Add code coverage badge to README

And add test case to increase coverage.

README.md

@@ -1,4 +1,4 @@
-# mw::Signal [![CI build](https://github.com/mwthinker/Signal/actions/workflows/ci.yml/badge.svg)](https://github.com/mwthinker/Signal/actions/workflows/ci.yml)
+# mw::Signal [![CI build](https://github.com/mwthinker/Signal/actions/workflows/ci.yml/badge.svg)](https://github.com/mwthinker/Signal/actions/workflows/ci.yml) [![codecov](https://codecov.io/gh/mwthinker/Signal/graph/badge.svg?token=6JHBM2BKC4)](https://codecov.io/gh/mwthinker/Signal)
 
 A header only Signal Slot library inspired by the corresponding boost library.
 

Signal_Test/src/signaltests.cpp

@@ -41,6 +41,40 @@ TEST_F(SignalTest, connectionAdded_thenSignalNotEmpty) {
 	EXPECT_EQ(1, signal.size());
 }
 
+TEST_F(SignalTest, connectionAssignedCopiedAndDisconnected_thenCopiedConnectionIsDisconnected) {
+	// Given.
+	mw::Signal signal;
+
+	// When.
+	auto connection = signal.connect(emptyCallback);
+	EXPECT_TRUE(connection.connected());
+	mw::signals::Connection copiedConnection;
+	EXPECT_FALSE(copiedConnection.connected());
+	copiedConnection = connection;
+	EXPECT_TRUE(copiedConnection.connected());
+	copiedConnection.disconnect();
+
+	// Then.
+	EXPECT_FALSE(connection.connected());
+	EXPECT_FALSE(copiedConnection.connected());
+}
+
+TEST_F(SignalTest, connectionConstuctorCopiedAndDisconnected_thenCopiedConnectionIsDisconnected) {
+	// Given.
+	mw::Signal signal;
+
+	// When.
+	auto connection = signal.connect(emptyCallback);
+	EXPECT_TRUE(connection.connected());
+	mw::signals::Connection copiedConnection = connection;
+	EXPECT_TRUE(copiedConnection.connected());
+	copiedConnection.disconnect();
+
+	// Then.
+	EXPECT_FALSE(connection.connected());
+	EXPECT_FALSE(copiedConnection.connected());
+}
+
 TEST_F(SignalTest, connectionsAdded_thenSignalHasCorrectSize) {
 	// Given.
 	mw::Signal signal;