lix/tests/ca/build.sh
John Ericson c11836126b Harden tests' bash
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>
2023-03-08 10:26:30 -05:00

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#!/usr/bin/env bash
source common.sh
drv=$(nix-instantiate ./content-addressed.nix -A rootCA --arg seed 1)
nix show-derivation "$drv" --arg seed 1
buildAttr () {
local derivationPath=$1
local seedValue=$2
shift; shift
local args=("./content-addressed.nix" "-A" "$derivationPath" --arg seed "$seedValue" "--no-out-link")
args+=("$@")
nix-build "${args[@]}"
}
testRemoteCache () {
clearCache
local outPath=$(buildAttr dependentNonCA 1)
nix copy --to file://$cacheDir $outPath
clearStore
buildAttr dependentNonCA 1 --option substituters file://$cacheDir --no-require-sigs |& grepQuietInverse "building dependent-non-ca"
}
testDeterministicCA () {
[[ $(buildAttr rootCA 1) = $(buildAttr rootCA 2) ]]
}
testCutoffFor () {
local out1 out2
out1=$(buildAttr $1 1)
# The seed only changes the root derivation, and not it's output, so the
# dependent derivations should only need to be built once.
buildAttr rootCA 2
out2=$(buildAttr $1 2 -j0)
test "$out1" == "$out2"
}
testCutoff () {
# Don't directly build dependentCA, that way we'll make sure we don't rely on
# dependent derivations always being already built.
#testDerivation dependentCA
testCutoffFor transitivelyDependentCA
testCutoffFor dependentNonCA
testCutoffFor dependentFixedOutput
}
testGC () {
nix-instantiate ./content-addressed.nix -A rootCA --arg seed 5
nix-collect-garbage --option keep-derivations true
clearStore
buildAttr rootCA 1 --out-link $TEST_ROOT/rootCA
nix-collect-garbage
buildAttr rootCA 1 -j0
}
testNixCommand () {
clearStore
nix build --file ./content-addressed.nix --no-link
}
# Regression test for https://github.com/NixOS/nix/issues/4775
testNormalization () {
clearStore
outPath=$(buildAttr rootCA 1)
test "$(stat -c %Y $outPath)" -eq 1
}
# Disabled until we have it properly working
# testRemoteCache
clearStore
testNormalization
testDeterministicCA
clearStore
testCutoff
testGC
testNixCommand