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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/ui/elide_url.h"
      6 
      7 #include "base/strings/utf_string_conversions.h"
      8 #include "testing/gtest/include/gtest/gtest.h"
      9 #include "ui/gfx/font_list.h"
     10 #include "ui/gfx/text_elider.h"
     11 #include "ui/gfx/text_utils.h"
     12 #include "url/gurl.h"
     13 
     14 using base::UTF8ToUTF16;
     15 using gfx::GetStringWidthF;
     16 using gfx::kEllipsis;
     17 
     18 namespace {
     19 
     20 struct Testcase {
     21   const std::string input;
     22   const std::string output;
     23 };
     24 
     25 void RunUrlTest(Testcase* testcases, size_t num_testcases) {
     26   static const gfx::FontList font_list;
     27   for (size_t i = 0; i < num_testcases; ++i) {
     28     const GURL url(testcases[i].input);
     29     // Should we test with non-empty language list?
     30     // That's kinda redundant with net_util_unittests.
     31     const float available_width =
     32         GetStringWidthF(UTF8ToUTF16(testcases[i].output), font_list);
     33     EXPECT_EQ(UTF8ToUTF16(testcases[i].output),
     34               ElideUrl(url, font_list, available_width, std::string()));
     35   }
     36 }
     37 
     38 // Test eliding of commonplace URLs.
     39 TEST(TextEliderTest, TestGeneralEliding) {
     40   const std::string kEllipsisStr(kEllipsis);
     41   Testcase testcases[] = {
     42     {"http://www.google.com/intl/en/ads/",
     43      "www.google.com/intl/en/ads/"},
     44     {"http://www.google.com/intl/en/ads/", "www.google.com/intl/en/ads/"},
     45     {"http://www.google.com/intl/en/ads/",
     46      "google.com/intl/" + kEllipsisStr + "/ads/"},
     47     {"http://www.google.com/intl/en/ads/",
     48      "google.com/" + kEllipsisStr + "/ads/"},
     49     {"http://www.google.com/intl/en/ads/", "google.com/" + kEllipsisStr},
     50     {"http://www.google.com/intl/en/ads/", "goog" + kEllipsisStr},
     51     {"https://subdomain.foo.com/bar/filename.html",
     52      "subdomain.foo.com/bar/filename.html"},
     53     {"https://subdomain.foo.com/bar/filename.html",
     54      "subdomain.foo.com/" + kEllipsisStr + "/filename.html"},
     55     {"http://subdomain.foo.com/bar/filename.html",
     56      kEllipsisStr + "foo.com/" + kEllipsisStr + "/filename.html"},
     57     {"http://www.google.com/intl/en/ads/?aLongQueryWhichIsNotRequired",
     58      "www.google.com/intl/en/ads/?aLongQ" + kEllipsisStr},
     59   };
     60 
     61   RunUrlTest(testcases, arraysize(testcases));
     62 }
     63 
     64 // When there is very little space available, the elision code will shorten
     65 // both path AND file name to an ellipsis - ".../...". To avoid this result,
     66 // there is a hack in place that simply treats them as one string in this
     67 // case.
     68 TEST(TextEliderTest, TestTrailingEllipsisSlashEllipsisHack) {
     69   const std::string kEllipsisStr(kEllipsis);
     70 
     71   // Very little space, would cause double ellipsis.
     72   gfx::FontList font_list;
     73   GURL url("http://battersbox.com/directory/foo/peter_paul_and_mary.html");
     74   float available_width = GetStringWidthF(
     75       UTF8ToUTF16("battersbox.com/" + kEllipsisStr + "/" + kEllipsisStr),
     76       font_list);
     77 
     78   // Create the expected string, after elision. Depending on font size, the
     79   // directory might become /dir... or /di... or/d... - it never should be
     80   // shorter than that. (If it is, the font considers d... to be longer
     81   // than .../... -  that should never happen).
     82   ASSERT_GT(GetStringWidthF(UTF8ToUTF16(kEllipsisStr + "/" + kEllipsisStr),
     83                             font_list),
     84             GetStringWidthF(UTF8ToUTF16("d" + kEllipsisStr), font_list));
     85   GURL long_url("http://battersbox.com/directorynameisreallylongtoforcetrunc");
     86   base::string16 expected =
     87       ElideUrl(long_url, font_list, available_width, std::string());
     88   // Ensure that the expected result still contains part of the directory name.
     89   ASSERT_GT(expected.length(), std::string("battersbox.com/d").length());
     90   EXPECT_EQ(expected,
     91              ElideUrl(url, font_list, available_width, std::string()));
     92 
     93   // More space available - elide directories, partially elide filename.
     94   Testcase testcases[] = {
     95     {"http://battersbox.com/directory/foo/peter_paul_and_mary.html",
     96      "battersbox.com/" + kEllipsisStr + "/peter" + kEllipsisStr},
     97   };
     98   RunUrlTest(testcases, arraysize(testcases));
     99 }
    100 
    101 // Test eliding of empty strings, URLs with ports, passwords, queries, etc.
