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xterm.js/src/BufferLine.test.ts
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/**
* Copyright (c) 2018 The xterm.js authors. All rights reserved.
* @license MIT
*/
import * as chai from 'chai';
import { BufferLine } from './BufferLine';
import { CharData, IBufferLine } from './Types';
import { NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE } from './Buffer';
class TestBufferLine extends BufferLine {
public toArray(): CharData[] {
const result = [];
for (let i = 0; i < this.length; ++i) {
result.push(this.get(i));
}
return result;
}
}
describe('BufferLine', function(): void {
it('ctor', function(): void {
let line: IBufferLine = new TestBufferLine(0);
chai.expect(line.length).equals(0);
chai.expect(line.isWrapped).equals(false);
line = new TestBufferLine(10);
chai.expect(line.length).equals(10);
chai.expect(line.get(0)).eql([0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
chai.expect(line.isWrapped).equals(false);
line = new TestBufferLine(10, null, true);
chai.expect(line.length).equals(10);
chai.expect(line.get(0)).eql([0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
chai.expect(line.isWrapped).equals(true);
line = new TestBufferLine(10, [123, 'a', 456, 'a'.charCodeAt(0)], true);
chai.expect(line.length).equals(10);
chai.expect(line.get(0)).eql([123, 'a', 456, 'a'.charCodeAt(0)]);
chai.expect(line.isWrapped).equals(true);
});
it('insertCells', function(): void {
const line = new TestBufferLine(3);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.insertCells(1, 3, [4, 'd', 0, 'd'.charCodeAt(0)]);
chai.expect(line.toArray()).eql([
[1, 'a', 0, 'a'.charCodeAt(0)],
[4, 'd', 0, 'd'.charCodeAt(0)],
[4, 'd', 0, 'd'.charCodeAt(0)]
]);
});
it('deleteCells', function(): void {
const line = new TestBufferLine(5);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.set(3, [4, 'd', 0, 'd'.charCodeAt(0)]);
line.set(4, [5, 'e', 0, 'e'.charCodeAt(0)]);
line.deleteCells(1, 2, [6, 'f', 0, 'f'.charCodeAt(0)]);
chai.expect(line.toArray()).eql([
[1, 'a', 0, 'a'.charCodeAt(0)],
[4, 'd', 0, 'd'.charCodeAt(0)],
[5, 'e', 0, 'e'.charCodeAt(0)],
[6, 'f', 0, 'f'.charCodeAt(0)],
[6, 'f', 0, 'f'.charCodeAt(0)]
]);
});
it('replaceCells', function(): void {
const line = new TestBufferLine(5);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.set(3, [4, 'd', 0, 'd'.charCodeAt(0)]);
line.set(4, [5, 'e', 0, 'e'.charCodeAt(0)]);
line.replaceCells(2, 4, [6, 'f', 0, 'f'.charCodeAt(0)]);
chai.expect(line.toArray()).eql([
[1, 'a', 0, 'a'.charCodeAt(0)],
[2, 'b', 0, 'b'.charCodeAt(0)],
[6, 'f', 0, 'f'.charCodeAt(0)],
[6, 'f', 0, 'f'.charCodeAt(0)],
[5, 'e', 0, 'e'.charCodeAt(0)]
]);
});
it('fill', function(): void {
const line = new TestBufferLine(5);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.set(3, [4, 'd', 0, 'd'.charCodeAt(0)]);
line.set(4, [5, 'e', 0, 'e'.charCodeAt(0)]);
line.fill([123, 'z', 0, 'z'.charCodeAt(0)]);
chai.expect(line.toArray()).eql([
[123, 'z', 0, 'z'.charCodeAt(0)],
[123, 'z', 0, 'z'.charCodeAt(0)],
[123, 'z', 0, 'z'.charCodeAt(0)],
[123, 'z', 0, 'z'.charCodeAt(0)],
[123, 'z', 0, 'z'.charCodeAt(0)]
]);
});
it('clone', function(): void {
const line = new TestBufferLine(5, null, true);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.set(3, [4, 'd', 0, 'd'.charCodeAt(0)]);
line.set(4, [5, 'e', 0, 'e'.charCodeAt(0)]);
const line2 = line.clone();
chai.expect(TestBufferLine.prototype.toArray.apply(line2)).eql(line.toArray());
chai.expect(line2.length).equals(line.length);
chai.expect(line2.isWrapped).equals(line.isWrapped);
});
it('copyFrom', function(): void {
const line = new TestBufferLine(5);
line.set(0, [1, 'a', 0, 'a'.charCodeAt(0)]);
line.set(1, [2, 'b', 0, 'b'.charCodeAt(0)]);
line.set(2, [3, 'c', 0, 'c'.charCodeAt(0)]);
line.set(3, [4, 'd', 0, 'd'.charCodeAt(0)]);
line.set(4, [5, 'e', 0, 'e'.charCodeAt(0)]);
