Added tests for invalid number of arguments in function calls

Author: SimonThalvorsen

tests/lint/013_invalid_num_args_func.cf

@@ -0,0 +1,8 @@
+bundle agent main
+{
+vars:
+  "string"
+    string => canonify("test");
+reports:
+ "Test => $(string)";
+}

tests/lint/013_invalid_num_args_func.expected.txt

@@ -0,0 +1,12 @@
+
+  "string1"
+    string => canonify();
+              ^--------^
+Error: Expected 1 arguments, received 0 at tests/lint/013_invalid_num_args_func.x.cf:5:15
+
+  "string3"
+    string => canonify("test", "test");
+              ^----------------------^
+Error: Expected 1 arguments, received 2 at tests/lint/013_invalid_num_args_func.x.cf:9:15
+FAIL: tests/lint/013_invalid_num_args_func.x.cf (2 errors)
+Failure, 2 errors in total.

tests/lint/013_invalid_num_args_func.x.cf

@@ -0,0 +1,14 @@
+bundle agent main
+{
+vars:
+  "string1"
+    string => canonify();
+  "string2"
+    string => canonify("test");
+  "string3"
+    string => canonify("test", "test");
+reports:
+ "Test1 => $(string1)";
+ "Test2 => $(string2)";
+ "Test3 => $(string3)";
+}