    102 TEST(TextEliderTest, TestMoreEliding) {
    103   const std::string kEllipsisStr(kEllipsis);
    104   Testcase testcases[] = {
    105     {"http://www.google.com/foo?bar", "www.google.com/foo?bar"},
    106     {"http://xyz.google.com/foo?bar", "xyz.google.com/foo?" + kEllipsisStr},
    107     {"http://xyz.google.com/foo?bar", "xyz.google.com/foo" + kEllipsisStr},
    108     {"http://xyz.google.com/foo?bar", "xyz.google.com/fo" + kEllipsisStr},
    109     {"http://a.b.com/pathname/c?d", "a.b.com/" + kEllipsisStr + "/c?d"},
    110     {"", ""},
    111     {"http://foo.bar..example.com...hello/test/filename.html",
    112      "foo.bar..example.com...hello/" + kEllipsisStr + "/filename.html"},
    113     {"http://foo.bar../", "foo.bar.."},
    114     {"http://xn--1lq90i.cn/foo", "\xe5\x8c\x97\xe4\xba\xac.cn/foo"},
    115     {"http://me:mypass@secrethost.com:99/foo?bar#baz",
    116      "secrethost.com:99/foo?bar#baz"},
    117     {"http://me:mypass@ss%xxfdsf.com/foo", "ss%25xxfdsf.com/foo"},
    118     {"mailto:elgoato (at) elgoato.com", "mailto:elgoato (at) elgoato.com"},
    119     {"javascript:click(0)", "javascript:click(0)"},
    120     {"https://chess.eecs.berkeley.edu:4430/login/arbitfilename",
    121      "chess.eecs.berkeley.edu:4430/login/arbitfilename"},
    122     {"https://chess.eecs.berkeley.edu:4430/login/arbitfilename",
    123      kEllipsisStr + "berkeley.edu:4430/" + kEllipsisStr + "/arbitfilename"},
    124 
    125     // Unescaping.
    126     {"http://www/%E4%BD%A0%E5%A5%BD?q=%E4%BD%A0%E5%A5%BD#\xe4\xbd\xa0",
    127      "www/\xe4\xbd\xa0\xe5\xa5\xbd?q=\xe4\xbd\xa0\xe5\xa5\xbd#\xe4\xbd\xa0"},
    128 
    129     // Invalid unescaping for path. The ref will always be valid UTF-8. We don't
    130     // bother to do too many edge cases, since these are handled by the escaper
    131     // unittest.
    132     {"http://www/%E4%A0%E5%A5%BD?q=%E4%BD%A0%E5%A5%BD#\xe4\xbd\xa0",
    133      "www/%E4%A0%E5%A5%BD?q=\xe4\xbd\xa0\xe5\xa5\xbd#\xe4\xbd\xa0"},
    134   };
    135 
    136   RunUrlTest(testcases, arraysize(testcases));
    137 }
    138 
    139 // Test eliding of file: URLs.
    140 TEST(TextEliderTest, TestFileURLEliding) {
    141   const std::string kEllipsisStr(kEllipsis);
    142   Testcase testcases[] = {
    143     {"file:///C:/path1/path2/path3/filename",
    144      "file:///C:/path1/path2/path3/filename"},
    145     {"file:///C:/path1/path2/path3/filename",
    146      "C:/path1/path2/path3/filename"},
    147 // GURL parses "file:///C:path" differently on windows than it does on posix.
    148 #if defined(OS_WIN)
    149     {"file:///C:path1/path2/path3/filename",
    150      "C:/path1/path2/" + kEllipsisStr + "/filename"},
    151     {"file:///C:path1/path2/path3/filename",
    152      "C:/path1/" + kEllipsisStr + "/filename"},
    153     {"file:///C:path1/path2/path3/filename",
    154      "C:/" + kEllipsisStr + "/filename"},
    155 #endif
    156     {"file://filer/foo/bar/file", "filer/foo/bar/file"},
    157     {"file://filer/foo/bar/file", "filer/foo/" + kEllipsisStr + "/file"},
    158     {"file://filer/foo/bar/file", "filer/" + kEllipsisStr + "/file"},
    159   };
    160 
    161   RunUrlTest(testcases, arraysize(testcases));
    162 }
    163 
    164 TEST(TextEliderTest, TestHostEliding) {
    165   const std::string kEllipsisStr(kEllipsis);
    166   Testcase testcases[] = {
    167     {"http://google.com", "google.com"},
    168     {"http://subdomain.google.com", kEllipsisStr + ".google.com"},
    169     {"http://reallyreallyreallylongdomainname.com",
    170          "reallyreallyreallylongdomainname.com"},
    171     {"http://a.b.c.d.e.f.com", kEllipsisStr + "f.com"},
    172     {"http://foo", "foo"},
    173     {"http://foo.bar", "foo.bar"},
    174     {"http://subdomain.foo.bar", kEllipsisStr + "in.foo.bar"},
    175 // IOS width calculations are off by a letter from other platforms for
    176 // some strings from other platforms, probably for strings with too
    177 // many kerned letters on the default font set.
    178 #if !defined(OS_IOS)
    179     {"http://subdomain.reallylongdomainname.com",
    180          kEllipsisStr + "ain.reallylongdomainname.com"},
    181     {"http://a.b.c.d.e.f.com", kEllipsisStr + ".e.f.com"},
    182 #endif
    183   };
    184 
    185   for (size_t i = 0; i < arraysize(testcases); ++i) {
    186     const float available_width =
    187         GetStringWidthF(UTF8ToUTF16(testcases[i].output), gfx::FontList());
    188     EXPECT_EQ(UTF8ToUTF16(testcases[i].output), ElideHost(
    189         GURL(testcases[i].input), gfx::FontList(), available_width));
    190   }
    191 
    192   // Trying to elide to a really short length will still keep the full TLD+1
    193   EXPECT_EQ(base::ASCIIToUTF16("google.com"),
    194             ElideHost(GURL("http://google.com"), gfx::FontList(), 2));
    195   EXPECT_EQ(base::UTF8ToUTF16(kEllipsisStr + ".google.com"),
    196             ElideHost(GURL("http://subdomain.google.com"), gfx::FontList(), 2));
    197   EXPECT_EQ(base::ASCIIToUTF16("foo.bar"),
    198             ElideHost(GURL("http://foo.bar"), gfx::FontList(), 2));
    199 }
    200 
    201 }  // namespace
    202