Fix a compile warning with g++ 13.2.0. (#207)

* Fix a compile warning with g++ 13.2.0.

When building the tests with g++ 13.2.0, it complains
that the EXPECT_LONG_DOUBLE_EQ macro has no effect.
That ends up being true; because it is just a x == y,
with no EXPECT statement around it, it actually does
nothing.

Here, I just remove this macro because it is unnecessary;
we can just do EXPECT_TRUE(x == y) and get the same effect
with less code.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>

* Revert "Fix a compile warning with g++ 13.2.0."

This reverts commit 28b32de.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

* Refactor EXPECT_LONG_DOUBLE_EQ.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

* Make expectations be checked.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

---------

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Signed-off-by: Miguel Company <miguelcompany@eprosima.com>
Co-authored-by: Miguel Company <miguelcompany@eprosima.com>

test/cdr/ResizeTest.cpp

@@ -22,8 +22,6 @@
 
 #include <gtest/gtest.h>
 
-#define EXPECT_LONG_DOUBLE_EQ(val1, val2) (val1 == val2)
-
 using namespace eprosima::fastcdr;
 using namespace ::exception;
 
@@ -180,6 +178,13 @@ static void EXPECT_ARRAY_DOUBLE_EQ(
     }
 }
 
+static void EXPECT_LONG_DOUBLE_EQ(
+        const long double val1,
+        const long double val2)
+{
+    EXPECT_TRUE(val1 == val2);
+}
+
 static void EXPECT_ARRAY_LONG_DOUBLE_EQ(
         long double* array1,
         const long double* array2,

test/cdr/SimpleTest.cpp

@@ -25,8 +25,6 @@
 
 #include <gtest/gtest.h>
 
-#define EXPECT_LONG_DOUBLE_EQ(val1, val2) (val1 == val2)
-
 using namespace eprosima::fastcdr;
 using namespace ::exception;
 
@@ -194,6 +192,13 @@ static void EXPECT_ARRAY_DOUBLE_EQ(
     }
 }
 
+static void EXPECT_LONG_DOUBLE_EQ(
+        const long double val1,
+        const long double val2)
+{
+    EXPECT_TRUE(val1 == val2);
+}
+
 static void EXPECT_ARRAY_LONG_DOUBLE_EQ(
         long double* array1,
         const long double* array2,