Added tests for callref with sav

New tests in `tests/test_callref.nit`

Signed-off-by: Louis-Vincent Boudreault <lv.boudreault95@gmail.com>

Author: lvboudre

tests/sav/test_callref.res

@@ -0,0 +1,13 @@
+in A::fun1
+in B::fun1
+100
+in B::fun1
+in B::fun1
+in B::fun1
+110
+3
+5
+x is null
+x is null
+x is test
+x is 100

src/test_callref.nit renamed to tests/test_callref.nit

@@ -1,7 +1,5 @@
 # This file is part of NIT ( http://www.nitlanguage.org ).
 #
-# Copyright 2019-2020 Louis-Vincent Boudreault <lv.boudreault95@gmail.com>
-#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
@@ -63,42 +61,44 @@ end
 
 var a = new A
 var b: A = new B
+
 var f1 = &a.fun1
-assert f1.call == "in A::fun1"
+print f1.call	# "in A::fun1"
+
 var f2 = &b.fun1
-assert f2.call == "in B::fun1"
+print f2.call	# "in B::fun1"
 
 var f3 = &10.mult_by
-assert f3.call(10) == 100
+print f3.call(10)	# 100
 
 var f4 = &f2.call
-assert f4.call == "in B::fun1"
+print f4.call	# "in B::fun1"
 
 var f5: Fun0[Object] = &f4.call
-assert f5.call == "in B::fun1"
-assert f5.call == "in B::fun1"
+print f5.call
+print f5.call
 
-assert (&10.toto).call(100) == 110
-assert (&"allo".toto).call(1) == 2
+print((&10.toto).call(100))	# 110
+print((&"allo".toto).call(2))	# 3
 
 var cnt = new Counter
 var p1 = &cnt.incr
 var ps = [p1,p1,p1,p1,p1]
 
 for p in ps do p.call
-assert cnt.x == 5
+print cnt.x	# 5
 
 var c1 = new C[nullable Object](null)
 var c2 = new C[nullable Int](null)
 
 var f6 = &c1.to_s
 var f7 = &c2.to_s
 
-assert f6.call == "x is null"
-assert f7.call == "x is null"
+print f6.call	# "x is null"
+print f7.call	# "x is null"
 
 c1.x = "test"
 c2.x = 100
 
-assert f6.call == "x is test"
-assert f7.call == "x is 100"
+print f6.call	# "x is test"
+print f7.call	# "x is 100"