Add to_uppercase tests (#48)

Signed-off-by: RaulSanchez <raul@eprosima.com>

Author: rsanchez15

cpp_utils/test/unittest/macros/recursiveMacrosTest.cpp

@@ -115,6 +115,23 @@ TEST(recursiveMacrosTest, apply_macro_for_each)
         ASSERT_EQ(hello, "hello");
         ASSERT_EQ(bye, "bye");
     }
+
+#define TO_UPPERCASE(x) eprosima::utils::to_uppercase(x);
+
+    // string concatenation
+    {
+        std::string hello = "hello";
+        std::string bye = "ByE";
+
+        APPLY_MACRO_FOR_EACH(
+            TO_UPPERCASE,
+            hello,
+            bye
+            );
+
+        ASSERT_EQ(hello, "HELLO");
+        ASSERT_EQ(bye, "BYE");
+    }
 }
 
 int main(

cpp_utils/test/unittest/utils/CMakeLists.txt

@@ -28,6 +28,7 @@ set(TEST_LIST
         set_of_ptr_contains_string
         are_set_of_ptr_equal_int
         to_lowercase
+        to_uppercase
         tsnh_call
         is_file_accessible
         combined_file_permissions

cpp_utils/test/unittest/utils/utilsTest.cpp

@@ -328,6 +328,37 @@ TEST(utilsTest, to_lowercase)
     }
 }
 
+/**
+ * Test \c to_uppercase call
+ */
+TEST(utilsTest, to_uppercase)
+{
+    // Uppercase
+    {
+        std::string str = "FOO";
+        to_uppercase(str);
+        ASSERT_EQ(str, "FOO");
+    }
+    // Invariant
+    {
+        std::string str = "foo";
+        to_uppercase(str);
+        ASSERT_EQ(str, "FOO");
+    }
+    // With non-letter characters
+    {
+        std::string str = "!_-.,FoO";
+        to_uppercase(str);
+        ASSERT_EQ(str, "!_-.,FOO");
+    }
+    // Empty
+    {
+        std::string str = "";
+        to_uppercase(str);
+        ASSERT_EQ(str, "");
+    }
+}
+
 /**
  * Test \c tsnh call
  */