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#!/bin/sh
set -u

. tests/lib.sh

assert_usage() {
	if ! grep -Fq 'Usage' "$1"; then
		echo 'Expected to find "Usage" text, it was missing:' >&2
		cat "$ERR" >&2
		exit 1
	fi
}

test_unsupported_long_flags() {
	testing 'unsupported long flags'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering --unknown-long-flag 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"
	test_ok
}

test_missing_required_flags() {
	testing 'missing required flags'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -a something -b else 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"
	test_ok
}

test_single_required_flag() {
	testing 'single required flag'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -p valid-test-profile 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -c 'head -n' 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"
	test_ok
}

test_flags_without_required_argument() {
	testing 'flags without required argument'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -pc 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -cp 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -p -c 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 2
	assert_usage "$ERR"
	test_ok
}

test_valid_options() {
	testing 'valid options'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	printf 'a\nb\nc\n' | \
		sh remembering \
			-p "always-unique-$(uuid)" \
			-c 'head -n1' \
			1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 0
	assert_empty_stderr
	assert_stdout 'a'
	test_ok
}

test_help_flags() {
	testing 'help flags'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -h 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 0
	assert_empty_stderr
	assert_usage "$OUT"

	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering --help 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 0
	assert_empty_stderr
	assert_usage "$OUT"
	test_ok
}

test_version_flags() {
	testing 'version flags'
	OUT="$(mktemp)"
	ERR="$(mktemp)"
	sh remembering -V 1>"$OUT" 2>"$ERR"
	STATUS=$?
	assert_status 0
	assert_empty_stderr
	if ! grep -Eq '^remembering-.+$' "$OUT"; then
		printf '\nERR: Bad STDOUT (%s)\n\nexpected: %s\ngot:      %s\n' \
			"$OUT" '^remembering-.+$' "$(cat "$OUT")" >&2
			exit 1
	fi
	test_ok
}

test_unsupported_long_flags
test_missing_required_flags
test_missing_required_flags
test_single_required_flag
test_flags_without_required_argument
test_valid_options
test_help_flags
test_version_flags