forked from lix-project/lix
c11836126b
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>
35 lines
1.4 KiB
Bash
35 lines
1.4 KiB
Bash
source common.sh
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clearStore
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nix eval --expr 'assert 1 + 2 == 3; true'
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[[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]]
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missingImpureErrorMsg=$(! nix eval --expr 'builtins.readFile ./pure-eval.sh' 2>&1)
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echo "$missingImpureErrorMsg" | grepQuiet -- --impure || \
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fail "The error message should mention the “--impure” flag to unblock users"
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[[ $(nix eval --expr 'builtins.pathExists ./pure-eval.sh') == false ]] || \
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fail "Calling 'pathExists' on a non-authorised path should return false"
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(! nix eval --expr builtins.currentTime)
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(! nix eval --expr builtins.currentSystem)
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(! nix-instantiate --pure-eval ./simple.nix)
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[[ $(nix eval --impure --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x") == 123 ]]
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(! nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x")
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nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; sha256 = \"$(nix hash file pure-eval.nix --type sha256)\"; })).x"
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rm -rf $TEST_ROOT/eval-out
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nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ x = "foo" + "bar"; y = { z = "bla"; }; }'
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[[ $(cat $TEST_ROOT/eval-out/x) = foobar ]]
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[[ $(cat $TEST_ROOT/eval-out/y/z) = bla ]]
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rm -rf $TEST_ROOT/eval-out
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(! nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ "." = "bla"; }')
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(! nix eval --expr '~/foo')
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