ui/src/frontend/time_scale_unittest.ts

// 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 {TimeScale} from './time_scale';

test('time scale to work', () => {
  const scale = new TimeScale([0, 100], [200, 1000]);

  expect(scale.msToPx(0)).toEqual(200);
  expect(scale.msToPx(100)).toEqual(1000);
  expect(scale.msToPx(50)).toEqual(600);

  expect(scale.pxToMs(200)).toEqual(0);
  expect(scale.pxToMs(1000)).toEqual(100);
  expect(scale.pxToMs(600)).toEqual(50);

  expect(scale.deltaPxToDurationMs(400)).toEqual(50);
});


test('time scale to be updatable', () => {
  const scale = new TimeScale([0, 100], [100, 1000]);

  expect(scale.msToPx(0)).toEqual(100);

  scale.setLimitsPx(200, 1000);
  expect(scale.msToPx(0)).toEqual(200);
  expect(scale.msToPx(100)).toEqual(1000);

  scale.setLimitsMs(0, 200);
  expect(scale.msToPx(0)).toEqual(200);
  expect(scale.msToPx(100)).toEqual(600);
  expect(scale.msToPx(200)).toEqual(1000);
});