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Use `set -u` and `set -o pipefail` to catch accidental mistakes and failures more strongly. - `set -u` catches the use of undefined variables - `set -o pipefail` catches failures (like `set -e`) earlier in the pipeline. This makes the tests a bit more robust. It is nice to read code not worrying about these spurious success paths (via uncaught) errors undermining the tests. Indeed, I caught some bugs doing this. There are a few tests where we run a command that should fail, and then search its output to make sure the failure message is one that we expect. Before, since the `grep` was the last command in the pipeline the exit code of those failing programs was silently ignored. Now with `set -o pipefail` it won't be, and we have to do something so the expected failure doesn't accidentally fail the test. To do that we use `expect` and a new `expectStderr` to check for the exact failing exit code. See the comments on each for why. `grep -q` is replaced with `grepQuiet`, see the comments on that function for why. `grep -v` when we just want the exit code is replaced with `grepInverse, see the comments on that function for why. `grep -q -v` together is, surprise surprise, replaced with `grepQuietInverse`, which is both combined. Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
27 lines
837 B
Bash
27 lines
837 B
Bash
source common.sh
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# Tests miscellaneous commands.
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# Do all commands have help?
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#nix-env --help | grepQuiet install
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#nix-store --help | grepQuiet realise
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#nix-instantiate --help | grepQuiet eval
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#nix-hash --help | grepQuiet base32
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# Can we ask for the version number?
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nix-env --version | grep "$version"
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# Usage errors.
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expect 1 nix-env --foo 2>&1 | grep "no operation"
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expect 1 nix-env -q --foo 2>&1 | grep "unknown flag"
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# Eval Errors.
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eval_arg_res=$(nix-instantiate --eval -E 'let a = {} // a; in a.foo' 2>&1 || true)
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echo $eval_arg_res | grep "at «string»:1:15:"
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echo $eval_arg_res | grep "infinite recursion encountered"
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eval_stdin_res=$(echo 'let a = {} // a; in a.foo' | nix-instantiate --eval -E - 2>&1 || true)
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echo $eval_stdin_res | grep "at «stdin»:1:15:"
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echo $eval_stdin_res | grep "infinite recursion encountered"
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