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/* __ *\
** ________ ___ / / ___ __ ____ Scala.js Test Suite **
** / __/ __// _ | / / / _ | __ / // __/ (c) 2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ |/_// /_\ \ http://scala-js.org/ **
** /____/\___/_/ |_/____/_/ | |__/ /____/ **
** |/____/ **
\* */
package scala.scalajs.testsuite.javalib
import scala.annotation.tailrec
import java.io._
import scala.scalajs.js
import scala.scalajs.js.JSConverters._
import org.scalajs.jasminetest.JasmineTest
/** Tests for our implementation of java.io._ reader classes */
object ReadersTest extends JasmineTest {
describe("java.io.StringReader") {
val str = "asdf"
def newReader = new StringReader(str)
it("should provide read()") {
val r = newReader
for (c <- str) {
expect(r.read().toChar).toEqual(c)
}
expect(r.read()).toEqual(-1)
}
it("should provide read(buf: Array[Char], off: Int, len: Int)") {
val r = newReader
val buf = new Array[Char](10)
expect(r.read(buf, 2, 8)).toBe(4)
expect(buf.map(_.toInt).toJSArray).toEqual(
js.Array[Int](0,0,'a','s','d','f',0,0,0,0))
}
it("should provide read(java.nio.CharBuffer)") {
val r = newReader
val buf0 = java.nio.CharBuffer.allocate(25)
buf0.position(3)
val buf = buf0.slice()
buf.position(4)
buf.limit(14)
expect(r.read(buf)).toBe(4)
expect(buf.position()).toBe(8)
buf.flip()
expect(buf.toString().map(_.toInt).toJSArray).toEqual(
js.Array[Int](0, 0, 0, 0, 'a', 's', 'd', 'f'))
}
it("should provide ready") {
val r = newReader
for (c <- str) {
expect(r.ready()).toBeTruthy
expect(r.read().toChar).toEqual(c)
}
expect(r.ready()).toBeFalsy
expect(r.read()).toEqual(-1)
}
it("should provide mark/reset") {
val r = newReader
r.mark(str.length)
for (c <- str) {
expect(r.read().toChar).toEqual(c)
}
expect(r.read()).toEqual(-1)
r.reset()
for (c <- str) {
expect(r.read().toChar).toEqual(c)
}
expect(r.read()).toEqual(-1)
}
it("should provide skip") {
val r = newReader
expect(r.read()).toEqual('a')
expect(r.skip(2L).toInt).toBe(2)
expect(r.read()).toEqual('f')
expect(r.read()).toEqual(-1)
}
it("should provide close") {
val r = newReader
r.close()
expect(() => r.read()).toThrow
}
it("should support marking") {
expect(newReader.markSupported).toBeTruthy
}
}
describe("java.io.BufferedReader") {
val str = "line1\nline2\r\n\nline4\rline5"
def newReader = new BufferedReader(new StringReader(str), 3)
it("should provide read()") {
val r = newReader
for (c <- str) {
expect(r.read().toChar).toEqual(c)
}
expect(r.read()).toEqual(-1)
}
it("should provide read(cbuf)") {
var read = 0
val r = newReader
val buf = new Array[Char](15)
// twice to force filling internal buffer
for (_ <- 0 to 1) {
val len = r.read(buf)
expect(len).toBeGreaterThan(0)
for (i <- 0 until len)
expect(buf(i)).toEqual(str.charAt(i+read))
read += len
}
}
it("should provide read(cbuf, off, len)") {
var read = 0
val r = newReader
val buf = new Array[Char](15)
// twice to force filling internal buffer
for (_ <- 0 to 1) {
val len = r.read(buf, 1, 10)
expect(len).toBeGreaterThan(0)
expect(len).toBeLessThan(11)
for (i <- 0 until len)
expect(buf(i+1)).toEqual(str.charAt(i+read))
read += len
}
}
it("should provide mark/reset") {
val r = newReader
expect(r.read()).toEqual('l')
// force moving and resizing buffer
r.mark(10)
for (i <- 0 until 10) {
expect(r.read()).toEqual(str.charAt(i+1))
}
r.reset()
for (i <- 1 until str.length) {
expect(r.read()).toEqual(str.charAt(i))
}
}
it("should provide readLine") {
val r = newReader
expect(r.readLine()).toEqual("line1")
expect(r.readLine()).toEqual("line2")
expect(r.readLine()).toEqual("")
expect(r.readLine()).toEqual("line4")
expect(r.readLine()).toEqual("line5")
expect(r.readLine()).toEqual(null)
}
it("should readLine on an empty stream") {
val r = new BufferedReader(new StringReader(""))
expect(r.readLine()).toEqual(null)
}
it("should readline with empty lines only") {
val r = new BufferedReader(new StringReader("\n\r\n\r\r\n"), 1)
for (_ <- 1 to 4)
expect(r.readLine()).toEqual("")
expect(r.readLine()).toEqual(null)
}
it("should support marking") {
expect(newReader.markSupported).toBeTruthy
}
}
describe("java.io.InputStreamReader") {
it("should read UTF8") {
val buf = Array[Byte](72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100,
46, -29, -127, -109, -29, -126, -109, -29, -127, -85, -29, -127, -95,
-29, -127, -81, -26, -105, -91, -26, -100, -84, -24, -86, -98, -29,
-126, -110, -24, -86, -83, -29, -126, -127, -29, -127, -66, -29, -127,
-103, -29, -127, -117, -29, -128, -126)
val r = new InputStreamReader(new ByteArrayInputStream(buf))
def expectRead(str: String) = {
val buf = new Array[Char](str.length)
@tailrec
def readAll(readSoFar: Int): Int = {
if (readSoFar == buf.length) readSoFar
else {
val newlyRead = r.read(buf, readSoFar, buf.length - readSoFar)
if (newlyRead == -1) readSoFar
else readAll(readSoFar + newlyRead)
}
}
expect(readAll(0)).toBe(str.length)
expect(new String(buf)).toEqual(str)
}
expectRead("Hello World.")
expectRead("こんにちは")
expectRead("日本語を読めますか。")
expect(r.read()).toBe(-1)
}
}
}
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