Waleed Khan 9607d954e4 tests: assert result of TestEnvironment::jj_cmd_cli_error ... In the test case `test_branch_mutually_exclusive_actions`, we weren't actually testing anything useful, because the interface has since changed to use subcommands instead of options. The test has been deleted in this commit, and `TestEnvironment::jj_cmd_cli_error` has been changed to return a `#[must_use]` `String` representing stderr. I also added `#[must_use]` to `TestEnvironment::jj_cmd_failure` while I was here.		2022-11-20 05:08:35 -08:00
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mod.rs	tests: assert result of TestEnvironment::jj_cmd_cli_error	2022-11-20 05:08:35 -08:00