From d850474b0a82ee00d094990d9bd3392ae8cd9575 Mon Sep 17 00:00:00 2001 From: Allan Wang Date: Mon, 24 Dec 2018 22:00:41 -0500 Subject: Simplify color utils and fix tests, resolves #156 --- .../test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'core/src/test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt') diff --git a/core/src/test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt b/core/src/test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt index 1cce9ae..b9c200a 100644 --- a/core/src/test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt +++ b/core/src/test/kotlin/ca/allanwang/kau/utils/UtilsTest.kt @@ -31,6 +31,24 @@ class UtilsTest { assertEquals("#ffffff", Color.WHITE.toHexString(withAlpha = false, withHexPrefix = true).toLowerCase()) } + @Test + fun colorWithAlpha() { + val origColor = 0xFF123456.toInt() + assertEquals(0x00123456, origColor.withAlpha(0), "Failed to convert with alpha 0") + assertEquals(0x50123456, origColor.withAlpha(80), "Failed to convert with alpha 80") + assertEquals(0xFF123456.toInt(), origColor.withAlpha(255), "Failed to convert with alpha 255") + assertEquals(0xFF123456.toInt(), origColor.withAlpha(0xFF), "Failed to convert with alpha 0xFF") + assertEquals(Color.TRANSPARENT, Color.BLACK.withAlpha(0), "Failed to convert black to transparent") + } + + @Test + fun colorWithMinAlpha() { + val origColor = 0x80123456.toInt() + assertEquals(origColor, origColor.withMinAlpha(0), "Failed to convert with min alpha 0") + assertEquals(0xFA123456.toInt(), origColor.withMinAlpha(0xFA), "Failed to convert with min alpha 0xFA") + assertEquals(Color.BLUE, Color.BLUE.withMinAlpha(89), "Failed to convert blue with min alpha 89") + } + @Test fun rounding() { assertEquals("1.23", 1.23456f.round(2)) -- cgit v1.2.3