commit 17d984c7938f9dbffb93c04195522742b4877244
author Viktor Kirilov <vik.kirilov@gmail.com> Fri Dec 04 15:13:33 2020 +0200
committer onqtam <vik.kirilov@gmail.com> Tue Dec 15 21:02:46 2020 +0200
tree 6fd8bbb16ac0c1eea81aa86463d00171afa4499e
parent 5e7c34076dad5afadef970103fcb2d49f48d0693

switched from using the << operator to the comma operator for all logging - this solves the problem in PR #431

examples/all_features/stringification.cpp

diff --git a/examples/all_features/stringification.cpp b/examples/all_features/stringification.cpp
index abce6bb..d1118cc 100644
--- a/examples/all_features/stringification.cpp
+++ b/examples/all_features/stringification.cpp
@@ -77,6 +77,28 @@
 
 // as a third option you may provide an overload of toString()
 inline doctest::String toString(const Foo&) { return "Foo{}"; }
+
+struct MyStringType
+{
+    std::string s;
+    template <size_t N> MyStringType(const char (&in)[N]) : s(in, in + N) {}
+    friend bool operator==(const MyStringType &lhs, const MyStringType &rhs) { return lhs.s == rhs.s; }
+};
+
+// you can use the stream.write() method to write blocks of characters, and
+// you also can use a template operator<< if your code does not use
+// std::ostream and you'd like to avoid the include
+template <class OStream>
+OStream& operator<<(OStream& stream, const MyStringType& in) {
+    // the terminating \0 character may be present in size()
+    auto size = in.s.size() > 0u ? in.s.size() - 1u : 0u;
+    const char quote = '\'';
+    stream.write(&quote, 1u);
+    stream.write(in.s.data(), static_cast<unsigned>(size));
+    stream.write(&quote, 1u);
+    return stream;
+}
+
 } // namespace Bar
 
 // set an exception translator for MyTypeInherited<int>
@@ -127,6 +149,18 @@
 
     CHECK(lst_1 == lst_2);
 
+    {
+        // use of ostream::write() is possible:
+        Bar::MyStringType s1 = "some";
+        Bar::MyStringType s2 = "contents";
+
+        // also inside the message builder
+        INFO("s1=", s1, " s2=", s2);
+
+        CHECK(s1 == s2);
+        CHECK_MESSAGE(s1 == s2, s1, " is not really ", s2);
+    }
+
     // lets see if this exception gets translated
     throw_if(true, bla1);
 }