assert.bash

# Inspired by https://github.com/ztombol/bats-assert.

fail()
{
	local -r expected="$1"
	{
		echo "Expected: '$expected'"
		echo "Output:"
		for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
			echo "${lines[$idx]}"
		done
	} >&2
	return 1
}

assert_line() {
	local -r expected="$1"
	for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
		if [[ ${lines[$idx]} == "$expected" ]]; then
			return 0
		fi
	done
	fail "$expected"
}

refute_line() {
	local -r unexpected="$1"
	for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
		if [[ ${lines[$idx]} == "$unexpected" ]]; then
			echo "Unexpected string '$unexpected' found."
			return 1
		fi
	done
	return 0
}

assert_regex() {
	local -r expected="$1"
	for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
		if [[ ${lines[$idx]} =~ $expected ]]; then
			return 0
		fi
	done
	fail "$expected"
}

assert_partial() {
	local -r expected="$1"
	for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
		if [[ ${lines[$idx]} == *"$expected"* ]]; then
			return 0
		fi
	done
	fail "$expected"
}

assert_success() {
	if (( status != 0 )); then
		echo "Expected success, status=$status."
		return 1
	fi
	return 0
}

assert_failure() {
	local -r expected_exit_code="$1"
	if (( status != "$expected_exit_code" )); then
		echo "Expected failure with exit code = $expected_exit_code, status=$status."
		return 1
	fi
	return 0
}