/*
Copyright 2018 The Kubernetes Authors All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package lua

import (
	"path/filepath"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/yuin/gopher-lua"

	hapi "k8s.io/helm/pkg/hapi/chart"
)

func TestLoadScripts(t *testing.T) {
	chart := &hapi.Chart{
		Metadata: &hapi.Metadata{
			Name: "starboard",
		},
		Ext: []*hapi.File{
			{
				Name: filepath.Join("ext", "lua", "chart.lua"),
				Data: []byte(`hello="world"; name="Ishmael"`),
			},
			{
				Name: filepath.Join("ext", "lua", "decoy.lua"),
				Data: []byte(`hello="goodbye"`),
			},
		},
	}

	outterChart := &hapi.Chart{
		Metadata: &hapi.Metadata{
			Name: "port",
		},
		Ext: []*hapi.File{
			{
				Name: filepath.Join("ext", "lua", "chart.lua"),
				Data: []byte(`hello="Nantucket"; goodbye ="Spouter"`),
			},
			{
				Name: filepath.Join("ext", "lua", "decoy.lua"),
				Data: []byte(`hello="goodbye"`),
			},
		},
		Dependencies: []*hapi.Chart{chart},
	}

	// Simple test on a single chart
	vm := lua.NewState()
	LoadScripts(vm, chart)

	world := vm.GetGlobal("hello").String()
	assert.Equal(t, world, "world", `expected hello="world"`)

	// Test on a nested chart
	vm = lua.NewState()
	LoadScripts(vm, outterChart)

	// This should override the child chart's value
	result := vm.GetGlobal("hello").String()
	assert.Equal(t, result, "Nantucket", `expected hello="Nantucket"`)

	// This should be unchanged
	result = vm.GetGlobal("goodbye").String()
	assert.Equal(t, result, "Spouter", `expected goodbye="Spouter"`)

	// This should come from the child chart
	result = vm.GetGlobal("name").String()
	assert.Equal(t, result, "Ishmael", `expected name="Ishmael"`)
}