[t] We now pass 28-subclass.t.

t/nqp/28-subclass.t

@@ -0,0 +1,33 @@
+#! nqp
+
+# class inheritance
+
+plan(6);
+
+class ABC {
+    method foo() {
+        say('ok 1');
+    }
+
+    method bar() {
+        say('ok 3');
+    }
+}
+
+class XYZ is ABC {
+    method foo() {
+        say('ok 2');
+    }
+}
+
+
+my $abc := ABC.new();
+my $xyz := XYZ.new();
+
+$abc.foo();
+$xyz.foo();
+$xyz.bar();
+my $xyzhow := $xyz.HOW;
+if $xyzhow.isa($xyz, ABC) { say('ok 4') }
+if $xyzhow.isa($xyz, XYZ) { say('ok 5') }
+say( $abc.HOW.isa($abc, XYZ) ?? 'not ok 6' !! 'ok 6' );