// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

import * as assert from 'assert';

import { TextRange } from '../../client/language/types';

// tslint:disable-next-line:max-func-body-length

suite('Language.TextRange', () => {

test('Empty static', async () => {

const e = TextRange.empty;

assert.equal(e.start, 0);

assert.equal(e.end, 0);

assert.equal(e.length, 0);

});

test('Construction', async () => {

let r = new TextRange(10, 20);

assert.equal(r.start, 10);

assert.equal(r.end, 30);

assert.equal(r.length, 20);

r = new TextRange(10, 0);

assert.equal(r.start, 10);

assert.equal(r.end, 10);

assert.equal(r.length, 0);

});

test('From bounds', async () => {

let r = TextRange.fromBounds(7, 9);

assert.equal(r.start, 7);

assert.equal(r.end, 9);

assert.equal(r.length, 2);

r = TextRange.fromBounds(5, 5);

assert.equal(r.start, 5);

assert.equal(r.end, 5);

assert.equal(r.length, 0);

});

test('Contains', async () => {

const r = TextRange.fromBounds(7, 9);

assert.equal(r.contains(-1), false);

assert.equal(r.contains(6), false);

assert.equal(r.contains(7), true);

assert.equal(r.contains(8), true);

assert.equal(r.contains(9), false);

assert.equal(r.contains(10), false);

});

test('Exceptions', async () => {

assert.throws(() => {

// @ts-ignore

const e = new TextRange(0, -1);

}, Error);

assert.throws(() => {

// @ts-ignore

const e = TextRange.fromBounds(3, 1);

}, Error);

});

});