=True)
+        assert output.split() == "--aa".split()
+
+    def test_11(self, bash):
+        assert_bash_exec(
+            bash, "fn() { echo ----; echo ---foo; echo '----- bar'; }"
+        )
+        output = assert_bash_exec(bash, "_parse_usage fn")
+        assert not output
+
+    def test_12(self, bash):
+        output = assert_bash_exec(
+            bash, "echo '[-duh]' | _parse_usage -", want_output=True
+        )
+        assert output.split() == "-d -u -h".split()