androidTest.androidx.compose.ui.geometry.RectTest.kt Maven / Gradle / Ivy
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Compose classes related to dimensions without units
/*
* Copyright 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.
*/
package androidx.compose.ui.geometry
import org.junit.Assert.assertEquals
import org.junit.Assert.assertFalse
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
import kotlin.test.assertTrue
@RunWith(JUnit4::class)
class RectTest {
companion object {
private const val DELTA = 0.01f
}
@Test
fun `rect accessors`() {
val r = Rect(1.0f, 3.0f, 5.0f, 7.0f)
assertEquals(1.0f, r.left, DELTA)
assertEquals(3.0f, r.top, DELTA)
assertEquals(5.0f, r.right, DELTA)
assertEquals(7.0f, r.bottom, DELTA)
}
@Test
fun `rect created by width and height`() {
val r = Rect(Offset(1.0f, 3.0f), Size(5.0f, 7.0f))
assertEquals(1.0f, r.left, DELTA)
assertEquals(3.0f, r.top, DELTA)
assertEquals(6.0f, r.right, DELTA)
assertEquals(10.0f, r.bottom, DELTA)
}
@Test
fun `rect intersection`() {
val r1 = Rect(0.0f, 0.0f, 100.0f, 100.0f)
val r2 = Rect(50.0f, 50.0f, 200.0f, 200.0f)
val r3 = r1.intersect(r2)
assertEquals(50.0f, r3.left, DELTA)
assertEquals(50.0f, r3.top, DELTA)
assertEquals(100.0f, r3.right, DELTA)
assertEquals(100.0f, r3.bottom, DELTA)
val r4 = r2.intersect(r1)
assertEquals(r3, r4)
}
@Test
fun `rect width`() {
assertEquals(210f, Rect(70f, 10f, 280f, 300f).width)
}
@Test
fun `rect height`() {
assertEquals(290f, Rect(70f, 10f, 280f, 300f).height)
}
@Test
fun `rect size`() {
assertEquals(
Size(210f, 290f),
Rect(70f, 10f, 280f, 300f).size
)
}
@Test
fun `rect infinite`() {
assertTrue(Rect(Float.POSITIVE_INFINITY, 10f, 200f, 500f).isInfinite)
assertTrue(Rect(10f, Float.POSITIVE_INFINITY, 200f, 500f).isInfinite)
assertTrue(Rect(10f, 200f, Float.POSITIVE_INFINITY, 500f).isInfinite)
assertTrue(Rect(10f, 200f, 500f, Float.POSITIVE_INFINITY).isInfinite)
assertFalse(Rect(0f, 1f, 2f, 3f).isInfinite)
}
@Test
fun `rect finite`() {
assertTrue(Rect(0f, 1f, 2f, 3f).isFinite)
assertFalse(Rect(0f, 1f, 2f, Float.POSITIVE_INFINITY).isFinite)
}
@Test
fun `rect isEmpty`() {
assertTrue(Rect(0f, 0f, 0f, 10f).isEmpty)
assertTrue(Rect(1f, 0f, 0f, 10f).isEmpty)
assertTrue(Rect(0f, 1f, 10f, 0f).isEmpty)
assertTrue(Rect(0f, 1f, 10f, 1f).isEmpty)
assertFalse(Rect(0f, 1f, 2f, 3f).isEmpty)
}
@Test
fun `rect translate offset`() {
val shifted = Rect(0f, 5f, 10f, 15f).translate(Offset(10f, 15f))
assertEquals(Rect(10f, 20f, 20f, 30f), shifted)
}
@Test
fun `rect translate`() {
val translated = Rect(0f, 5f, 10f, 15f).translate(10f, 15f)
assertEquals(Rect(10f, 20f, 20f, 30f), translated)
}
@Test
fun `rect inflate`() {
val inflated = Rect(5f, 10f, 10f, 20f).inflate(5f)
assertEquals(Rect(0f, 5f, 15f, 25f), inflated)
}
@Test
fun `rect deflate`() {
val deflated = Rect(0f, 5f, 15f, 25f).deflate(5f)
assertEquals(Rect(5f, 10f, 10f, 20f), deflated)
