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resize should not alter length if shrink=false

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This commit is contained in:
Jörg Breitbart
2018-10-09 21:17:33 +02:00
parent febc3ba2b8
commit 0065682bd7
2 changed files with 78 additions and 36 deletions
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src/BufferLine.test.ts
+66 -26
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@@ -133,31 +133,71 @@ describe('BufferLine', function(): void {
const line3 = line.clone();
chai.expect(TestBufferLine.prototype.toArray.apply(line3)).eql(line.toArray());
});
it('resize enlarge', 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('resize shrink(true)', 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('resize shrink(false)', 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(5).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('resize shrink(false) + shrink(false)', 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(5).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
});
it('resize shrink(false) + enlarge', 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(15).fill([1, 'a', 0, 'a'.charCodeAt(0)]));
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)]));
});
});
});