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nix/tests/functional/json.sh
Jörg Thalheim f02c57dbfa tests/functional: use script flags compatible with macOS
Co-authored-by: John Ericson <git@JohnEricson.me>
2025-03-24 16:38:20 +01:00

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#!/usr/bin/env bash
source common.sh
# Meson would split the output into two buffers, ruining the coherence of the log.
exec 1>&2
cat > "$TEST_HOME/expected-machine.json" <<EOF
{"a":{"b":{"c":true}}}
EOF
cat > "$TEST_HOME/expected-pretty.json" <<EOF
{
"a": {
"b": {
"c": true
}
}
}
EOF
shellEscapeArray() {
local result=""
local separator=""
for item in "$@"; do
local escaped
printf -v escaped "%q" "$item"
result="${result}${separator}${escaped}"
separator=" "
done
echo "$result"
}
nix eval --json --expr '{ a.b.c = true; }' > "$TEST_HOME/actual.json"
diff -U3 "$TEST_HOME/expected-machine.json" "$TEST_HOME/actual.json"
nix eval --json --pretty --expr \
'{ a.b.c = true; }' > "$TEST_HOME/actual.json"
diff -U3 "$TEST_HOME/expected-pretty.json" "$TEST_HOME/actual.json"
if type script &>/dev/null; then
acceptsCommandFlag=0
# The macOS version just accepts multiple arguments, but util-linux and its `-c` flag only accept a single argument, which is then split on whitespace. We thus have to quote in that case.
if script -c true /dev/null 2>/dev/null; then
acceptsCommandFlag=1
fi
runScript() {
if [[ $acceptsCommandFlag -eq 0 ]]; then
script -e -q /dev/null "$@"
else
script -e -q /dev/null -c "$(shellEscapeArray "$@")"
fi
}
runScript nix eval --json --expr "{ a.b.c = true; }" > "$TEST_HOME/actual.json"
cat "$TEST_HOME/actual.json"
# script isn't perfectly accurate? Let's grep for a pretty good indication, as the pretty output has a space between the key and the value.
# diff -U3 "$TEST_HOME/expected-pretty.json" "$TEST_HOME/actual.json"
grep -F '"a": {' "$TEST_HOME/actual.json"
runScript nix eval --json --pretty --expr "{ a.b.c = true; }" > "$TEST_HOME/actual.json"
cat "$TEST_HOME/actual.json"
grep -F '"a": {' "$TEST_HOME/actual.json"
runScript nix eval --json --no-pretty --expr "{ a.b.c = true; }" > "$TEST_HOME/actual.json"
cat "$TEST_HOME/actual.json"
grep -F '"a":{' "$TEST_HOME/actual.json"
fi