/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
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/*
 * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
 * Portions Copyright 2012 Jens Elkner.
 */
package org.opensolaris.opengrok.web;

import java.io.ByteArrayInputStream;
import java.lang.reflect.Method;
import java.net.URI;
import java.util.Locale;
import javax.xml.parsers.DocumentBuilderFactory;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 * Test of the methods in <code>org.opensolaris.opengrok.web.Util</code>.
 */
public class UtilTest {
    private static Locale savedLocale;

    @SuppressWarnings("javadoc")
    @BeforeClass
    public static void setUpClass() {
        // Some of the methods have different results in different locales.
        // Set locale to en_US for these tests.
        savedLocale = Locale.getDefault();
        Locale.setDefault(Locale.US);
    }

    @SuppressWarnings("javadoc")
    @AfterClass
    public static void tearDownClass() {
        Locale.setDefault(savedLocale);
        savedLocale = null;
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void htmlize() {
        String[][] input_output = {
            {"Newline\nshould become <br/>",
                      "Newline<br/>should become &lt;br/&gt;" },
            {"This is a test", "This is a test" },
            {"Open & Grok", "Open &amp; Grok" },
            {"&amp;&lt;&gt;", "&amp;amp;&amp;lt;&amp;gt;" },
        };
        for (int i=0; i < input_output.length; i++) {
            String[] in_out = input_output[i];
            if (i == 0) {
                assertEquals(in_out[1].replace("<br/>", "\n"), Util.htmlize(in_out[0]));
            } else {
                assertEquals(in_out[1], Util.htmlize(in_out[0]));
            }
            // 2 args
            assertEquals(in_out[1], Util.htmlize(in_out[0], "<br/>"));
        }
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void breadcrumbPath() {
        assertEquals(null, Util.breadcrumbPath("/root/", null));

        assertEquals("", Util.breadcrumbPath("/root/", ""));

        assertEquals("<a href=\"/root/x\">x</a>", 
            Util.breadcrumbPath("/root/", "x"));
        assertEquals("<a href=\"/root/xx\">xx</a>",
                Util.breadcrumbPath("/root/", "xx"));

        // parent directories have a trailing slash in href
        assertEquals("<a href=\"/r/a/\">a</a>/<a href=\"/r/a/b\">b</a>",
                Util.breadcrumbPath("/r/", "a/b"));
        // if basename is a dir (ends with file seperator), href link also
        // ends with a '/'
        assertEquals("<a href=\"/r/a/\">a</a>/<a href=\"/r/a/b/\">b</a>/",
                Util.breadcrumbPath("/r/", "a/b/"));
        // should work the same way with a '.' as file separator
        assertEquals("<a href=\"/r/java/\">java</a>." +
                "<a href=\"/r/java/lang/\">lang</a>." +
                "<a href=\"/r/java/lang/String\">String</a>",
                Util.breadcrumbPath("/r/", "java.lang.String", '.'));
        // suffix added to the link?
        assertEquals("<a href=\"/root/xx&project=y\">xx</a>",
                Util.breadcrumbPath("/root/", "xx", '/', "&project=y", false));
        // compact: path needs to be resolved to /xx and no link is added
        // for the virtual root directory (parent) but emitted as plain text.
        // Prefix gets just prefixed as is and not mangled wrt. path -> "//"
        assertEquals("/<a href=\"/root//xx&project=y\">xx</a>",
                Util.breadcrumbPath("/root/", "../xx", '/', "&project=y", true));
        // relative pathes are resolved wrt. / , so path resolves to /a/c/d 
        assertEquals("/<a href=\"/r//a/\">a</a>/" +
                "<a href=\"/r//a/c/\">c</a>/" +
                "<a href=\"/r//a/c/d\">d</a>",
                Util.breadcrumbPath("/r/", "../a/b/../c//d", '/', "", true));
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void redableSize() {
        assertEquals("0 ", Util.readableSize(0));
        assertEquals("1 ", Util.readableSize(1));
        assertEquals("-1 ", Util.readableSize(-1));
        assertEquals("1,000 ", Util.readableSize(1000));
        assertEquals("1 KiB", Util.readableSize(1024));
        assertEquals("2.4 KiB", Util.readableSize(2500));
        assertEquals("<b>1.4 MiB</b>", Util.readableSize(1474560));
        assertEquals("<b>3,584.4 MiB</b>", Util.readableSize(3758489600L));
        assertEquals("<b>8,796,093,022,208 MiB</b>",
                     Util.readableSize(Long.MAX_VALUE));
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void path2uid() {
        assertEquals("\u0000etc\u0000passwd\u0000date",
                     Util.path2uid("/etc/passwd", "date"));
    }

