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Fix cursor movement when swapping buffers

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This commit is contained in:
Jeff Smith
2018-11-16 14:33:37 -06:00
parent e4e5b966da
commit a5894ee234
4 changed files with 103 additions and 12 deletions
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src/InputHandler.test.ts
+47 -1
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@@ -6,7 +6,7 @@
import { assert, expect } from 'chai';
import { InputHandler } from './InputHandler';
import { MockInputHandlingTerminal } from './utils/TestUtils.test';
import { NULL_CELL_CHAR, NULL_CELL_CODE, NULL_CELL_WIDTH, CHAR_DATA_CHAR_INDEX } from './Buffer';
import { NULL_CELL_CHAR, NULL_CELL_CODE, NULL_CELL_WIDTH, CHAR_DATA_CHAR_INDEX, CHAR_DATA_ATTR_INDEX, DEFAULT_ATTR } from './Buffer';
import { Terminal } from './Terminal';
import { IBufferLine } from './Types';
@@ -506,4 +506,50 @@ describe('InputHandler', () => {
inputHandler.print(String.fromCharCode(0x200B), 0, 1);
});
});
describe('alt screen', () => {
let term: Terminal;
let handler: InputHandler;
function lineContent(line: IBufferLine): string {
let content = '';
for (let i = 0; i < line.length; ++i) content += line.get(i)[CHAR_DATA_CHAR_INDEX];
return content;
}
beforeEach(() => {
term = new Terminal();
handler = new InputHandler(term);
});
it('should handle DECSET/DECRST 47 (alt screen buffer)', () => {
handler.parse('\x1b[?47h\r\n\x1b[31mJUNK\x1b[?47lTEST');
expect(lineContent(term.buffer.lines.get(0))).to.equal(Array(term.cols + 1).join(' '));
expect(lineContent(term.buffer.lines.get(1))).to.equal(' TEST' + Array(term.cols - 7).join(' '));
// Text color of 'TEST' should be red
expect((term.buffer.lines.get(1).get(4)[CHAR_DATA_ATTR_INDEX] >> 9) & 0x1ff).to.equal(1);
});
it('should handle DECSET/DECRST 1047 (alt screen buffer)', () => {
handler.parse('\x1b[?1047h\r\n\x1b[31mJUNK\x1b[?1047lTEST');
expect(lineContent(term.buffer.lines.get(0))).to.equal(Array(term.cols + 1).join(' '));
expect(lineContent(term.buffer.lines.get(1))).to.equal(' TEST' + Array(term.cols - 7).join(' '));
// Text color of 'TEST' should be red
expect((term.buffer.lines.get(1).get(4)[CHAR_DATA_ATTR_INDEX] >> 9) & 0x1ff).to.equal(1);
});
it('should handle DECSET/DECRST 1048 (alt screen cursor)', () => {
handler.parse('\x1b[?1048h\r\n\x1b[31mJUNK\x1b[?1048lTEST');
expect(lineContent(term.buffer.lines.get(0))).to.equal('TEST' + Array(term.cols - 3).join(' '));
expect(lineContent(term.buffer.lines.get(1))).to.equal('JUNK' + Array(term.cols - 3).join(' '));
// Text color of 'TEST' should be default
expect(term.buffer.lines.get(0).get(0)[CHAR_DATA_ATTR_INDEX]).to.equal(DEFAULT_ATTR);
// Text color of 'JUNK' should be red
expect((term.buffer.lines.get(1).get(0)[CHAR_DATA_ATTR_INDEX] >> 9) & 0x1ff).to.equal(1);
});
it('should handle DECSET/DECRST 1049 (alt screen buffer+cursor)', () => {
handler.parse('\x1b[?1049h\r\n\x1b[31mJUNK\x1b[?1049lTEST');
expect(lineContent(term.buffer.lines.get(0))).to.equal('TEST' + Array(term.cols - 3).join(' '));
expect(lineContent(term.buffer.lines.get(1))).to.equal(Array(term.cols + 1).join(' '));
// Text color of 'TEST' should be default
expect(term.buffer.lines.get(0).get(0)[CHAR_DATA_ATTR_INDEX]).to.equal(DEFAULT_ATTR);
});
});
});