android-platform-libcore/luni/src/test/java/tests/api/java/io/StringReaderTest.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package tests.api.java.io;

import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargets;
import dalvik.annotation.TestTargetNew;
import dalvik.annotation.TestLevel;

import java.io.IOException;
import java.io.StringReader;

@TestTargetClass(StringReader.class)
public class StringReaderTest extends junit.framework.TestCase {

    String testString = "This is a test string";

    StringReader sr;

    /**
     * @tests java.io.StringReader#StringReader(java.lang.String)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "StringReader",
        args = {java.lang.String.class}
    )
    public void test_ConstructorLjava_lang_String() {
        // Test for method java.io.StringReader(java.lang.String)
        try {
            new StringReader("Test string");
        } catch (Exception ee) {
            fail ("Exception " + ee.getMessage() + " does not expected in this case");
        }
    }

    /**
     * @tests java.io.StringReader#close()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "close",
        args = {}
    )
    public void test_close() {
        // Test for method void java.io.StringReader.close()
        try {
            sr = new StringReader(testString);
            sr.close();
            char[] buf = new char[10];
            sr.read(buf, 0, 2);
            fail("Close failed");
        } catch (java.io.IOException e) {
            return;
        }
    }

    /**
     * @throws IOException
     * @tests java.io.StringReader#mark(int)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "mark",
        args = {int.class}
    )
    public void test_markI() throws IOException {
        sr = new StringReader(testString);
        sr.skip(5);
        sr.mark(0);
        sr.skip(5);
        sr.reset();
        char[] buf = new char[10];
        sr.read(buf, 0, 2);
        assertTrue("Failed to return to mark", new String(buf, 0, 2)
                .equals(testString.substring(5, 7)));
        try {
            sr.mark(-1);
            fail("IllegalArgumentException not thrown!");
        } catch (IllegalArgumentException e) {
            // expected
        }
    }

    /**
     * @tests java.io.StringReader#markSupported()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "markSupported",
        args = {}
    )
    public void test_markSupported() {
        // Test for method boolean java.io.StringReader.markSupported()

        sr = new StringReader(testString);
        assertTrue("markSupported returned false", sr.markSupported());
    }

    /**
     * @tests java.io.StringReader#read()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "read",
        args = {}
    )
    public void test_read() {
        // Test for method int java.io.StringReader.read()
        try {
            sr = new StringReader(testString);
            int r = sr.read();
            assertEquals("Failed to read char", 'T', r);
            sr = new StringReader(new String(new char[] { '\u8765' }));
            assertTrue("Wrong double byte char", sr.read() == '\u8765');
        } catch (Exception e) {
            fail("Exception during read test : " + e.getMessage());
        }
    }

    /**
     * @tests java.io.StringReader#read(char[], int, int)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "read",
        args = {char[].class, int.class, int.class}
    )
    public void test_read$CII() throws Exception {
        // Test for method int java.io.StringReader.read(char [], int, int)
        try {
            sr = new StringReader(testString);
            char[] buf = new char[testString.length()];
            int r = sr.read(buf, 0, testString.length());
            assertTrue("Failed to read chars", r == testString.length());
            assertTrue("Read chars incorrectly", new String(buf, 0, r)
                    .equals(testString));
        } catch (Exception e) {
            fail("Exception during read test : " + e.getMessage());
        }

        char[] buf = new char[testString.length()];
        sr = new StringReader(testString);
        try {
            sr.read(buf, 0, -1);
            fail("IndexOutOfBoundsException was not thrown");
        } catch (IndexOutOfBoundsException e) {
            // Expected
        }
        try {
            sr.read(buf, -1, 1);
            fail("IndexOutOfBoundsException was not thrown");
        } catch (IndexOutOfBoundsException e) {
            // Expected
        }
        try {
            sr.read(buf, 1, testString.length());
            fail("IndexOutOfBoundsException was not thrown");
        } catch (IndexOutOfBoundsException e) {
            // Expected
        }
    }

    /**
     * @tests java.io.StringReader#ready()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "ready",
        args = {}
    )
    public void test_ready() {
        // Test for method boolean java.io.StringReader.ready()
        try {
            sr = new StringReader(testString);
            assertTrue("Steam not ready", sr.ready());
            sr.close();
            int r = 0;
            try {
                sr.ready();
            } catch (IOException e) {
                r = 1;
            }
            assertEquals("Expected IOException not thrown in read()", 1, r);
        } catch (IOException e) {
            fail("IOException during ready test : " + e.getMessage());
        }
    }

    /**
     * @tests java.io.StringReader#reset()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "reset",
        args = {}
    )
    public void test_reset() {
        // Test for method void java.io.StringReader.reset()
        try {
            sr = new StringReader(testString);
            sr.skip(5);
            sr.mark(0);
            sr.skip(5);
            sr.reset();
            char[] buf = new char[10];
            sr.read(buf, 0, 2);
            assertTrue("Failed to reset properly", new String(buf, 0, 2)
                    .equals(testString.substring(5, 7)));
        } catch (Exception e) {
            fail("Exception during reset test : " + e.getMessage());
        }
    }

    /**
     * @tests java.io.StringReader#skip(long)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException will never be thrown for this implementation.",
        method = "skip",
        args = {long.class}
    )
    public void test_skipJ() {
        // Test for method long java.io.StringReader.skip(long)
        try {
            sr = new StringReader(testString);
            sr.skip(5);
            char[] buf = new char[10];
            sr.read(buf, 0, 2);
            assertTrue("Failed to skip properly", new String(buf, 0, 2)
                    .equals(testString.substring(5, 7)));
        } catch (Exception e) {
            fail("Exception during skip test : " + e.getMessage());
        }
    }

    /**
     * Sets up the fixture, for example, open a network connection. This method
     * is called before a test is executed.
     */
    protected void setUp() {
    }

    /**
     * Tears down the fixture, for example, close a network connection. This
     * method is called after a test is executed.
     */
    protected void tearDown() {

        try {
            sr.close();
        } catch (Exception e) {
        }
    }
}