Fix #616: allow setting prog_name in CliRunner.invoke

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/test_testing.py b/tests/test_testing.py
index a74c5de..12f57de 100644
--- a/tests/test_testing.py
+++ b/tests/test_testing.py
@@ -246,3 +246,14 @@ def test_args(args, expected_output):
     result = runner.invoke(cli_args, args=args)
     assert result.exit_code == 0
     assert result.output == expected_output
+
+
+def test_setting_prog_name_in_extra():
+    @click.command()
+    def cli():
+        click.echo("ok")
+
+    runner = CliRunner()
+    result = runner.invoke(cli, prog_name="foobar")
+    assert not result.exception
+    assert result.output == 'ok\n'