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/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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41628
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* @bug 8131023 8167461
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* @summary Verify that the user's code can read System.in
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* @build KullaTesting TestingInputStream
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* @run testng UserInputTest
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*/
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import java.io.IOException;
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import java.io.InputStream;
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import org.testng.annotations.Test;
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@Test
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public class UserInputTest extends KullaTesting {
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public void testReadInput() {
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setInput("AB\n");
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assertEval("System.in.read()", "65");
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setInput("CD\n");
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assertEval("System.in.read()", "67");
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}
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public void testScanner() {
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assertEval("import java.util.Scanner;");
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assertEval("Scanner s = new Scanner(System.in);");
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setInput("12\n");
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assertEval("s.nextInt();", "12");
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}
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public void testClose() {
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setInput(new InputStream() {
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private final byte[] data = new byte[] {0, 1, 2};
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private int cursor;
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@Override public int read() throws IOException {
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if (cursor < data.length) {
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return data[cursor++];
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} else {
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return -1;
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}
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}
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});
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assertEval("int read;", "0");
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assertEval("System.in.read();", "0");
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assertEval("System.in.read();", "1");
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assertEval("System.in.read();", "2");
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assertEval("System.in.read();", "-1");
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assertEval("System.in.read();", "-1");
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assertEval("System.in.read();", "-1");
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}
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public void testException() {
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setInput(new InputStream() {
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private final int[] data = new int[] {0, 1, -2, 2};
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private int cursor;
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@Override public int read() throws IOException {
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if (cursor < data.length) {
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int d = data[cursor++];
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if (d == (-2)) {
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throw new IOException("Crashed");
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}
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return d;
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} else {
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return -1;
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}
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}
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});
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assertEval("int read;", "0");
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assertEval("System.in.read();", "0");
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assertEval("System.in.read();", "1");
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assertEval("java.io.IOException e;");
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assertEval("try { System.in.read(); } catch (java.io.IOException exc) { e = exc; }");
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assertEval("e", "java.io.IOException: Crashed");
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assertEval("System.in.read();", "2");
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assertEval("System.in.read();", "-1");
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}
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}
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