// Copyright 2014 Google Inc. 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 parser

import (
	"bytes"
	"testing"
)

var validPrinterTestCases = []struct {
	input  string
	output string
}{
	{
		input: `
foo ()
`,
		output: `
foo()
`,
	},
	{
		input: `
foo(name= "abc",)
`,
		output: `
foo(
    name = "abc",
)
`,
	},
	{
		input: `
			foo(
				stuff = ["asdf", "jkl;", "qwert",
					"uiop", "bnm,"]
			)
			`,
		output: `
foo(
    stuff = [
        "asdf",
        "bnm,",
        "jkl;",
        "qwert",
        "uiop",
    ],
)
`,
	},
	{
		input: `
		foo(
			stuff = {
				isGood: true,
				name: "bar"
			}
		)
		`,
		output: `
foo(
    stuff = {
        isGood: true,
        name: "bar",
    },
)
`,
	},
	{
		input: `
// comment1
foo(
	// comment2
	isGood = true,  // comment3
)
`,
		output: `
// comment1
foo(
    // comment2
    isGood = true, // comment3
)
`,
	},
	{
		input: `
foo(
	name = "abc",
)

bar (
	name = "def",
)
		`,
		output: `
foo(
    name = "abc",
)

bar(
    name = "def",
)
`,
	},
	{
		input: `
foo = "stuff"
bar = foo
baz = foo + bar
baz += foo
`,
		output: `
foo = "stuff"
bar = foo
baz = foo + bar
baz += foo
`,
	},
	{
		input: `
//test
test /* test */(
    srcs = [
        /*"blueprint/bootstrap/bootstrap.go",
    "blueprint/bootstrap/cleanup.go",*/
        "blueprint/bootstrap/command.go",
        "blueprint/bootstrap/doc.go", //doc.go
        "blueprint/bootstrap/config.go", //config.go
    ],
    deps = ["libabc"],
    incs = []
) //test
//test
test2(
)


//test3
`,
		output: `
//test
test /* test */ (
    srcs = [
        /*"blueprint/bootstrap/bootstrap.go",
        "blueprint/bootstrap/cleanup.go",*/
        "blueprint/bootstrap/command.go",
        "blueprint/bootstrap/config.go", //config.go
        "blueprint/bootstrap/doc.go", //doc.go
    ],
    deps = ["libabc"],
    incs = [],
) //test

//test
test2(
)

//test3
`,
	},
	{
		input: `
// test
module // test

(
    srcs
    = [
        "src1.c",
        "src2.c",
    ],
//test
)
//test2
`,
		output: `
// test
module( // test

    srcs = [
        "src1.c",
        "src2.c",
    ],
    //test
)
//test2
`,
	},
}

func TestPrinter(t *testing.T) {
	for _, testCase := range validPrinterTestCases {
		in := testCase.input[1:]
		expected := testCase.output[1:]

		r := bytes.NewBufferString(in)
		file, errs := Parse("", r, NewScope(nil))
		if len(errs) != 0 {
			t.Errorf("test case: %s", in)
			t.Errorf("unexpected errors:")
			for _, err := range errs {
				t.Errorf("  %s", err)
			}
			t.FailNow()
		}

		SortLists(file)

		got, err := Print(file)
		if err != nil {
			t.Errorf("test case: %s", in)
			t.Errorf("unexpected error: %s", err)
			t.FailNow()
		}

		if string(got) != expected {
			t.Errorf("test case: %s", in)
			t.Errorf("  expected: %s", expected)
			t.Errorf("       got: %s", string(got))
		}
	}
}