Added tests for invalid number of arguments in function calls

Author: SimonThalvorsen

tests/lint/013_invalid_num_args_func.cf

@@ -0,0 +1,26 @@
+bundle agent main
+{
+vars:
+  "users1"
+    slist => getusers(); # This is valid, zero args will not filter any, not caught at all, syntax-desc shows 2 params
+  "users2"
+    slist => getusers("a");
+  "users3"
+    slist => getusers("a", "b");
+  "users4"
+    slist => getusers("a", "b", "c", "d"); # This is allowed to run, but the c and d gets ignored
+  "file1"
+    string => readfile(); # Should fail
+  "file2"
+    string => readfile("/tmp/tmp.txt"); # Valid
+  "file3"
+    string => readfile("/tmp/tmp.txt", "100", "/tmp/tmp2.txt"); # Valid but shouldnt be, tmp2 gets ignored
+reports:
+ "found user1 $(users1)";
+ "found user2 $(users2)";
+ "found user3 $(users3)";
+ "found user4 $(users4)";
+ "found file1 $(file1)";
+ "found file2 $(file2)";
+ "found file3 $(file3)";
+}