ui/base/text/bytes_formatting_unittest.cc

   1 // Copyright (c) 2012 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 "base/strings/utf_string_conversions.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7 #include "ui/base/text/bytes_formatting.h"
   8
   9 namespace ui {
  10
  11 TEST(BytesFormattingTest, GetByteDisplayUnits) {
  12   static const struct {
  13     int64 bytes;
  14     DataUnits expected;
  15   } cases[] = {
  16     {0, DATA_UNITS_BYTE},
  17     {512, DATA_UNITS_BYTE},
  18     {10*1024, DATA_UNITS_KIBIBYTE},
  19     {10*1024*1024, DATA_UNITS_MEBIBYTE},
  20     {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE},
  21     {10LL*1024*1024*1024*1024, DATA_UNITS_TEBIBYTE},
  22     {~(1LL<<63), DATA_UNITS_PEBIBYTE},
  23 #if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
  24     {-1, DATA_UNITS_BYTE},
  25 #endif
  26   };
  27
  28   for (size_t i = 0; i < arraysize(cases); ++i)
  29     EXPECT_EQ(cases[i].expected, GetByteDisplayUnits(cases[i].bytes));
  30 }
  31
  32 TEST(BytesFormattingTest, FormatBytes) {
  33   static const struct {
  34     int64 bytes;
  35     DataUnits units;
  36     const char* expected;
  37     const char* expected_with_units;
  38   } cases[] = {
  39     // Expected behavior: we show one post-decimal digit when we have
  40     // under two pre-decimal digits, except in cases where it makes no
  41     // sense (zero or bytes).
  42     // Since we switch units once we cross the 1000 mark, this keeps
  43     // the display of file sizes or bytes consistently around three
  44     // digits.
  45     {0, DATA_UNITS_BYTE, "0", "0 B"},
  46     {512, DATA_UNITS_BYTE, "512", "512 B"},
  47     {512, DATA_UNITS_KIBIBYTE, "0.5", "0.5 KB"},
  48     {1024*1024, DATA_UNITS_KIBIBYTE, "1,024", "1,024 KB"},
  49     {1024*1024, DATA_UNITS_MEBIBYTE, "1.0", "1.0 MB"},
  50     {1024*1024*1024, DATA_UNITS_GIBIBYTE, "1.0", "1.0 GB"},
  51     {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "10.0", "10.0 GB"},
  52     {99LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "99.0", "99.0 GB"},
  53     {105LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "105", "105 GB"},
  54     {105LL*1024*1024*1024 + 500LL*1024*1024, DATA_UNITS_GIBIBYTE,
  55      "105", "105 GB"},
  56     {~(1LL<<63), DATA_UNITS_GIBIBYTE, "8,589,934,592", "8,589,934,592 GB"},
  57     {~(1LL<<63), DATA_UNITS_PEBIBYTE, "8,192", "8,192 PB"},
  58
  59     {99*1024 + 103, DATA_UNITS_KIBIBYTE, "99.1", "99.1 KB"},
  60     {1024*1024 + 103, DATA_UNITS_KIBIBYTE, "1,024", "1,024 KB"},
  61     {1024*1024 + 205 * 1024, DATA_UNITS_MEBIBYTE, "1.2", "1.2 MB"},
  62     {1024*1024*1024 + (927 * 1024*1024), DATA_UNITS_GIBIBYTE,
  63      "1.9", "1.9 GB"},
  64     {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "10.0", "10.0 GB"},
  65     {100LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "100", "100 GB"},
  66 #if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
  67     {-1, DATA_UNITS_BYTE, "", ""},
  68 #endif
  69   };
  70
  71   for (size_t i = 0; i < arraysize(cases); ++i) {
  72     EXPECT_EQ(base::ASCIIToUTF16(cases[i].expected),
  73               FormatBytesWithUnits(cases[i].bytes, cases[i].units, false));
  74     EXPECT_EQ(base::ASCIIToUTF16(cases[i].expected_with_units),
  75               FormatBytesWithUnits(cases[i].bytes, cases[i].units, true));
  76   }
  77 }
  78
  79 }  // namespace ui