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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)
70 lines
2 KiB
Bash
70 lines
2 KiB
Bash
source common.sh
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export TEST_VAR=foo # for eval-okay-getenv.nix
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nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grepQuiet Hello
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nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1 | grepQuietInverse Hello
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expectStderr 1 nix-instantiate --show-trace --eval -E 'builtins.addErrorContext "Hello" (throw "Foo")' 2>&1 | grepQuiet Hello
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set +x
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fail=0
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for i in lang/parse-fail-*.nix; do
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echo "parsing $i (should fail)";
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i=$(basename $i .nix)
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if nix-instantiate --parse - < lang/$i.nix; then
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echo "FAIL: $i shouldn't parse"
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fail=1
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fi
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done
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for i in lang/parse-okay-*.nix; do
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echo "parsing $i (should succeed)";
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i=$(basename $i .nix)
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if ! nix-instantiate --parse - < lang/$i.nix > lang/$i.out; then
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echo "FAIL: $i should parse"
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fail=1
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fi
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done
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for i in lang/eval-fail-*.nix; do
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echo "evaluating $i (should fail)";
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i=$(basename $i .nix)
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if nix-instantiate --eval lang/$i.nix; then
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echo "FAIL: $i shouldn't evaluate"
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fail=1
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fi
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done
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for i in lang/eval-okay-*.nix; do
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echo "evaluating $i (should succeed)";
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i=$(basename $i .nix)
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if test -e lang/$i.exp; then
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flags=
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if test -e lang/$i.flags; then
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flags=$(cat lang/$i.flags)
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fi
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if ! NIX_PATH=lang/dir3:lang/dir4 nix-instantiate $flags --eval --strict lang/$i.nix > lang/$i.out; then
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echo "FAIL: $i should evaluate"
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fail=1
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elif ! diff lang/$i.out lang/$i.exp; then
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echo "FAIL: evaluation result of $i not as expected"
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fail=1
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fi
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fi
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if test -e lang/$i.exp.xml; then
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if ! nix-instantiate --eval --xml --no-location --strict \
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lang/$i.nix > lang/$i.out.xml; then
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echo "FAIL: $i should evaluate"
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fail=1
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elif ! cmp -s lang/$i.out.xml lang/$i.exp.xml; then
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echo "FAIL: XML evaluation result of $i not as expected"
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fail=1
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fi
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fi
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done
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exit $fail
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