test_backend_missing_deps

#!/usr/bin/env bash

# Test that package manager backends show helpful warnings when their dependencies are missing

# Create a PATH that has mise but not package managers
# ROOT is set by run_test script
# Resolve the mise binary from PATH (release e2e ensures it's installed)
MISE_BIN="$(command -v mise)"
MISE_DIR="$(dirname "$MISE_BIN")"
export PATH="$MISE_DIR:/usr/bin:/bin:/usr/sbin:/sbin"

# Track overall test status
TEST_FAILED=0

# Helper function to check if a command exists in PATH
check_command_missing() {
	local cmd=$1
	if command -v "$cmd" >/dev/null 2>&1; then
		echo "ERROR: $cmd is found in PATH, test cannot verify missing dependency behavior"
		exit 1
	fi
}

# Helper function to test an expected error message
test_error_message() {
	local test_name=$1
	local output=$2
	local expected=$3

	if [[ $output == *"$expected"* ]]; then
		echo "✓ $test_name"
	else
		echo "ERROR: $test_name failed"
		echo "Expected: $expected"
		echo "Got: $output"
		TEST_FAILED=1
		return 1
	fi
}

# Helper function to test a command that should show a warning
test_backend_warning() {
	local backend_name=$1
	local command=$2
	local expected_warning=$3

	local output
	# Commands will succeed but show warnings, capture stderr
	output=$(MISE_LOG_LEVEL=warn eval "$command" 2>&1 || true)
	test_error_message "$backend_name shows correct warning" "$output" "$expected_warning"
}

# Test npm backend
test_npm() {
	echo "Testing npm backend with missing npm..."
	check_command_missing "npm"

	# Test ls-remote - should show warning but continue
	test_backend_warning "npm" "mise ls-remote npm:test-package" "npm may be required but was not found"

	# Check for helpful install instructions
	local output
	output=$(MISE_LOG_LEVEL=warn mise ls-remote npm:test-package 2>&1 || true)
	test_error_message "npm suggests installing node" "$output" "mise use node@latest"
	test_error_message "npm mentions npm is needed for queries" "$output" "npm is required for querying package information"

	# Test install - should show warning but continue
	test_backend_warning "npm" "mise install npm:test-package@latest" "npm may be required but was not found"

	# Test with bun mode enabled but npm still missing
	echo "Testing npm backend with bun mode enabled but npm missing..."
	export MISE_NPM_PACKAGE_MANAGER=bun
	test_backend_warning "npm (bun mode)" "mise ls-remote npm:test-package" "npm may be required but was not found"
	output=$(mise ls-remote npm:test-package 2>&1 || true)
	test_error_message "npm (bun mode) shows npm is required for queries" "$output" "npm is required for querying package information"
	unset MISE_NPM_PACKAGE_MANAGER
}

# Test cargo backend
test_cargo() {
	echo "Testing cargo backend with missing cargo..."

	# Remove cargo from PATH if it exists
	local new_path=""
	local IFS=':'
	read -ra PATHS <<<"$PATH"
	for p in "${PATHS[@]}"; do
		if [[ ! -x "$p/cargo" ]]; then
			[[ -z $new_path ]] && new_path="$p" || new_path="$new_path:$p"
		fi
	done
	export PATH="$new_path"

	check_command_missing "cargo"
	test_backend_warning "cargo" "mise install cargo:tiny@latest" "cargo may be required but was not found"
}

# Test go backend
test_go() {
	echo "Testing go backend with missing go..."

	# Remove go from PATH if it exists
	local new_path=""
	local IFS=':'
	read -ra PATHS <<<"$PATH"
	for p in "${PATHS[@]}"; do
		if [[ ! -x "$p/go" ]]; then
			[[ -z $new_path ]] && new_path="$p" || new_path="$new_path:$p"
		fi
	done
	export PATH="$new_path"

	check_command_missing "go"
	test_backend_warning "go" "mise ls-remote go:github.com/test/test" "go may be required but was not found"
}

# Run all tests
test_npm
test_cargo
test_go

if [ $TEST_FAILED -eq 0 ]; then
	echo "✓ backend dependency warning test passed"
else
	echo "✗ Some tests failed"
	exit 1
fi