stdlib: improve tests
This commit is contained in:
Denis Mekhanikov
committed by
Ilya Ryzhenkov
Ilya Ryzhenkov
parent
495967a573
commit
80493aa4e6
@@ -0,0 +1,62 @@
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package test.io
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import org.junit.Test as test
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import java.io.File
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import kotlin.test.assertEquals
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class FilesTest {
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test fun listFilesWithFilter() {
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val dir = File.createTempFile("temp", System.nanoTime().toString())
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dir.delete()
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dir.mkdir()
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File.createTempFile("temp1", ".kt", dir)
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File.createTempFile("temp2", ".java", dir)
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File.createTempFile("temp3", ".kt", dir)
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val result = dir.listFiles { it.getName().endsWith(".kt") }
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assertEquals(2, result!!.size)
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}
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test fun recurse() {
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val dir = File.createTempFile("temp", System.nanoTime().toString())
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dir.delete()
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var totalFiles = 0
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dir.recurse { totalFiles++ }
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assertEquals(1, totalFiles)
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dir.mkdir()
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File.createTempFile("temp", "1.kt", dir)
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File.createTempFile("temp", "2.java", dir)
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val subdir = File(dir, "subdir")
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subdir.mkdir()
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File(subdir, "3.txt").createNewFile()
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totalFiles = 0
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dir.recurse { totalFiles++ }
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assertEquals(5, totalFiles)
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if (subdir.setReadable(false)) {
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// On Windows, we can't make directory not readable, and setReadable() will return false
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totalFiles = 0
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dir.recurse { totalFiles++ }
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assertEquals(4, totalFiles)
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}
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}
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test fun relativePath() {
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val file1 = File("src")
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val file2 = File(file1, "kotlin")
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val file3 = File("test")
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assertEquals("kotlin", file1.relativePath(file2))
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assertEquals("", file1.relativePath(file1))
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assertEquals(file3.canonicalPath, file1.relativePath(file3))
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}
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}
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@@ -1,156 +0,0 @@
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package test.io
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import kotlin.test.*
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import kotlin.io.*
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import kotlin.util.*
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import java.io.*
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import java.util.*
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import org.junit.Test as test
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class IoTest(){
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test fun testLineIteratorWithManualClose() {
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val reader = sample().buffered()
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try {
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val list = reader.lines().toArrayList()
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assertEquals(arrayListOf("Hello", "World"), list)
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} finally {
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reader.close()
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}
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}
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fun sample(): Reader {
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return StringReader("Hello\nWorld");
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}
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test fun testLineIterator() {
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// TODO we should maybe zap the useLines approach as it encourages
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// use of iterators which don't close the underlying stream
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val list1 = sample().useLines{ it.toArrayList() }
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val list2 = sample().useLines<ArrayList<String>>{ it.toArrayList() }
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assertEquals(arrayListOf("Hello", "World"), list1)
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assertEquals(arrayListOf("Hello", "World"), list2)
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}
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test fun testForEach() {
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val list = ArrayList<String>()
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val reader = sample().buffered()
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reader.use{
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while (true) {
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val line = it.readLine()
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if (line != null)
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list.add(line)
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else
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break
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}
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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}
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test fun testForEachLine() {
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val list = ArrayList<String>()
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/* TODO would be nicer maybe to write this as
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reader.lines.forEach { ... }
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as we could one day maybe one day write that as
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for (line in reader.lines)
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if the for(elem in thing) {...} statement could act as syntax sugar for
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thing.forEach{ elem -> ... }
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if thing is not an Iterable/array/Iterator but has a suitable forEach method
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*/
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sample().forEachLine {
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list.add(it)
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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var count = 0
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sample().forEachLine {
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count += 1
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}
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assertEquals(2, count)
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}
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test fun testForEachLineFile() {
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val file = File.createTempFile("temp", System.nanoTime().toString())
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file.writeText("Hello\nWorld")
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val list = ArrayList<String>()
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file.forEachLine{
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list.add(it)
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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file.deleteOnExit()
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}
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test fun testListFiles() {
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val dir = File.createTempFile("temp", System.nanoTime().toString())
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dir.delete()
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dir.mkdir()
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File.createTempFile("temp", "1.kt", dir)
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File.createTempFile("temp", "2.java", dir)
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File.createTempFile("temp", "3.kt", dir)
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val result = dir.listFiles { it.getName().endsWith(".kt") }
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assertNotNull(result)
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assertEquals(result!!.size, 2)
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}
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test fun relativePath() {
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val file1 = File("src")
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val file2 = File(file1, "kotlin")
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val file3 = File("test")
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assertEquals("kotlin", file1.relativePath(file2))
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assertEquals("", file1.relativePath(file1))
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assertEquals(file3.canonicalPath, file1.relativePath(file3))
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}
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test fun listFiles() {
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val dir = File.createTempFile("temp", System.nanoTime().toString())
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dir.delete()
