diff --git a/googletest/samples/sample4.cc b/googletest/samples/sample4.cc
index 2f7c87a..724bcb5 100644
--- a/googletest/samples/sample4.cc
+++ b/googletest/samples/sample4.cc
@@ -38,6 +38,16 @@
   return counter_++;
 }
 
+// Returns the current counter value, and decrements it.
+// counter can not be less than 0, return 0 in this case
+  int Counter::Decrement() {
+    if (counter_==0){
+      return counter_;
+    }
+    else
+      return counter_--;
+  }
+
 // Prints the current counter value to STDOUT.
 void Counter::Print() const {
   printf("%d", counter_);
diff --git a/googletest/samples/sample4.h b/googletest/samples/sample4.h
index fda5f33..a9679ff 100644
--- a/googletest/samples/sample4.h
+++ b/googletest/samples/sample4.h
@@ -43,6 +43,10 @@
   // Returns the current counter value, and increments it.
   int Increment();
 
+// Returns the current counter value, and decrements it.
+  int Decrement();
+
+
   // Prints the current counter value to STDOUT.
   void Print() const;
 };
diff --git a/googletest/samples/sample4_unittest.cc b/googletest/samples/sample4_unittest.cc
index 079a70d..ee655c6 100644
--- a/googletest/samples/sample4_unittest.cc
+++ b/googletest/samples/sample4_unittest.cc
@@ -37,12 +37,19 @@
 TEST(Counter, Increment) {
   Counter c;
 
+  // Test that counter 0 returns 0
+  EXPECT_EQ(0, c.Decrement());
+
+
   // EXPECT_EQ() evaluates its arguments exactly once, so they
   // can have side effects.
 
   EXPECT_EQ(0, c.Increment());
   EXPECT_EQ(1, c.Increment());
   EXPECT_EQ(2, c.Increment());
+
+  EXPECT_EQ(3, c.Decrement());
+
 }
 
 }  // namespace
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@@ -1 +0,0 @@
----
diff --git a/mybuild/Testing/Temporary/LastTest.log b/mybuild/Testing/Temporary/LastTest.log
deleted file mode 100644
index c95a7c3..0000000
--- a/mybuild/Testing/Temporary/LastTest.log
+++ /dev/null
@@ -1,3 +0,0 @@
-Start testing: Aug 20 14:07 EDT
-----------------------------------------------------------
-End testing: Aug 20 14:07 EDT
diff --git a/mybuild/googlemock/gmock.pc b/mybuild/googlemock/gmock.pc
deleted file mode 100644
index d4242cf..0000000
--- a/mybuild/googlemock/gmock.pc
+++ /dev/null
@@ -1,9 +0,0 @@
-libdir=/usr/local/lib
-includedir=/usr/local/include
-
-Name: gmock
-Description: GoogleMock (without main() function)
-Version: 1.9.0
-URL: https://github.com/google/googletest
-Libs: -L${libdir} -lgmock -pthread
-Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -pthread
diff --git a/mybuild/googlemock/gmock_main.pc b/mybuild/googlemock/gmock_main.pc
deleted file mode 100644
index 2da4fbc..0000000
--- a/mybuild/googlemock/gmock_main.pc
+++ /dev/null
@@ -1,9 +0,0 @@
-libdir=/usr/local/lib
-includedir=/usr/local/include
-
-Name: gmock_main
-Description: GoogleMock (with main() function)
-Version: 1.9.0
-URL: https://github.com/google/googletest
-Libs: -L${libdir} -lgmock_main -pthread
-Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -pthread
diff --git a/mybuild/googlemock/gtest/gtest.pc b/mybuild/googlemock/gtest/gtest.pc
deleted file mode 100644
index a9931b8..0000000
--- a/mybuild/googlemock/gtest/gtest.pc
+++ /dev/null
@@ -1,9 +0,0 @@
-libdir=/usr/local/lib
-includedir=/usr/local/include
-
-Name: gtest
-Description: GoogleTest (without main() function)
-Version: 1.9.0
-URL: https://github.com/google/googletest
-Libs: -L${libdir} -lgtest -pthread
-Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -pthread
diff --git a/mybuild/googlemock/gtest/gtest_main.pc b/mybuild/googlemock/gtest/gtest_main.pc
deleted file mode 100644
index 57948c7..0000000
--- a/mybuild/googlemock/gtest/gtest_main.pc
+++ /dev/null
@@ -1,10 +0,0 @@
-libdir=/usr/local/lib
-includedir=/usr/local/include
-
-Name: gtest_main
-Description: GoogleTest (with main() function)
-Version: 1.9.0
-URL: https://github.com/google/googletest
-Requires: gtest
-Libs: -L${libdir} -lgtest_main -pthread
-Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -pthread
diff --git a/mybuild/googlemock/gtest/libgtest.a b/mybuild/googlemock/gtest/libgtest.a
deleted file mode 100644
index 46029a9..0000000
--- a/mybuild/googlemock/gtest/libgtest.a
+++ /dev/null
Binary files differ
diff --git a/mybuild/googlemock/gtest/libgtest_main.a b/mybuild/googlemock/gtest/libgtest_main.a
deleted file mode 100644
index f76d51c..0000000
--- a/mybuild/googlemock/gtest/libgtest_main.a
+++ /dev/null
Binary files differ
diff --git a/mybuild/googlemock/gtest/sample4_unittest b/mybuild/googlemock/gtest/sample4_unittest
deleted file mode 100755
index b4355c0..0000000
--- a/mybuild/googlemock/gtest/sample4_unittest
+++ /dev/null
Binary files differ