Localize strings, speeds.

ui/base/text/bytes_formatting_unittest.cc

Index: ui/base/text/bytes_formatting_unittest.cc
diff --git a/ui/base/text/bytes_formatting_unittest.cc b/ui/base/text/bytes_formatting_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a21425926f05ae0e11f36c851627ee0b91983656
--- /dev/null
+++ b/ui/base/text/bytes_formatting_unittest.cc
@@ -0,0 +1,79 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/text/bytes_formatting.h"
+
+namespace ui {
+
+TEST(BytesFormattingTest, GetByteDisplayUnits) {
+  static const struct {
+    int64 bytes;
+    DataUnits expected;
+  } cases[] = {
+    {0, DATA_UNITS_BYTE},
+    {512, DATA_UNITS_BYTE},
+    {10*1024, DATA_UNITS_KIBIBYTE},
+    {10*1024*1024, DATA_UNITS_MEBIBYTE},
+    {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE},
+    {10LL*1024*1024*1024*1024, DATA_UNITS_TEBIBYTE},
+    {~(1LL<<63), DATA_UNITS_PEBIBYTE},
+#ifdef NDEBUG
+    {-1, DATA_UNITS_BYTE},
+#endif
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i)
+    EXPECT_EQ(cases[i].expected, GetByteDisplayUnits(cases[i].bytes));
+}
+
+TEST(BytesFormattingTest, FormatBytes) {
+  static const struct {
+    int64 bytes;
+    DataUnits units;
+    const char* expected;
+    const char* expected_with_units;
+  } cases[] = {
+    // Expected behavior: we show one post-decimal digit when we have
+    // under two pre-decimal digits, except in cases where it makes no
+    // sense (zero or bytes).
+    // Since we switch units once we cross the 1000 mark, this keeps
+    // the display of file sizes or bytes consistently around three
+    // digits.
+    {0, DATA_UNITS_BYTE, "0", "0 B"},
+    {512, DATA_UNITS_BYTE, "512", "512 B"},
+    {512, DATA_UNITS_KIBIBYTE, "0.5", "0.5 kB"},
+    {1024*1024, DATA_UNITS_KIBIBYTE, "1,024", "1,024 kB"},
+    {1024*1024, DATA_UNITS_MEBIBYTE, "1.0", "1.0 MB"},
+    {1024*1024*1024, DATA_UNITS_GIBIBYTE, "1.0", "1.0 GB"},
+    {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "10.0", "10.0 GB"},
+    {99LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "99.0", "99.0 GB"},
+    {105LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "105", "105 GB"},
+    {105LL*1024*1024*1024 + 500LL*1024*1024, DATA_UNITS_GIBIBYTE,
+     "105", "105 GB"},
+    {~(1LL<<63), DATA_UNITS_GIBIBYTE, "8,589,934,592", "8,589,934,592 GB"},
+    {~(1LL<<63), DATA_UNITS_PEBIBYTE, "8,192", "8,192 PB"},
+
+    {99*1024 + 103, DATA_UNITS_KIBIBYTE, "99.1", "99.1 kB"},
+    {1024*1024 + 103, DATA_UNITS_KIBIBYTE, "1,024", "1,024 kB"},
+    {1024*1024 + 205 * 1024, DATA_UNITS_MEBIBYTE, "1.2", "1.2 MB"},
+    {1024*1024*1024 + (927 * 1024*1024), DATA_UNITS_GIBIBYTE,
+     "1.9", "1.9 GB"},
+    {10LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "10.0", "10.0 GB"},
+    {100LL*1024*1024*1024, DATA_UNITS_GIBIBYTE, "100", "100 GB"},
+#ifdef NDEBUG
+    {-1, DATA_UNITS_BYTE, "", ""},
+#endif
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+    EXPECT_EQ(ASCIIToUTF16(cases[i].expected),
+              FormatBytesWithUnits(cases[i].bytes, cases[i].units, false));
+    EXPECT_EQ(ASCIIToUTF16(cases[i].expected_with_units),
+              FormatBytesWithUnits(cases[i].bytes, cases[i].units, true));
+  }
+}
+
+}  // namespace ui