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lix-releng-staging/tests/user-envs.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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source common.sh
if [ -z "${storeCleared-}" ]; then
clearStore
fi
clearProfiles
# Query installed: should be empty.
test "$(nix-env -p $profiles/test -q '*' | wc -l)" -eq 0
nix-env --switch-profile $profiles/test
# Query available: should contain several.
test "$(nix-env -f ./user-envs.nix -qa '*' | wc -l)" -eq 6
outPath10=$(nix-env -f ./user-envs.nix -qa --out-path --no-name '*' | grep foo-1.0)
drvPath10=$(nix-env -f ./user-envs.nix -qa --drv-path --no-name '*' | grep foo-1.0)
[ -n "$outPath10" -a -n "$drvPath10" ]
# Query with json
nix-env -f ./user-envs.nix -qa --json | jq -e '.[] | select(.name == "bar-0.1") | [
.outputName == "out",
.outputs.out == null
] | all'
nix-env -f ./user-envs.nix -qa --json --out-path | jq -e '.[] | select(.name == "bar-0.1") | [
.outputName == "out",
(.outputs.out | test("'$NIX_STORE_DIR'.*-0\\.1"))
] | all'
# Query descriptions.
nix-env -f ./user-envs.nix -qa '*' --description | grepQuiet silly
rm -rf $HOME/.nix-defexpr
ln -s $(pwd)/user-envs.nix $HOME/.nix-defexpr
nix-env -qa '*' --description | grepQuiet silly
# Query the system.
nix-env -qa '*' --system | grepQuiet $system
# Install "foo-1.0".
nix-env -i foo-1.0
# Query installed: should contain foo-1.0 now (which should be
# executable).
test "$(nix-env -q '*' | wc -l)" -eq 1
nix-env -q '*' | grepQuiet foo-1.0
test "$($profiles/test/bin/foo)" = "foo-1.0"
# Test nix-env -qc to compare installed against available packages, and vice versa.
nix-env -qc '*' | grepQuiet '< 2.0'
nix-env -qac '*' | grepQuiet '> 1.0'
# Test the -b flag to filter out source-only packages.
[ "$(nix-env -qab | wc -l)" -eq 1 ]
# Test the -s flag to get package status.
nix-env -qas | grepQuiet 'IP- foo-1.0'
nix-env -qas | grepQuiet -- '--- bar-0.1'
# Disable foo.
nix-env --set-flag active false foo
(! [ -e "$profiles/test/bin/foo" ])
# Enable foo.
nix-env --set-flag active true foo
[ -e "$profiles/test/bin/foo" ]
# Store the path of foo-1.0.
outPath10_=$(nix-env -q --out-path --no-name '*' | grep foo-1.0)
echo "foo-1.0 = $outPath10"
[ "$outPath10" = "$outPath10_" ]
# Install "foo-2.0pre1": should remove foo-1.0.
nix-env -i foo-2.0pre1
# Query installed: should contain foo-2.0pre1 now.
test "$(nix-env -q '*' | wc -l)" -eq 1
nix-env -q '*' | grepQuiet foo-2.0pre1
test "$($profiles/test/bin/foo)" = "foo-2.0pre1"
# Upgrade "foo": should install foo-2.0.
NIX_PATH=nixpkgs=./user-envs.nix:${NIX_PATH-} nix-env -f '<nixpkgs>' -u foo
# Query installed: should contain foo-2.0 now.
test "$(nix-env -q '*' | wc -l)" -eq 1
nix-env -q '*' | grepQuiet foo-2.0
test "$($profiles/test/bin/foo)" = "foo-2.0"
# Store the path of foo-2.0.
outPath20=$(nix-env -q --out-path --no-name '*' | grep foo-2.0)
test -n "$outPath20"
# Install bar-0.1, uninstall foo.
nix-env -i bar-0.1
nix-env -e foo
# Query installed: should only contain bar-0.1 now.
if nix-env -q '*' | grepQuiet foo; then false; fi
nix-env -q '*' | grepQuiet bar
# Rollback: should bring "foo" back.
oldGen="$(nix-store -q --resolve $profiles/test)"
nix-env --rollback
[ "$(nix-store -q --resolve $profiles/test)" != "$oldGen" ]
nix-env -q '*' | grepQuiet foo-2.0
nix-env -q '*' | grepQuiet bar
# Rollback again: should remove "bar".
nix-env --rollback
nix-env -q '*' | grepQuiet foo-2.0
if nix-env -q '*' | grepQuiet bar; then false; fi
# Count generations.
nix-env --list-generations
test "$(nix-env --list-generations | wc -l)" -eq 7
# Doing the same operation twice results in the same generation, which triggers
# "lazy" behaviour and does not create a new symlink.
nix-env -i foo
nix-env -i foo
# Count generations.
nix-env --list-generations
test "$(nix-env --list-generations | wc -l)" -eq 8
# Switch to a specified generation.
nix-env --switch-generation 7
[ "$(nix-store -q --resolve $profiles/test)" = "$oldGen" ]
# Install foo-1.0, now using its store path.
nix-env -i "$outPath10"
nix-env -q '*' | grepQuiet foo-1.0
nix-store -qR $profiles/test | grep "$outPath10"
nix-store -q --referrers-closure $profiles/test | grep "$(nix-store -q --resolve $profiles/test)"
[ "$(nix-store -q --deriver "$outPath10")" = $drvPath10 ]
# Uninstall foo-1.0, using a symlink to its store path.
ln -sfn $outPath10/bin/foo $TEST_ROOT/symlink
nix-env -e $TEST_ROOT/symlink
if nix-env -q '*' | grepQuiet foo; then false; fi
nix-store -qR $profiles/test | grepInverse "$outPath10"
# Install foo-1.0, now using a symlink to its store path.
nix-env -i $TEST_ROOT/symlink
nix-env -q '*' | grepQuiet foo
# Delete all old generations.
nix-env --delete-generations old
# Run the garbage collector. This should get rid of foo-2.0 but not
# foo-1.0.
nix-collect-garbage
test -e "$outPath10"
(! [ -e "$outPath20" ])
# Uninstall everything
nix-env -e '*'
test "$(nix-env -q '*' | wc -l)" -eq 0
# Installing "foo" should only install the newest foo.
nix-env -i foo
test "$(nix-env -q '*' | grep foo- | wc -l)" -eq 1
nix-env -q '*' | grepQuiet foo-2.0
# On the other hand, this should install both (and should fail due to
# a collision).
nix-env -e '*'
(! nix-env -i foo-1.0 foo-2.0)
# Installing "*" should install one foo and one bar.
nix-env -e '*'
nix-env -i '*'
test "$(nix-env -q '*' | wc -l)" -eq 2
nix-env -q '*' | grepQuiet foo-2.0
nix-env -q '*' | grepQuiet bar-0.1.1
# Test priorities: foo-0.1 has a lower priority than foo-1.0, so it
# should be possible to install both without a collision. Also test
# ‘--set-flag priority’ to manually override the declared priorities.
nix-env -e '*'
nix-env -i foo-0.1 foo-1.0
[ "$($profiles/test/bin/foo)" = "foo-1.0" ]
nix-env --set-flag priority 1 foo-0.1
[ "$($profiles/test/bin/foo)" = "foo-0.1" ]
# Test nix-env --set.
nix-env --set $outPath10
[ "$(nix-store -q --resolve $profiles/test)" = $outPath10 ]
nix-env --set $drvPath10
[ "$(nix-store -q --resolve $profiles/test)" = $outPath10 ]
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