Merge "fix(non linear font scaling): fix test from timing out." into udc-dev (6e88b696) · Commits · e / os / android_frameworks_base

core/tests/coretests/src/android/content/res/FontScaleConverterFactoryTest.kt

+36 −3

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@ import kotlin.math.ceil
		import kotlin.math.floor
		import org.junit.Test
		import org.junit.runner.RunWith
		import kotlin.random.Random.Default.nextFloat

		@Presubmit
		@RunWith(AndroidJUnit4::class)
		@@ -124,10 +125,12 @@ class FontScaleConverterFactoryTest {
		@LargeTest
		@Test
		fun allFeasibleScalesAndConversionsDoNotCrash() {
		generateSequenceOfFractions(-10f..10f, step = 0.01f)
		.mapNotNull{ FontScaleConverterFactory.forScale(it) }!!
		generateSequenceOfFractions(-10f..10f, step = 0.1f)
		.fuzzFractions()
		.mapNotNull{ FontScaleConverterFactory.forScale(it) }
		.flatMap{ table ->
		generateSequenceOfFractions(-2000f..2000f, step = 0.01f)
		generateSequenceOfFractions(-2000f..2000f, step = 0.1f)
		.fuzzFractions()
		.map{ Pair(table, it) }
		}
		.forEach { (table, sp) ->
		@@ -172,6 +175,30 @@ class FontScaleConverterFactoryTest {
		assertThat(fractions).doesNotContain(-.35f)
		}

		@Test
		fun testFuzzFractions() {
		val numFuzzedFractions = 6
		val fractions = generateSequenceOfFractions(-1000f..1000f, step = 0.1f)
		.fuzzFractions()
		.toList()
		fractions.forEach {
		assertThat(it).isAtLeast(-1000f)
		assertThat(it).isLessThan(1001f)
		}

		val numGeneratedFractions = 1000 * 2 * 10 + 1 // Don't forget the 0 in the middle!
		assertThat(fractions).hasSize(numGeneratedFractions * numFuzzedFractions)

		assertThat(fractions).contains(100f)
		assertThat(fractions).contains(500.1f)
		assertThat(fractions).contains(500.2f)
		assertThat(fractions).contains(0.2f)
		assertThat(fractions).contains(0f)
		assertThat(fractions).contains(-10f)
		assertThat(fractions).contains(-10f)
		assertThat(fractions).contains(-10.3f)
		}

		companion object {
		private const val CONVERSION_TOLERANCE = 0.05f
		}
		@@ -188,3 +215,9 @@ fun generateSequenceOfFractions(
		.takeWhile { it <= endInclusive }
		.map{ it.toFloat() / multiplier }
		}

		private fun Sequence<Float>.fuzzFractions(): Sequence<Float> {
		return flatMap { i ->
		listOf(i, i + 0.01f, i + 0.054f, i + 0.099f, i + nextFloat(), i + nextFloat())
		}
		}