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|
#!/bin/sh
set -eu
ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
CAT_BIN=${CAT_BIN:-"$ROOT/out/cat"}
TMPDIR=${TMPDIR:-/tmp}
WORKDIR=$(mktemp -d "$TMPDIR/cat-test.XXXXXX")
trap 'rm -rf "$WORKDIR"' EXIT INT TERM
fail() {
printf '%s\n' "FAIL: $1" >&2
exit 1
}
assert_eq() {
name=$1
expected=$2
actual=$3
if [ "$expected" != "$actual" ]; then
printf '%s\n' "FAIL: $name" >&2
printf '%s\n' "--- expected ---" >&2
printf '%s' "$expected" >&2
printf '\n%s\n' "--- actual ---" >&2
printf '%s' "$actual" >&2
printf '\n' >&2
exit 1
fi
}
[ -x "$CAT_BIN" ] || fail "missing binary: $CAT_BIN"
printf 'hello\nworld\n' > "$WORKDIR/basic.txt"
assert_eq "file passthrough" \
"hello
world" \
"$("$CAT_BIN" "$WORKDIR/basic.txt")"
assert_eq "stdin passthrough" \
"stdin-check" \
"$(printf 'stdin-check\n' | "$CAT_BIN" -)"
printf 'a\n\n\nb\t\177\n' > "$WORKDIR/fixture.txt"
assert_eq "number all lines" \
" 1 a
2
3
4 b " \
"$("$CAT_BIN" -n "$WORKDIR/fixture.txt")"
assert_eq "number nonblank lines" \
" 1 a
2 b " \
"$("$CAT_BIN" -b "$WORKDIR/fixture.txt")"
assert_eq "squeeze blanks" \
"a
b " \
"$("$CAT_BIN" -s "$WORKDIR/fixture.txt")"
assert_eq "show ends" \
"a$
$
$
b ^?$" \
"$("$CAT_BIN" -e "$WORKDIR/fixture.txt")"
assert_eq "show tabs" \
"a
b^I^?" \
"$("$CAT_BIN" -t "$WORKDIR/fixture.txt")"
assert_eq "show nonprinting" \
"a
b ^?" \
"$("$CAT_BIN" -v "$WORKDIR/fixture.txt")"
usage_output=$("$CAT_BIN" -z 2>&1 || true)
case $usage_output in
*"usage: cat [-belnstuv] [file ...]"*) ;;
*) fail "usage on bad flag" ;;
esac
printf '%s\n' "PASS"
|
