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67ab776e15
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.
(cherry picked from commit c11836126b)
52 lines
1.4 KiB
Bash
52 lines
1.4 KiB
Bash
source common.sh
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###################################################
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# Check that --dry-run isn't confused with read-only mode
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# https://github.com/NixOS/nix/issues/1795
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clearStore
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clearCache
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# Ensure this builds successfully first
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nix build --no-link -f dependencies.nix
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clearStore
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clearCache
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# Try --dry-run using old command first
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nix-build --no-out-link dependencies.nix --dry-run 2>&1 | grep "will be built"
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# Now new command:
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nix build -f dependencies.nix --dry-run 2>&1 | grep "will be built"
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# TODO: XXX: FIXME: #1793
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# Disable this part of the test until the problem is resolved:
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if [ -n "${ISSUE_1795_IS_FIXED-}" ]; then
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clearStore
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clearCache
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# Try --dry-run using new command first
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nix build -f dependencies.nix --dry-run 2>&1 | grep "will be built"
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# Now old command:
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nix-build --no-out-link dependencies.nix --dry-run 2>&1 | grep "will be built"
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fi
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###################################################
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# Check --dry-run doesn't create links with --dry-run
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# https://github.com/NixOS/nix/issues/1849
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clearStore
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clearCache
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RESULT=$TEST_ROOT/result-link
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rm -f $RESULT
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nix-build dependencies.nix -o $RESULT --dry-run
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[[ ! -h $RESULT ]] || fail "nix-build --dry-run created output link"
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nix build -f dependencies.nix -o $RESULT --dry-run
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[[ ! -h $RESULT ]] || fail "nix build --dry-run created output link"
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nix build -f dependencies.nix -o $RESULT
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[[ -h $RESULT ]]
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