android-platform-libcore/luni/src/test/java/tests/api/java/io/LineNumberInputStreamTest.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 java.io.BufferedInputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.LineNumberInputStream;

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

@SuppressWarnings("deprecation")
@TestTargetClass(
        value = LineNumberInputStream.class,
        untestedMethods = {
            @TestTargetNew(
                    method = "LineNumberInputStream",
                    args = {java.io.InputStream.class},
                    level = TestLevel.NOT_NECESSARY,
                    notes = "Simply calls super(in). If this fails, " +
                            "none of the other tests would work."
            )
        }
)
public class LineNumberInputStreamTest extends junit.framework.TestCase {

    final String text = "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n148\n149\n150\n151\n152\n153\n154\n155\n156\n157\n158\n159\n160\n161\n162\n163\n164\n165\n166\n167\n168\n169\n170\n171\n172\n173\n174\n175\n176\n177\n178\n179\n180\n181\n182\n183\n184\n185\n186\n187\n188\n189\n190\n191\n192\n193\n194\n195\n196\n197\n198\n199\n200\n201\n202\n203\n204\n205\n206\n207\n208\n209\n210\n211\n212\n213\n214\n215\n216\n217\n218\n219\n220\n221\n222\n223\n224\n225\n226\n227\n228\n229\n230\n231\n232\n233\n234\n235\n236\n237\n238\n239\n240\n241\n242\n243\n244\n245\n246\n247\n248\n249\n250\n251\n252\n253\n254\n255\n256\n257\n258\n259\n260\n261\n262\n263\n264\n265\n266\n267\n268\n269\n270\n271\n272\n273\n274\n275\n276\n277\n278\n279\n280\n281\n282\n283\n284\n285\n286\n287\n288\n289\n290\n291\n292\n293\n294\n295\n296\n297\n298\n299\n300\n301\n302\n303\n304\n305\n306\n307\n308\n309\n310\n311\n312\n313\n314\n315\n316\n317\n318\n319\n320\n321\n322\n323\n324\n325\n326\n327\n328\n329\n330\n331\n332\n333\n334\n335\n336\n337\n338\n339\n340\n341\n342\n343\n344\n345\n346\n347\n348\n349\n350\n351\n352\n353\n354\n355\n356\n357\n358\n359\n360\n361\n362\n363\n364\n365\n366\n367\n368\n369\n370\n371\n372\n373\n374\n375\n376\n377\n378\n379\n380\n381\n382\n383\n384\n385\n386\n387\n388\n389\n390\n391\n392\n393\n394\n395\n396\n397\n398\n399\n400\n401\n402\n403\n404\n405\n406\n407\n408\n409\n410\n411\n412\n413\n414\n415\n416\n417\n418\n419\n420\n421\n422\n423\n424\n425\n426\n427\n428\n429\n430\n431\n432\n433\n434\n435\n436\n437\n438\n439\n440\n441\n442\n443\n444\n445\n446\n447\n448\n449\n450\n451\n452\n453\n454\n455\n456\n457\n458\n459\n460\n461\n462\n463\n464\n465\n466\n467\n468\n469\n470\n471\n472\n473\n474\n475\n476\n477\n478\n479\n480\n481\n482\n483\n484\n485\n486\n487\n488\n489\n490\n491\n492\n493\n494\n495\n496\n497\n498\n499\n500\n501";

    String dosText = "0\r\n1\r\n2";

    LineNumberInputStream lnis;

    LineNumberInputStream lnis2;

    /**
     * @tests java.io.LineNumberInputStream#available()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        method = "available",
        args = {}
    )
    public void test_available() throws IOException {
        assertEquals("Test 1: Returned incorrect number of available bytes;",
                text.length() / 2, lnis.available());

        lnis.close();
        try {
            lnis.available();
            fail("Test 2: IOException expected.");
        } catch (IOException e) {
            // Expected.
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#getLineNumber()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "getLineNumber",
        args = {}
    )
    public void test_getLineNumber() {
        // Test for method int java.io.LineNumberInputStream.getLineNumber()
        assertEquals("New stream returned line number other than zero", 0, lnis
                .getLineNumber());
        try {
            lnis.read();
            lnis.read();
        } catch (IOException e) {
            fail("Exception during getLineNumber test : " + e.getMessage());
        }
        assertEquals("stream returned incorrect line number after read", 1, lnis
                .getLineNumber());
        lnis.setLineNumber(89);
        assertEquals("stream returned incorrect line number after set", 89, lnis
                .getLineNumber());
    }

