1 /* <lambda>null2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.compose.test.subjects 18 19 import androidx.compose.ui.test.assertIsEqualTo 20 import androidx.compose.ui.unit.Dp 21 import androidx.compose.ui.unit.DpOffset 22 import com.google.common.truth.FailureMetadata 23 import com.google.common.truth.Subject 24 import com.google.common.truth.Subject.Factory 25 import com.google.common.truth.Truth.assertAbout 26 27 /** Assert on a [DpOffset]. */ 28 fun assertThat(dpOffset: DpOffset): DpOffsetSubject { 29 return assertAbout(DpOffsetSubject.dpOffsets()).that(dpOffset) 30 } 31 32 /** A Truth subject to assert on [DpOffset] with some tolerance. Inspired by FloatSubject. */ 33 class DpOffsetSubject( 34 metadata: FailureMetadata, 35 private val actual: DpOffset, 36 ) : Subject(metadata, actual) { isWithinnull37 fun isWithin(tolerance: Dp): TolerantDpOffsetComparison { 38 return object : TolerantDpOffsetComparison { 39 override fun of(expected: DpOffset) { 40 actual.x.assertIsEqualTo(expected.x, "offset.x", tolerance) 41 actual.y.assertIsEqualTo(expected.y, "offset.y", tolerance) 42 } 43 } 44 } 45 46 interface TolerantDpOffsetComparison { ofnull47 fun of(expected: DpOffset) 48 } 49 50 companion object { 51 val DefaultTolerance = Dp(.5f) 52 53 fun dpOffsets() = 54 Factory<DpOffsetSubject, DpOffset> { metadata, actual -> 55 DpOffsetSubject(metadata, actual) 56 } 57 } 58 } 59