generateAssignmentSource assigns interface methods to iface dest

generator/assignment.go

@@ -81,7 +81,7 @@ func (this *generator) generateAssignmentSource (
 			// assign behaviors
 			for _, name := range toBase.BehaviorOrder {
 				toBehaviorField   := this.getInterfaceBehavior (
-					toBase, source,
+					toBase, destination,
 					irToType, name)
 				fromBehavior, err := this.method(fromReferenced.Name, name)
 				if err != nil { return nil, err }
@@ -102,7 +102,7 @@ func (this *generator) generateAssignmentSource (
 			// assign behaviors
 			for _, name := range toBase.BehaviorOrder {
 				toBehaviorField   := this.getInterfaceBehavior (
-					toBase, source,
+					toBase, destination,
 					irToType, name)
 				fromBehavior, err := this.method(fromType.Name, name)
 				if err != nil { return nil, err }

generator/interface_test.go

@@ -0,0 +1,20 @@
+package generator
+
+import "testing"
+
+func TestInterfaceBasic (test *testing.T) {
+testString (test,
+`
+`,
+`
+Numbered: ([number]: Int)
+Number: Int
+Number.[number]: Int = [.this]
+
+[main]:Index = {
+	num:Number = 5
+	if:Numbered = num
+	if.[number]
+}
+`)
+}