show_default uses default_map

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/test_options.py b/tests/test_options.py
index 2e50594..eea68c1 100644
--- a/tests/test_options.py
+++ b/tests/test_options.py
@@ -188,6 +188,18 @@ def test_multiple_default_help(runner):
     assert "1, 2" in result.output
 
 
+def test_show_default_default_map(runner):
+    @click.command()
+    @click.option("--arg", default="a", show_default=True)
+    def cmd(arg):
+        click.echo(arg)
+
+    result = runner.invoke(cmd, ["--help"], default_map={"arg": "b"})
+
+    assert not result.exception
+    assert "[default: b]" in result.output
+
+
 def test_multiple_default_type():
     opt = click.Option(["-a"], multiple=True, default=(1, 2))
     assert opt.nargs == 1