Ruby: more test cases for code injection via method

Author: p-

ruby/ql/test/library-tests/frameworks/core/Kernel.expected

@@ -46,6 +46,9 @@ methodCallCodeExecutions
 | Kernel.rb:92:1:92:14 | call to method | Kernel.rb:92:8:92:13 | "exit" |
 | Kernel.rb:93:1:93:21 | call to public_method | Kernel.rb:93:15:93:20 | "exit" |
 | Kernel.rb:94:1:94:23 | call to singleton_method | Kernel.rb:94:18:94:22 | "foo" |
+| Kernel.rb:96:1:96:18 | call to method | Kernel.rb:96:12:96:17 | "exit" |
+| Kernel.rb:97:1:97:25 | call to public_method | Kernel.rb:97:19:97:24 | "exit" |
+| Kernel.rb:98:1:98:27 | call to singleton_method | Kernel.rb:98:22:98:26 | "foo" |
 evalCallCodeExecutions
 | Eval.rb:3:1:3:43 | call to eval | Eval.rb:3:6:3:22 | "raise \\"error\\"" |
 | Kernel.rb:1:1:1:43 | call to eval | Kernel.rb:1:6:1:22 | "raise \\"error\\"" |

ruby/ql/test/library-tests/frameworks/core/Kernel.rb

@@ -92,3 +92,7 @@ def run
 method("exit").call
 public_method("exit").call
 singleton_method("foo").call
+
+Foo.method("exit").call
+Foo.public_method("exit").call
+Foo.singleton_method("foo").call