printing/units_unittest.cc

   1 // Copyright (c) 2011 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 "printing/units.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7 #include "testing/gtest/include/gtest/gtest-spi.h"
   8
   9 namespace printing {
  10
  11 TEST(UnitsTest, Convertions) {
  12   EXPECT_EQ(100, ConvertUnit(100, 100, 100));
  13   EXPECT_EQ(-100, ConvertUnit(-100, 100, 100));
  14   EXPECT_EQ(0, ConvertUnit(0, 100, 100));
  15   EXPECT_EQ(99, ConvertUnit(99, 100, 100));
  16   EXPECT_EQ(101, ConvertUnit(101, 100, 100));
  17   EXPECT_EQ(99900, ConvertUnit(999, 10, 1000));
  18   EXPECT_EQ(100100, ConvertUnit(1001, 10, 1000));
  19
  20   // Rounding.
  21   EXPECT_EQ(10, ConvertUnit(999, 1000, 10));
  22   EXPECT_EQ(10, ConvertUnit(950, 1000, 10));
  23   EXPECT_EQ(9, ConvertUnit(949, 1000, 10));
  24   EXPECT_EQ(10, ConvertUnit(1001, 1000, 10));
  25   EXPECT_EQ(10, ConvertUnit(1049, 1000, 10));
  26   EXPECT_EQ(11, ConvertUnit(1050, 1000, 10));
  27   EXPECT_EQ(-10, ConvertUnit(-999, 1000, 10));
  28   EXPECT_EQ(-10, ConvertUnit(-950, 1000, 10));
  29   EXPECT_EQ(-9, ConvertUnit(-949, 1000, 10));
  30   EXPECT_EQ(-10, ConvertUnit(-1001, 1000, 10));
  31   EXPECT_EQ(-10, ConvertUnit(-1049, 1000, 10));
  32   EXPECT_EQ(-11, ConvertUnit(-1050, 1000, 10));
  33
  34   EXPECT_EQ(0, ConvertUnit(2, 1000000000, 1));
  35   EXPECT_EQ(2000000000, ConvertUnit(2, 1, 1000000000));
  36   EXPECT_EQ(4000000000U,
  37             static_cast<unsigned int>(ConvertUnit(2, 1, 2000000000)));
  38
  39   EXPECT_EQ(100, ConvertUnitDouble(100, 100, 100));
  40   EXPECT_EQ(-100, ConvertUnitDouble(-100, 100, 100));
  41   EXPECT_EQ(0, ConvertUnitDouble(0, 100, 100));
  42   EXPECT_DOUBLE_EQ(0.000002, ConvertUnitDouble(2, 1000, 0.001));
  43   EXPECT_EQ(2000000, ConvertUnitDouble(2, 0.001, 1000));
  44
  45   EXPECT_EQ(kHundrethsMMPerInch, ConvertMilliInchToHundredThousanthMeter(1000));
  46   EXPECT_EQ(-kHundrethsMMPerInch,
  47             ConvertMilliInchToHundredThousanthMeter(-1000));
  48   EXPECT_EQ(0, ConvertMilliInchToHundredThousanthMeter(0));
  49   EXPECT_EQ(1000, ConvertHundredThousanthMeterToMilliInch(kHundrethsMMPerInch));
  50   EXPECT_EQ(-1000,
  51             ConvertHundredThousanthMeterToMilliInch(-kHundrethsMMPerInch));
  52   EXPECT_EQ(0, ConvertHundredThousanthMeterToMilliInch(0));
  53
  54   EXPECT_EQ(8.25, ConvertPixelsToPointDouble(11.0));
  55   // Round down.
  56   EXPECT_EQ(8, ConvertPixelsToPoint(11));
  57   EXPECT_EQ(7.5, ConvertPixelsToPointDouble(10.0));
  58   // Round up.
  59   EXPECT_EQ(8, ConvertPixelsToPoint(10));
  60   EXPECT_EQ(0, ConvertPixelsToPoint(0));
  61 }
  62
  63 }  // namespace printing