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/*
* ***************************************************************************
* Copyright 2016 straightway
*
* 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.
* ***************************************************************************
*
*/
package straightway.units
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Test
import straightway.numbers.times
class UnitScaleTest {
@Test
fun reciproke_timesOriginal_isUni() =
assertEquals(1.0, kilo.magnitude * kilo.reciprocal.magnitude)
@Test
fun construction_withNonPredefinedMagnitude_autoCreatesPrefix() =
assertEquals("[10000]", UnitScale(10000).prefix)
@Test
fun construction_withPredefinedMagnitude_autoUsesPredefinedPrefix() =
assertEquals("k", UnitScale(1000).prefix)
@Test
fun construction_withPredefinedMagnitudeDouble_autoUsesPredefinedPrefix() =
assertEquals("k", UnitScale(1000.0).prefix)
@Test
fun scalingAUnit() =
assertEquals(kilo, kilo(meter).scale)
@Test
fun scalingAUnit_twice() =
assertEquals(mega, kilo(kilo(one)).scale)
}