[2376] Split cases for add and issue tests

Use separate boolean variables to distinguish if the add callback or an
issue callback was called. The previous did not really ensure the
correct one was called.

src/lib/dns/tests/loader_callbacks_test.cc

@@ -30,7 +30,8 @@ using namespace isc::dns;
 class LoaderCallbacksTest : public ::testing::Test {
 protected:
     LoaderCallbacksTest() :
-        called_(false),
+        issue_called_(false),
+        add_called_(false),
         rrset_(new RRset(Name("example.org"), RRClass::IN(), RRType::A(),
                          RRTTL(3600))),
         error_(boost::bind(&LoaderCallbacksTest::checkCallback, this, true, _1,
@@ -44,18 +45,18 @@ protected:
     void checkCallback(bool error, const string& source, size_t line,
                        const string& reason)
     {
-        called_ = true;
+        issue_called_ = true;
         last_was_error_ = error;
         EXPECT_EQ("source", source);
         EXPECT_EQ(1, line);
         EXPECT_EQ("reason", reason);
     }
     void checkAdd(const RRsetPtr& rrset) {
-        called_ = true;
+        add_called_ = true;
         EXPECT_EQ(rrset_, rrset);
     }
     bool last_was_error_;
-    bool called_;
+    bool issue_called_, add_called_;
     const RRsetPtr rrset_;
     const LoaderCallbacks::IssueCallback error_, warning_;
     const LoaderCallbacks::AddCallback add_;
@@ -78,20 +79,20 @@ TEST_F(LoaderCallbacksTest, constructor) {
 TEST_F(LoaderCallbacksTest, issueCall) {
     callbacks_.error("source", 1, "reason");
     EXPECT_TRUE(last_was_error_);
-    EXPECT_TRUE(called_);
+    EXPECT_TRUE(issue_called_);
 
-    called_ = false;
+    issue_called_ = false;
 
     callbacks_.warning("source", 1, "reason");
     EXPECT_FALSE(last_was_error_);
-    EXPECT_TRUE(called_);
+    EXPECT_TRUE(issue_called_);
 }
 
 // Call the add callback
 TEST_F(LoaderCallbacksTest, addCall) {
-    EXPECT_FALSE(called_);
+    EXPECT_FALSE(issue_called_);
     callbacks_.addRRset(rrset_);
-    EXPECT_TRUE(called_);
+    EXPECT_TRUE(add_called_);
 }