    @SuppressWarnings({ "javadoc", "static-method" })
    @Test
    public void uid2url() {
        assertEquals("/etc/passwd", Util.uid2url(
                Util.path2uid("/etc/passwd", "date")));
    }
    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void uriEncodeURL() {
        assertEquals("http://www.heise.de",
            Util.uriEncodeURL("http://www.heise.de"));
        assertEquals("http://www.heise.de/",
            Util.uriEncodeURL("http://www.heise.de/"));
        // important to escape ", since it may terminate an attr value ...
        assertEquals("http://www.hei%22se.de/",
            Util.uriEncodeURL("http://www.hei\"se.de/"));
        // & handling
        assertEquals("http://www.heise.de/bla&amp;alpha",
            Util.uriEncodeURL("http://www.heise.de/bla&alpha"));
        assertEquals("http://www.heise.de/bla?x=1&amp;alpha",
            Util.uriEncodeURL("http://www.heise.de/bla?x=1&alpha"));
        assertEquals("http://www.heise.de/bla?x=1&amp;alpha",
            Util.uriEncodeURL("http://www.heise.de/bla?x=1&amp;alpha"));
        // as intended: encoder is not perfect - stops at 1st entity encountered
        assertEquals("http://www.heise.de/bla?x=1&amp;alpha&bla",
            Util.uriEncodeURL("http://www.heise.de/bla?x=1&amp;alpha&bla"));
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void URIEncodePath() throws Exception {
        String[] testPath = new String[] {
            "", "/", "a", "\t", "a+b", "a b", "/a//x/yz/##/ / ?",
            "foo::bar::test.js", "bl\u00E5b\u00E6rsyltet\u00F8y"
        };
        // Assuming this test will not be run in a sandbox and URI's internal 
        // decoder does the right thing. URI assumes UTF-8 encoding, what we 
        // use as well.
        Class<?> clazz = URI.class;
        Method decoder = clazz.getDeclaredMethod("decode", String.class);
        decoder.setAccessible(true);
        for (int i=testPath.length-1; i >= 0; i--) {
            String encoded = Util.uriEncodePath(testPath[i]);
            Object decoded = decoder.invoke(clazz, encoded);
            assertEquals(testPath[i], decoded);
        }
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void formQuoteEscape() {
        assertEquals("", Util.formQuoteEscape(null));
        assertEquals("abc&amp;", Util.formQuoteEscape("abc&"));
        assertEquals("&quot;abc&quot;", Util.formQuoteEscape("\"abc\""));
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void diffline() {
        String[][] tests = {
            {
                "\"(ses_id, mer_id, pass_id, \" + refCol +\" , mer_ref, amnt, "
                + "cur, ps_id, ret_url, d_req_time, d_req_mil, h_resp_time, "
                + "h_resp_mil) \"",
                "\"(ses_id, mer_id, pass_id, \" + refCol +\" , mer_ref, amnt, "
                + "cur, ps_id, ret_url, exp_url, d_req_time, d_req_mil, "
                + "h_resp_time, h_resp_mil) \"",

                "\"(ses_id, mer_id, pass_id, \" + refCol +\" , mer_ref, amnt, "
                + "cur, ps_id, ret_url, <span class=\"p\">exp_url, "
                + "</span>d_req_time, d_req_mil, h_resp_time, h_resp_mil) \""
            },
            {   
                "\"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)\", values);",
                "\"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)\", values);",
                
                "\"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?<span "
                + "class=\"p\">, ?</span>)\", values);"
            },
            {
                "char    *config_list = NULL;",
                "char    **config_list = NULL;",
                
                "char    *<span class=\"p\">*</span>config_list = NULL;"
            },
            {
                "* An error occured or there is non-numeric stuff at the end",
                "* An error occurred or there is non-numeric stuff at the end",
                
                "* An error occur<span class=\"p\">r</span>ed or there is "
                + "non-numeric stuff at the end"
            }
        };
        for (int i=0; i < tests.length; i++) {
            String[] strings=Util.diffline(tests[i][0], tests[i][1]);
            assertEquals(""+ i + "," + 0, strings[0], tests[i][0]);
            assertEquals(""+ i + "," + 1, strings[1], tests[i][2]);
        }
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void dumpConfiguration() throws Exception {
        StringBuilder out = new StringBuilder();
        Util.dumpConfiguration(out);
        String s = out.toString();

        // Verify that we got a table.
        assertTrue(s.startsWith("<table"));

        // Verify that the output is well-formed.
        String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + s;
        DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(
                new ByteArrayInputStream(xml.getBytes("UTF-8")));
    }

    @SuppressWarnings({ "static-method", "javadoc" })
    @Test
    public void jsStringLiteral() {
        assertEquals("\"abc\\n\\r\\\"'\\\\\"",
                     Util.jsStringLiteral("abc\n\r\"'\\"));
    }
}