Add tests for CATCH_CONFIG_DISABLE

projects/ExtraTests/X02-DisabledMacros.cpp

@@ -0,0 +1,31 @@
+// X02-DisabledMacros.cpp
+// Test that CATCH_CONFIG_DISABLE turns off TEST_CASE autoregistration
+// and expressions in assertion macros are not run.
+
+#define CATCH_CONFIG_MAIN
+#include <catch2/catch.hpp>
+
+
+// CATCH_CONFIG_DISABLE also prevents reporter registration.
+// We need to manually register at least one reporter for our tests
+static Catch::ReporterRegistrar<Catch::ConsoleReporter> temporary( "console" );
+
+#include <iostream>
+
+struct foo {
+    foo(){
+        REQUIRE_NOTHROW( print() );
+    }
+    void print() const {
+        std::cout << "This should not happen\n";
+    }
+};
+
+// Construct foo, but `foo::print` should not be run
+foo f;
+
+// This test should not be run, because it won't be registered
+TEST_CASE( "Disabled Macros" ) {
+    std::cout << "This should not happen\n";
+    FAIL();
+}