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dir.mkdir()
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File.createTempFile("temp", "1.kt", dir)
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File.createTempFile("temp", "2.java", dir)
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val subdir = File(dir, "subdir")
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subdir.mkdir()
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File(subdir, "3.txt").createNewFile()
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var totalFiles = 0
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dir.recurse { totalFiles++ }
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assertEquals(5, totalFiles)
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if (subdir.setReadable(false)) {
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// On Windows, we can't make directory not readable, and setReadable() will return false
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var totalFilesWithUnReadableDir = 0
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dir.recurse { totalFilesWithUnReadableDir++ }
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assertEquals(4, totalFilesWithUnReadableDir)
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}
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}
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test fun testAppendText() {
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val file = File.createTempFile("temp", System.nanoTime().toString())
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file.writeText("Hello\n")
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file.appendText("World")
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assertEquals("Hello\nWorld", file.readText())
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file.deleteOnExit()
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}
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}
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@@ -0,0 +1,149 @@
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package test.io
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import org.junit.Test as test
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import java.io.File
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import kotlin.test.assertEquals
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import java.io.Reader
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import java.io.StringReader
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import java.util.ArrayList
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fun sample(): Reader = StringReader("Hello\nWorld");
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class ReadWriteTest {
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test fun testAppendText() {
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val file = File.createTempFile("temp", System.nanoTime().toString())
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file.writeText("Hello\n")
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file.appendText("World")
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assertEquals("Hello\nWorld", file.readText())
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file.deleteOnExit()
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}
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test fun reader() {
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val list = ArrayList<String>()
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/* TODO would be nicer maybe to write this as
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reader.lines.forEach { ... }
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as we could one day maybe write that as
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for (line in reader.lines)
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if the for(elem in thing) {...} statement could act as syntax sugar for
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thing.forEach{ elem -> ... }
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if thing is not an Iterable/array/Iterator but has a suitable forEach method
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*/
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sample().forEachLine {
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list.add(it)
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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var reader = StringReader("")
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var c = 0
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reader.forEachLine { c++ }
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assertEquals(0, c)
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reader = StringReader(" ")
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reader.forEachLine { c++ }
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assertEquals(1, c)
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reader = StringReader(" \n")
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c = 0
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reader.forEachLine { c++ }
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assertEquals(1, c)
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reader = StringReader(" \n ")
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c = 0
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reader.forEachLine { c++ }
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assertEquals(2, c)
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}
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test fun file() {
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val file = File.createTempFile("temp", System.nanoTime().toString())
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file.writeText("Hello\nWorld")
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val list = ArrayList<String>()
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file.forEachLine{
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list.add(it)
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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file.writeText("")
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var c = 0
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file.forEachLine { c++ }
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assertEquals(0, c)
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file.writeText(" ")
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file.forEachLine { c++ }
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assertEquals(1, c)
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file.writeText(" \n")
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c = 0
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file.forEachLine { c++ }
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assertEquals(1, c)
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file.writeText(" \n ")
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c = 0
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file.forEachLine { c++ }
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assertEquals(2, c)
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file.deleteOnExit()
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}
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class LineIteratorTest {
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test fun useLines() {
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// TODO we should maybe zap the useLines approach as it encourages
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// use of iterators which don't close the underlying stream
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val list1 = sample().useLines { it.toArrayList() }
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val list2 = sample().useLines<ArrayList<String>>{ it.toArrayList() }
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assertEquals(arrayListOf("Hello", "World"), list1)
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assertEquals(arrayListOf("Hello", "World"), list2)
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}
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test fun manualClose() {
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val reader = sample().buffered()
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try {
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val list = reader.lines().toArrayList()
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assertEquals(arrayListOf("Hello", "World"), list)
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} finally {
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reader.close()
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}
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}
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test fun boundaryConditions() {
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var reader = StringReader("").buffered()
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assertEquals(ArrayList<String>(), reader.lines().toArrayList())
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reader.close()
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reader = StringReader(" ").buffered()
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assertEquals(arrayListOf(" "), reader.lines().toArrayList())
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reader.close()
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reader = StringReader(" \n").buffered()
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assertEquals(arrayListOf(" "), reader.lines().toArrayList())
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reader.close()
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reader = StringReader(" \n ").buffered()
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assertEquals(arrayListOf(" ", " "), reader.lines().toArrayList())
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reader.close()
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}
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}
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test fun testUse() {
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val list = ArrayList<String>()
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val reader = sample().buffered()
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reader.use {
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while (true) {
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val line = it.readLine()
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if (line != null)
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list.add(line)
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else
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break
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}
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}
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assertEquals(arrayListOf("Hello", "World"), list)
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}
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}
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