const line2 = new TestBufferLine(5, [1, 'a', 0, 'a'.charCodeAt(0)], true);
line2.copyFrom(line);
chai.expect(line2.toArray()).eql(line.toArray());
chai.expect(line2.length).equals(line.length);
chai.expect(line2.isWrapped).equals(line.isWrapped);
});
it('should support combining chars', function(): void {
// CHAR_DATA_CODE_INDEX resembles current behavior in InputHandler.print
// --> set code to the last charCodeAt value of the string
// Note: needs to be fixed once the string pointer is in place
const line = new TestBufferLine(2, [1, 'e\u0301', 0, '\u0301'.charCodeAt(0)]);
chai.expect(line.toArray()).eql([[1, 'e\u0301', 0, '\u0301'.charCodeAt(0)], [1, 'e\u0301', 0, '\u0301'.charCodeAt(0)]]);
const line2 = new TestBufferLine(5, [1, 'a', 0, '\u0301'.charCodeAt(0)], true);
line2.copyFrom(line);
chai.expect(line2.toArray()).eql(line.toArray());
const line3 = line.clone();
chai.expect(TestBufferLine.prototype.toArray.apply(line3)).eql(line.toArray());
});
describe('resize', function(): void {
it('enlarge(false)', function(): void {
const line = new TestBufferLine(5, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)]);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('enlarge(true)', function(): void {
const line = new TestBufferLine(5, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], true);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(true) - should apply new size', function(): void {
const line = new TestBufferLine(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(5, [1, 'a', 0, 'a'.charCodeAt(0)], true);
chai.expect(line.toArray()).eql(Array(5).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) - should not apply new size', function(): void {
const line = new TestBufferLine(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(5, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) + shrink(false) - should not apply new size', function(): void {
const line = new TestBufferLine(20, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(5, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(20).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) + enlarge(false) to smaller than before', function(): void {
const line = new TestBufferLine(20, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(15, [1, 'a', 0, 'a'.charCodeAt(0)]);
chai.expect(line.toArray()).eql(Array(20).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) + enlarge(false) to bigger than before', function(): void {
const line = new TestBufferLine(20, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(25, [1, 'a', 0, 'a'.charCodeAt(0)]);
chai.expect(line.toArray()).eql(Array(25).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) + resize shrink=true should enforce shrinking', function(): void {
const line = new TestBufferLine(20, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], true);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('enlarge from 0 length', function(): void {
const line = new TestBufferLine(0, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink to 0 length', function(): void {
const line = new TestBufferLine(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(0, [1, 'a', 0, 'a'.charCodeAt(0)], true);
chai.expect(line.toArray()).eql(Array(0).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('shrink(false) to 0 and enlarge to different sizes', function(): void {
const line = new TestBufferLine(10, [1, 'a', 0, 'a'.charCodeAt(0)], false);
line.resize(0, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
line.resize(5, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
line.resize(7, [1, 'a', 0, 'a'.charCodeAt(0)], false);
chai.expect(line.toArray()).eql(Array(10).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
line.resize(7, [1, 'a', 0, 'a'.charCodeAt(0)], true);
chai.expect(line.toArray()).eql(Array(7).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
});
});
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