From 29b594940f37ac30142fa12e728c1cb20c6dff56 Mon Sep 17 00:00:00 2001
From: Thomas Fussell <thomas.fussell@gmail.com>
Date: Sat, 9 Jul 2016 10:37:12 -0400
Subject: [PATCH] cover time

---
 cmake/generate-tests                 |  2 +-
 source/utils/tests/test_datetime.hpp | 24 +++++++++++++++++++++++-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/cmake/generate-tests b/cmake/generate-tests
index 7edae32f..bfc599bb 100755
--- a/cmake/generate-tests
+++ b/cmake/generate-tests
@@ -1,2 +1,2 @@
 cd ${0%/*}
-../third-party/cxxtest/bin/cxxtestgen --runner=ErrorPrinter -o "$1"/tests/runner-autogen.cpp ../tests/*.hpp ../source/*/tests/*.hpp
+../third-party/cxxtest/bin/cxxtestgen --runner=ErrorPrinter -o "$1"/tests/runner-autogen.cpp ../source/*/tests/*.hpp
diff --git a/source/utils/tests/test_datetime.hpp b/source/utils/tests/test_datetime.hpp
index 6f48cb59..5519f391 100644
--- a/source/utils/tests/test_datetime.hpp
+++ b/source/utils/tests/test_datetime.hpp
@@ -8,7 +8,29 @@
 class test_datetime : public CxxTest::TestSuite
 {
 public:
-    test_datetime()
+    void test_from_string()
     {
+        xlnt::time t("10:35:45");
+        TS_ASSERT_EQUALS(t.hour, 10);
+        TS_ASSERT_EQUALS(t.minute, 35);
+        TS_ASSERT_EQUALS(t.second, 45);
+    }
+
+    void test_carry()
+    {
+        // We want a time that rolls over to the next second, minute, and hour
+        // Start off with a time 1 microsecond before the next hour
+        xlnt::datetime dt(2016, 7, 9, 10, 59, 59, 999999);
+        auto number = dt.to_number(xlnt::calendar::windows_1900);
+
+        // Add 600 nanoseconds to the raw number which represents time as a fraction of a day
+        // In other words, 6 tenths of a millionth of a sixtieth of a sixtieth of a twenty-fourth of a day
+        number += (0.6 / 1000000) / 60 / 60 / 24;
+        auto rollover = xlnt::datetime::from_number(number, xlnt::calendar::windows_1900);
+
+        TS_ASSERT_EQUALS(rollover.hour, 11);
+        TS_ASSERT_EQUALS(rollover.minute, 00);
+        TS_ASSERT_EQUALS(rollover.second, 00);
+        TS_ASSERT_EQUALS(rollover.microsecond, 00);
     }
 };