http_utility_test: fix test case names

This commit applies the GTest test case naming convention: Camel case,
use decriptive Test names.

It also groups test cases according to the name.

Reference:
https://testing.googleblog.com/2014/10/testing-on-toilet-writing-descriptive.html
http://google.github.io/googletest/primer.html#simple-tests

Tested: unit test passes.

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: Ie008ceac9e027b518e660745722ac5cc0af502da
diff --git a/include/ut/http_utility_test.cpp b/include/ut/http_utility_test.cpp
index d091248..c92bf1e 100644
--- a/include/ut/http_utility_test.cpp
+++ b/include/ut/http_utility_test.cpp
@@ -7,15 +7,25 @@
 namespace
 {
 
-TEST(HttpUtility, requestPrefersHtml)
+TEST(RequestPrefersHtml, ContainsHtmlReturnsTrue)
+{
+    EXPECT_TRUE(requestPrefersHtml("text/html, application/json"));
+}
+
+TEST(RequestPrefersHtml, NoHtmlReturnsFalse)
 {
     EXPECT_FALSE(requestPrefersHtml("*/*, application/octet-stream"));
-    EXPECT_TRUE(isOctetAccepted("*/*, application/octet-stream"));
-
-    EXPECT_TRUE(requestPrefersHtml("text/html, application/json"));
-    EXPECT_FALSE(isOctetAccepted("text/html, application/json"));
-
     EXPECT_FALSE(requestPrefersHtml("application/json"));
+}
+
+TEST(IsOctetAccepted, ContainsOctetReturnsTrue)
+{
+    EXPECT_TRUE(isOctetAccepted("*/*, application/octet-stream"));
+}
+
+TEST(IsOctetAccepted, NoOctetReturnsFalse)
+{
+    EXPECT_FALSE(isOctetAccepted("text/html, application/json"));
     EXPECT_FALSE(isOctetAccepted("application/json"));
 }