Added test

test/for.tm

@@ -0,0 +1,49 @@
+
+func all_nums(nums:[Int])->Text
+	result := ""
+	for num in nums
+		result ++= "{num},"
+	else
+		return "EMPTY"
+	return result
+
+>> all_nums([10,20,30])
+= "10,20,30,"
+>> all_nums([:Int])
+= "EMPTY"
+
+func labeled_nums(nums:[Int])->Text
+	result := ""
+	for i,num in nums
+		result ++= "{i}:{num},"
+	else
+		return "EMPTY"
+	return result
+
+>> labeled_nums([10,20,30])
+= "1:10,2:20,3:30,"
+>> labeled_nums([:Int])
+= "EMPTY"
+
+func table_str(t:{Text=>Text})->Text
+	str := ""
+	for k,v in t
+		str ++= "{k}=>{v},"
+	else return "EMPTY"
+	return str
+
+>> t := {"key1"=>"value1", "key2"=>"value2"}
+>> table_str(t)
+= "key1=>value1,key2=>value2,"
+>> table_str({:Text=>Text})
+= "EMPTY"
+
+func table_key_str(t:{Text=>Text})->Text
+	str := ""
+	for k in t
+		str ++= "{k},"
+	else return "EMPTY"
+	return str
+
+>> table_key_str(t)
+= "key1,key2,"