1 files changed, 54 insertions, 0 deletions
diff --git a/printing/units_unittest.cc b/printing/units_unittest.cc
new file mode 100644
index 0000000..e042cf3
--- /dev/null
+++ b/printing/units_unittest.cc
@@ -0,0 +1,54 @@
+// Copyright (c) 2006-2008 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 "printing/units.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/gtest/include/gtest/gtest-spi.h"
+
+using namespace printing;
+
+TEST(UnitsTest, Convertions) {
+  EXPECT_EQ(100, ConvertUnit(100, 100, 100));
+  EXPECT_EQ(-100, ConvertUnit(-100, 100, 100));
+  EXPECT_EQ(0, ConvertUnit(0, 100, 100));
+  EXPECT_EQ(99, ConvertUnit(99, 100, 100));
+  EXPECT_EQ(101, ConvertUnit(101, 100, 100));
+  EXPECT_EQ(99900, ConvertUnit(999, 10, 1000));
+  EXPECT_EQ(100100, ConvertUnit(1001, 10, 1000));
+
+  // Rounding.
+  EXPECT_EQ(10, ConvertUnit(999, 1000, 10));
+  EXPECT_EQ(10, ConvertUnit(950, 1000, 10));
+  EXPECT_EQ(9, ConvertUnit(949, 1000, 10));
+  EXPECT_EQ(10, ConvertUnit(1001, 1000, 10));
+  EXPECT_EQ(10, ConvertUnit(1049, 1000, 10));
+  EXPECT_EQ(11, ConvertUnit(1050, 1000, 10));
+  EXPECT_EQ(-10, ConvertUnit(-999, 1000, 10));
+  EXPECT_EQ(-10, ConvertUnit(-950, 1000, 10));
+  EXPECT_EQ(-9, ConvertUnit(-949, 1000, 10));
+  EXPECT_EQ(-10, ConvertUnit(-1001, 1000, 10));
+  EXPECT_EQ(-10, ConvertUnit(-1049, 1000, 10));
+  EXPECT_EQ(-11, ConvertUnit(-1050, 1000, 10));
+
+  EXPECT_EQ(0, ConvertUnit(2, 1000000000, 1));
+  EXPECT_EQ(2000000000, ConvertUnit(2, 1, 1000000000));
+  EXPECT_EQ(4000000000U,
+            static_cast<unsigned int>(ConvertUnit(2, 1, 2000000000)));
+
+  EXPECT_EQ(100, ConvertUnitDouble(100, 100, 100));
+  EXPECT_EQ(-100, ConvertUnitDouble(-100, 100, 100));
+  EXPECT_EQ(0, ConvertUnitDouble(0, 100, 100));
+  EXPECT_EQ(0.000002, ConvertUnitDouble(2, 1000, 0.001));
+  EXPECT_EQ(2000000, ConvertUnitDouble(2, 0.001, 1000));
+
+  EXPECT_EQ(kHundrethsMMPerInch, ConvertMilliInchToHundredThousanthMeter(1000));
+  EXPECT_EQ(-kHundrethsMMPerInch,
+            ConvertMilliInchToHundredThousanthMeter(-1000));
+  EXPECT_EQ(0, ConvertMilliInchToHundredThousanthMeter(0));
+  EXPECT_EQ(1000, ConvertHundredThousanthMeterToMilliInch(kHundrethsMMPerInch));
+  EXPECT_EQ(-1000,
+            ConvertHundredThousanthMeterToMilliInch(-kHundrethsMMPerInch));
+  EXPECT_EQ(0, ConvertHundredThousanthMeterToMilliInch(0));
+}
+