    /**
     * @tests java.io.LineNumberInputStream#mark(int)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "mark",
        args = {int.class}
    )
    public void test_markI() {
        // Test for method void java.io.LineNumberInputStream.mark(int)
        try {
            lnis.mark(40);
            lnis.skip(4);
            lnis.reset();
            assertEquals("Failed to mark", 0, lnis.getLineNumber());
            assertEquals("Failed to mark", '0', lnis.read());
        } catch (IOException e) {
            fail("Exception during mark test : " + e.getMessage());
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#read()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        method = "read",
        args = {}
    )
    public void test_read() throws IOException {
        assertEquals("Test 1: Failed to read correct byte;",
                '0', lnis.read());
        assertEquals("Test 2: Failed to read correct byte on dos text;",
                '0', lnis2.read());
        assertEquals("Test 3: Failed to read correct byte on dos text;",
                '\n', lnis2.read());
        assertEquals("Test 4: Failed to read correct byte on dos text;",
                '1', lnis2.read());
        assertEquals("Test 5: Failed to read correct byte on dos text;",
                '\n', lnis2.read());
        assertEquals("Test 6: Failed to read correct byte on dos text;",
                '2', lnis2.read());

        lnis.close();
        try {
            lnis.read();
            fail("Test 7: IOException expected.");
        } catch (IOException e) {
            // Expected.
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#read(byte[], int, int)
     */
    @TestTargetNew(
        level = TestLevel.PARTIAL_COMPLETE,
        method = "read",
        args = {byte[].class, int.class, int.class}
    )
    public void test_read$BII() throws IOException {
        byte[] buf = new byte[100];
        lnis.read(buf, 0, 100);
        assertTrue("Test 1: Incorrect bytes read.",
                new String(buf, 0, 100).equals(text.substring(0, 100)));

        lnis.close();
        try {
            lnis.read(buf, 0, 100);
            fail("Test 2: IOException expected.");
        } catch (IOException e) {
            // Expected.
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#read(byte[], int, int)
     */
    @TestTargetNew(
        level = TestLevel.PARTIAL_COMPLETE,
        method = "read",
        args = {byte[].class, int.class, int.class}
    )
    public void test_read$BII_Exception() throws IOException {
        byte[] buf = new byte[10];

        try {
            lnis.read(buf, -1, 1);
            fail("IndexOutOfBoundsException expected.");
        } catch (IndexOutOfBoundsException e) {
            // Expected.
        }

        try {
            lnis.read(buf, 0, -1);
            fail("IndexOutOfBoundsException expected.");
        } catch (IndexOutOfBoundsException e) {
            // Expected.
        }

        try {
            lnis.read(buf, 10, 1);
            fail("IndexOutOfBoundsException expected.");
        } catch (IndexOutOfBoundsException e) {
            // Expected.
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#reset()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "IOException checking missed.",
        method = "reset",
        args = {}
    )
    public void test_reset() throws IOException {
        lnis.mark(40);
        lnis.skip(4);
        lnis.reset();
        assertEquals("Test 1: Failed to reset", 0, lnis.getLineNumber());
        assertEquals("Test 2: Failed to reset", '0', lnis.read());
        lnis.reset();

        try {
            lnis.mark(5);
            lnis.skip(100);
            lnis.reset();
            fail("Test 3: Failed to invalidate mark.");
        } catch (IOException e) {
            // Correct; mark has been invalidated.
        }

        lnis.mark(5);
        lnis.close();
        try {
            lnis.reset();
            fail("Test 4: IOException expected.");
        } catch (IOException e) {
            // Expected.
        }
    }

    /**
     * @tests java.io.LineNumberInputStream#setLineNumber(int)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "setLineNumber",
        args = {int.class}
    )
    public void test_setLineNumberI() {
        lnis.setLineNumber(42);
        assertEquals("Test 1: Failed to set line number;",
                42, lnis.getLineNumber());
        // Repeat the test with a different number to make sure that the
        // line number is really set.
        lnis.setLineNumber(89);
        assertEquals("Test 2: Failed to set line number;",
                89, lnis.getLineNumber());
    }

    /**
     * @tests java.io.LineNumberInputStream#skip(long)
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        method = "skip",
        args = {long.class}
    )
    public void test_skipJ() throws IOException {
        long skipped = lnis.skip(4);
        assertEquals("Test 1: Incorrect number of characters skipped;",
                4, skipped);
        assertEquals("Test 2: Skip failed to increment line number;",
                2, lnis.getLineNumber());

        lnis.close();
        try {
            lnis.skip(4);
            fail("Test 3: IOException expected.");
        } catch (IOException e) {
            // Expected.
        }
    }

    protected void setUp() {
        /*
         * In order for IOException to be thrown in reset(),the inputStream to
         * the constructor cannot be a byteArrayInputstream because the reset()
         * in byteArrayInputStream does not throw IOException. When
         * BufferedInputStream is used, the size of the buffer must be smaller
         * than the readlimit in mark inorder for IOException to be thrown
         */
        BufferedInputStream buftemp = new BufferedInputStream(
                new ByteArrayInputStream(text.getBytes()), 4);
        lnis = new LineNumberInputStream(buftemp);
        lnis2 = new LineNumberInputStream(new ByteArrayInputStream(dosText
                .getBytes()));
    }

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