documenttest.cpp: check/use conversion from Document to ParseResult

test/unittest/documenttest.cpp

@@ -28,6 +28,7 @@ void ParseCheck(DocumentType& doc) {
     typedef typename DocumentType::ValueType ValueType;
 
     EXPECT_FALSE(doc.HasParseError());
+    EXPECT_TRUE((ParseResult)doc);
 
     EXPECT_TRUE(doc.IsObject());
 
@@ -99,13 +100,18 @@ TEST(Document, UnchangedOnParseError) {
     Document doc;
     doc.SetArray().PushBack(0, doc.GetAllocator());
 
-    doc.Parse("{]");
+    ParseResult err = doc.Parse("{]");
     EXPECT_TRUE(doc.HasParseError());
+    EXPECT_EQ(err.Code(), doc.GetParseError());
+    EXPECT_EQ(err.Offset(), doc.GetErrorOffset());
     EXPECT_TRUE(doc.IsArray());
     EXPECT_EQ(doc.Size(), 1u);
 
-    doc.Parse("{}");
+    err = doc.Parse("{}");
     EXPECT_FALSE(doc.HasParseError());
+    EXPECT_FALSE(err.IsError());
+    EXPECT_EQ(err.Code(), doc.GetParseError());
+    EXPECT_EQ(err.Offset(), doc.GetErrorOffset());
     EXPECT_TRUE(doc.IsObject());
     EXPECT_EQ(doc.MemberCount(), 0u);
 }