Improves conformance to the Google C++ Style Guide (by Greg Miller).

samples/sample10_unittest.cc

@@ -89,8 +89,7 @@ class LeakChecker : public EmptyTestEventListener {
     // You can generate a failure in any event handler except
     // OnTestPartResult. Just use an appropriate Google Test assertion to do
     // it.
-    EXPECT_TRUE(difference <= 0)
-        << "Leaked " << difference << " unit(s) of Water!";
+    EXPECT_LE(difference, 0) << "Leaked " << difference << " unit(s) of Water!";
   }
 
   int initially_allocated_;

samples/sample1_unittest.cc

@@ -81,7 +81,7 @@ TEST(FactorialTest, Negative) {
   // test case.
   EXPECT_EQ(1, Factorial(-5));
   EXPECT_EQ(1, Factorial(-1));
-  EXPECT_TRUE(Factorial(-10) > 0);
+  EXPECT_GT(Factorial(-10), 0);
 
   // <TechnicalDetails>
   //

samples/sample2.h

@@ -44,7 +44,6 @@ class MyString {
   const MyString& operator=(const MyString& rhs);
 
  public:
-
   // Clones a 0-terminated C string, allocating memory using new.
   static const char* CloneCString(const char* a_c_string);
 

samples/sample2_unittest.cc

@@ -79,7 +79,7 @@ const char kHelloString[] = "Hello, world!";
 // Tests the c'tor that accepts a C string.
 TEST(MyString, ConstructorFromCString) {
   const MyString s(kHelloString);
-  EXPECT_TRUE(strcmp(s.c_string(), kHelloString) == 0);
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
   EXPECT_EQ(sizeof(kHelloString)/sizeof(kHelloString[0]) - 1,
             s.Length());
 }
@@ -88,7 +88,7 @@ TEST(MyString, ConstructorFromCString) {
 TEST(MyString, CopyConstructor) {
   const MyString s1(kHelloString);
   const MyString s2 = s1;
-  EXPECT_TRUE(strcmp(s2.c_string(), kHelloString) == 0);
+  EXPECT_EQ(0, strcmp(s2.c_string(), kHelloString));
 }
 
 // Tests the Set method.
@@ -96,12 +96,12 @@ TEST(MyString, Set) {
   MyString s;
 
   s.Set(kHelloString);
-  EXPECT_TRUE(strcmp(s.c_string(), kHelloString) == 0);
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
 
   // Set should work when the input pointer is the same as the one
   // already in the MyString object.
   s.Set(s.c_string());
-  EXPECT_TRUE(strcmp(s.c_string(), kHelloString) == 0);
+  EXPECT_EQ(0, strcmp(s.c_string(), kHelloString));
 
   // Can we set the MyString to NULL?
   s.Set(NULL);

samples/sample3-inl.h

@@ -60,7 +60,7 @@ class QueueNode {
  private:
   // Creates a node with a given element value.  The next pointer is
   // set to NULL.
-  QueueNode(const E& an_element) : element_(an_element), next_(NULL) {}
+  explicit QueueNode(const E& an_element) : element_(an_element), next_(NULL) {}
 
   // We disable the default assignment operator and copy c'tor.
   const QueueNode& operator = (const QueueNode&);
@@ -72,8 +72,7 @@ class QueueNode {
 
 template <typename E>  // E is the element type.
 class Queue {
-public:
-
+ public:
   // Creates an empty queue.
   Queue() : head_(NULL), last_(NULL), size_(0) {}
 
@@ -168,6 +167,6 @@ public:
   // We disallow copying a queue.
   Queue(const Queue&);
   const Queue& operator = (const Queue&);
- };
+};
 
 #endif  // GTEST_SAMPLES_SAMPLE3_INL_H_

samples/sample5_unittest.cc

@@ -101,7 +101,7 @@ TEST_F(IntegerFunctionTest, Factorial) {
   // Tests factorial of negative numbers.
   EXPECT_EQ(1, Factorial(-5));
   EXPECT_EQ(1, Factorial(-1));
-  EXPECT_TRUE(Factorial(-10) > 0);
+  EXPECT_GT(Factorial(-10), 0);
 
   // Tests factorial of 0.
   EXPECT_EQ(1, Factorial(0));