Abduqodiri Qurbonzoda
e63b405f58
(cherry picked from commit fc5c01b9a72498f9bd200817936a629689c0bff0)
55 lines
2.5 KiB
Kotlin
55 lines
2.5 KiB
Kotlin
/*
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* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
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* that can be found in the LICENSE file.
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*/
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package runtime.text.trim
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import kotlin.test.*
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/**
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* Tests correct conversions of floats/doubles along with trimming of leading/trailing whitespaces.
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* String.trim() trims all whitespaces (see kotlin/text/Strings.kt) while String.toFloat() uses
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* the same approach as java.lang.Float.parseFloat()
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*/
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@Test fun runTest() {
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convertToFloatingPoint()
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convertWithWhitespaces()
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trimWhitespaces()
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println("OK")
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}
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private fun convertToFloatingPoint() {
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assertEquals(expected = 3.14F, actual = " 3.14 ".toFloat(), message = "String float should be trimmed")
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assertEquals(expected = 3.14, actual = " 3.14 ".toDouble(), message = "String double should be trimmed")
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assertEquals(expected = 7.15F, actual = "\u0019 7.15 ".toFloat(), message = "String float should be trimmed")
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assertEquals(expected = 42.3, actual = "\n 42.3 ".toDouble(), message = "String double should be trimmed")
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}
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private fun convertWithWhitespaces() {
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val s = "\u0009 \u000A 2.71 \u000D"
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assertEquals(expected = 2.71F, actual = s.toFloat(),
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message = "String should be cleared of LF, CR, TAB and converted to Float")
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assertEquals(expected = 2.71, actual = s.toDouble(),
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message = "String should be cleared of LF, CR, TAB and converted to Double")
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// Special symbols should not be trimmed during String to Float/Double conversion
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assertFailsWith<NumberFormatException> { "\u202F3.14".toFloat() }
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assertFailsWith<NumberFormatException> { "\u20293.14".toDouble() }
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assertFailsWith<NumberFormatException> { "3.14\u200B".toDouble() }
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assertFailsWith<NumberFormatException> { "3.14\u200B ABC".toDouble() }
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}
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private fun trimWhitespaces() {
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assertEquals(expected = "String", actual = " String".trim(), message = "Trim leading spaces")
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assertEquals(expected = "String ", actual = " String ".trimStart(), message = "Trim start")
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assertEquals(expected = " String", actual = " String \t ".trimEnd(), message = "Trim end")
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assertEquals(expected = "String", actual = "\u0020 \u202FString\u2028\u2029".trim(),
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message = "Trim special whitespaces")
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assertEquals(expected = "\u1FFFString", actual = "\u00A0 \u1FFFString".trim(),
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message = "Trim special whitespace but should left a unicode symbol")
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assertEquals(expected = "String\tSTR", actual = " \nString\tSTR ".trim(), message = "Trim newline")
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}
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