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// Copyright (C) 2018 The Android Open Source Project
//
// 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.
import {TPTimeSpan} from '../common/time';
import {getPattern, TickGenerator, TickType} from './gridline_helper';
test('gridline helper to have sensible step sizes', () => {
expect(getPattern(1n)).toEqual([1n, '|']);
expect(getPattern(2n)).toEqual([2n, '|:']);
expect(getPattern(3n)).toEqual([5n, '|....']);
expect(getPattern(4n)).toEqual([5n, '|....']);
expect(getPattern(5n)).toEqual([5n, '|....']);
expect(getPattern(7n)).toEqual([10n, '|....:....']);
expect(getPattern(10n)).toEqual([10n, '|....:....']);
expect(getPattern(20n)).toEqual([20n, '|.:.']);
expect(getPattern(50n)).toEqual([50n, '|....']);
expect(getPattern(100n)).toEqual([100n, '|....:....']);
});
describe('TickGenerator', () => {
it('can generate ticks with span starting at origin', () => {
const tickGen = new TickGenerator(new TPTimeSpan(0n, 10n), 1);
const expected = [
{type: TickType.MAJOR, time: 0n},
{type: TickType.MINOR, time: 1n},
{type: TickType.MINOR, time: 2n},
{type: TickType.MINOR, time: 3n},
{type: TickType.MINOR, time: 4n},
{type: TickType.MEDIUM, time: 5n},
{type: TickType.MINOR, time: 6n},
{type: TickType.MINOR, time: 7n},
{type: TickType.MINOR, time: 8n},
{type: TickType.MINOR, time: 9n},
];
const actual = Array.from(tickGen!);
expect(actual).toStrictEqual(expected);
expect(tickGen!.digits).toEqual(8);
});
it('can generate ticks when span has an offset', () => {
const tickGen = new TickGenerator(new TPTimeSpan(10n, 20n), 1);
const expected = [
{type: TickType.MAJOR, time: 10n},
{type: TickType.MINOR, time: 11n},
{type: TickType.MINOR, time: 12n},
{type: TickType.MINOR, time: 13n},
{type: TickType.MINOR, time: 14n},
{type: TickType.MEDIUM, time: 15n},
{type: TickType.MINOR, time: 16n},
{type: TickType.MINOR, time: 17n},
{type: TickType.MINOR, time: 18n},
{type: TickType.MINOR, time: 19n},
];
const actual = Array.from(tickGen!);
expect(actual).toStrictEqual(expected);
expect(tickGen!.digits).toEqual(8);
});
it('can generate ticks when span is large', () => {
const tickGen =
new TickGenerator(new TPTimeSpan(1000000000n, 2000000000n), 1);
const expected = [
{type: TickType.MAJOR, time: 1000000000n},
{type: TickType.MINOR, time: 1100000000n},
{type: TickType.MINOR, time: 1200000000n},
{type: TickType.MINOR, time: 1300000000n},
{type: TickType.MINOR, time: 1400000000n},
{type: TickType.MEDIUM, time: 1500000000n},
{type: TickType.MINOR, time: 1600000000n},
{type: TickType.MINOR, time: 1700000000n},
{type: TickType.MINOR, time: 1800000000n},
{type: TickType.MINOR, time: 1900000000n},
];
const actual = Array.from(tickGen!);
expect(actual).toStrictEqual(expected);
expect(tickGen!.digits).toEqual(0);
});
it('throws an error when timespan duration is 0', () => {
expect(() => {
new TickGenerator(new TPTimeSpan(0n, 0n), 1);
}).toThrow(Error);
});
it('throws an error when max ticks is 0', () => {
expect(() => {
new TickGenerator(new TPTimeSpan(0n, 1n), 0);
}).toThrow(Error);
});
});
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