android-platform-libcore/luni/src/test/java/tests/api/java/util/StringTokenizerTest.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.util;

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

import java.util.NoSuchElementException;
import java.util.StringTokenizer;

@TestTargetClass(StringTokenizer.class)
public class StringTokenizerTest extends junit.framework.TestCase {

    /**
     * @tests java.util.StringTokenizer#StringTokenizer(java.lang.String)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "StringTokenizer",
        args = {java.lang.String.class}
    )
    public void test_ConstructorLjava_lang_String() {
        // Test for method java.util.StringTokenizer(java.lang.String)
        try {
            new StringTokenizer(null);
            fail("NullPointerException is not thrown.");
        } catch(NullPointerException npe) {
          //expected
        }
    }

    /**
     * @tests java.util.StringTokenizer#StringTokenizer(java.lang.String,
     *        java.lang.String)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "StringTokenizer",
        args = {java.lang.String.class, java.lang.String.class}
    )
    public void test_ConstructorLjava_lang_StringLjava_lang_String() {
        // Test for method java.util.StringTokenizer(java.lang.String,
        // java.lang.String)
        StringTokenizer st = new StringTokenizer("This:is:a:test:String", ":");
        assertTrue("Created incorrect tokenizer", st.countTokens() == 5
                && (st.nextElement().equals("This")));
        st = new StringTokenizer("This:is:a:test:String", null);

        try {
            new StringTokenizer(null, ":");
            fail("NullPointerException expected");
        } catch (NullPointerException e) {
            //expected
        }
    }

    /**
     * @tests java.util.StringTokenizer#StringTokenizer(java.lang.String,
     *        java.lang.String, boolean)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "StringTokenizer",
        args = {java.lang.String.class, java.lang.String.class, boolean.class}
    )
    public void test_ConstructorLjava_lang_StringLjava_lang_StringZ() {
        // Test for method java.util.StringTokenizer(java.lang.String,
        // java.lang.String, boolean)
        StringTokenizer st = new StringTokenizer("This:is:a:test:String", ":",
                true);
        st.nextElement();
        assertTrue("Created incorrect tokenizer", st.countTokens() == 8
                && (st.nextElement().equals(":")));
        st = new StringTokenizer("This:is:a:test:String", null, true);
        st = new StringTokenizer("This:is:a:test:String", null, false);

        try {
            new StringTokenizer(null, ":", true);
            fail("NullPointerException expected");
        } catch (NullPointerException e) {
            //expected
        }
    }

    /**
     * @tests java.util.StringTokenizer#countTokens()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "countTokens",
        args = {}
    )
    public void test_countTokens() {
        // Test for method int java.util.StringTokenizer.countTokens()
        StringTokenizer st = new StringTokenizer("This is a test String");

        assertEquals("Incorrect token count returned", 5, st.countTokens());
    }

    /**
     * @tests java.util.StringTokenizer#hasMoreElements()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "hasMoreElements",
        args = {}
    )
    public void test_hasMoreElements() {
        // Test for method boolean java.util.StringTokenizer.hasMoreElements()

        StringTokenizer st = new StringTokenizer("This is a test String");
        st.nextElement();
        assertTrue("hasMoreElements returned incorrect value", st
                .hasMoreElements());
        st.nextElement();
        st.nextElement();
        st.nextElement();
        st.nextElement();
        assertTrue("hasMoreElements returned incorrect value", !st
                .hasMoreElements());
    }

    /**
     * @tests java.util.StringTokenizer#hasMoreTokens()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "hasMoreTokens",
        args = {}
    )
    public void test_hasMoreTokens() {
        // Test for method boolean java.util.StringTokenizer.hasMoreTokens()
        StringTokenizer st = new StringTokenizer("This is a test String");
        for (int counter = 0; counter < 5; counter++) {
            assertTrue(
                    "StringTokenizer incorrectly reports it has no more tokens",
                    st.hasMoreTokens());
            st.nextToken();
        }
        assertTrue("StringTokenizer incorrectly reports it has more tokens",
                !st.hasMoreTokens());
    }

    /**
     * @tests java.util.StringTokenizer#nextElement()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "nextElement",
        args = {}
    )
    public void test_nextElement() {
        // Test for method java.lang.Object
        // java.util.StringTokenizer.nextElement()
        StringTokenizer st = new StringTokenizer("This is a test String");
        assertEquals("nextElement returned incorrect value", "This", ((String) st
                .nextElement()));
        assertEquals("nextElement returned incorrect value", "is", ((String) st
                .nextElement()));
        assertEquals("nextElement returned incorrect value", "a", ((String) st
                .nextElement()));
        assertEquals("nextElement returned incorrect value", "test", ((String) st
                .nextElement()));
        assertEquals("nextElement returned incorrect value", "String", ((String) st
                .nextElement()));
        try {
            st.nextElement();
            fail(
                    "nextElement failed to throw a NoSuchElementException when it should have been out of elements");
        } catch (NoSuchElementException e) {
            return;
        }
    }

    /**
     * @tests java.util.StringTokenizer#nextToken()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "nextToken",
        args = {}
    )
    public void test_nextToken() {
        // Test for method java.lang.String
        // java.util.StringTokenizer.nextToken()
        StringTokenizer st = new StringTokenizer("This is a test String");
        assertEquals("nextToken returned incorrect value",
                "This", st.nextToken());
        assertEquals("nextToken returned incorrect value",
                "is", st.nextToken());
        assertEquals("nextToken returned incorrect value",
                "a", st.nextToken());
        assertEquals("nextToken returned incorrect value",
                "test", st.nextToken());
        assertEquals("nextToken returned incorrect value",
                "String", st.nextToken());
        try {
            st.nextToken();
            fail(
                    "nextToken failed to throw a NoSuchElementException when it should have been out of elements");
        } catch (NoSuchElementException e) {
            return;
        }
    }

    /**
     * @tests java.util.StringTokenizer#nextToken(java.lang.String)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "nextToken",
        args = {java.lang.String.class}
    )
    public void test_nextTokenLjava_lang_String() {
        // Test for method java.lang.String
        // java.util.StringTokenizer.nextToken(java.lang.String)
        StringTokenizer st = new StringTokenizer("This is a test String");
        assertEquals("nextToken(String) returned incorrect value with normal token String",
                "This", st.nextToken(" "));
        assertEquals("nextToken(String) returned incorrect value with custom token String",
                " is a ", st.nextToken("tr"));
        assertEquals("calling nextToken() did not use the new default delimiter list",
                "es", st.nextToken());
        st = new StringTokenizer("This:is:a:test:String", " ");
        assertTrue(st.nextToken(":").equals("This"));
        assertTrue(st.nextToken(":").equals("is"));
        assertTrue(st.nextToken(":").equals("a"));
        assertTrue(st.nextToken(":").equals("test"));
        assertTrue(st.nextToken(":").equals("String"));

        try {
            st.nextToken(":");
            fail("NoSuchElementException expected");
        } catch (NoSuchElementException e) {
            //expected
        }

        try {
            st.nextToken(null);
            fail("NullPointerException expected");
        } catch (NullPointerException e) {
            //expected
        }
    }

    /**
     * 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() {
    }
}