}
@Test
fun `rect intersect`() {
val intersected = Rect(0f, 0f, 20f, 20f).intersect(
Rect(10f, 10f, 30f, 30f)
)
assertEquals(Rect(10f, 10f, 20f, 20f), intersected)
}
@Test
fun `rect overlap`() {
val rect1 = Rect(0f, 5f, 10f, 15f)
val rect2 = Rect(5f, 10f, 15f, 20f)
assertTrue(rect1.overlaps(rect2))
assertTrue(rect2.overlaps(rect1))
}
@Test
fun `rect does not overlap`() {
val rect1 = Rect(0f, 5f, 10f, 15f)
val rect2 = Rect(10f, 5f, 20f, 15f)
assertFalse(rect1.overlaps(rect2))
assertFalse(rect2.overlaps(rect1))
}
@Test
fun `rect minDimension`() {
val rect = Rect(0f, 5f, 100f, 25f)
assertEquals(20f, rect.minDimension)
}
@Test
fun `rect maxDimension`() {
val rect = Rect(0f, 5f, 100f, 25f)
assertEquals(100f, rect.maxDimension)
}
@Test
fun `rect topLeft`() {
val rect = Rect(27f, 38f, 100f, 200f)
assertEquals(Offset(27f, 38f), rect.topLeft)
}
@Test
fun `rect topCenter`() {
val rect = Rect(100f, 15f, 200f, 300f)
assertEquals(Offset(150f, 15f), rect.topCenter)
}
@Test
fun `rect topRight`() {
val rect = Rect(100f, 15f, 200f, 300f)
assertEquals(Offset(200f, 15f), rect.topRight)
}
@Test
fun `rect centerLeft`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(100f, 155f), rect.centerLeft)
}
@Test
fun `rect center`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(150f, 155f), rect.center)
}
@Test
fun `rect centerRight`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(200f, 155f), rect.centerRight)
}
@Test
fun `rect bottomLeft`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(100f, 300f), rect.bottomLeft)
}
@Test
fun `rect bottomCenter`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(150f, 300f), rect.bottomCenter)
}
@Test
fun `rect bottomRight`() {
val rect = Rect(100f, 10f, 200f, 300f)
assertEquals(Offset(200f, 300f), rect.bottomRight)
}
@Test
fun `rect contains`() {
val rect = Rect(100f, 10f, 200f, 300f)
val offset = Offset(177f, 288f)
assertTrue(rect.contains(offset))
}
@Test
fun `rect does not contain`() {
val rect = Rect(100f, 10f, 200f, 300f)
val offset1 = Offset(201f, 150f)
assertFalse(rect.contains(offset1))
val offset2 = Offset(200f, 301f)
assertFalse(rect.contains(offset2))
}
@Test
fun `rect from offset and size`() {
val offset = Offset(220f, 300f)
val size = Size(80f, 200f)
assertEquals(Rect(220f, 300f, 300f, 500f), Rect(offset, size))
}
@Test
fun `rect from topleft and bottomRight`() {
val offset1 = Offset(27f, 38f)
val offset2 = Offset(130f, 280f)
assertEquals(Rect(27f, 38f, 130f, 280f), Rect(offset1, offset2))
}
@Test
fun `rect from center and radius`() {
val offset = Offset(100f, 50f)
val radius = 25f
assertEquals(Rect(75f, 25f, 125f, 75f), Rect(offset, radius))
}
@Test
fun `rect lerp`() {
val rect1 = Rect(0f, 0f, 100f, 100f)
val rect2 = Rect(50f, 50f, 200f, 200f)
assertEquals(Rect(25f, 25f, 150f, 150f), lerp(rect1, rect2, 0.5f))
}
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