Ruby: add test for Receiver in summary

Author: asgerf

ruby/ql/test/library-tests/dataflow/summaries/Summaries.expected

@@ -27,8 +27,10 @@ edges
 | summaries.rb:31:27:31:33 | tainted :  | summaries.rb:31:6:31:34 | call to onlyWithoutBlock |
 | summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:41:24:41:24 | t :  |
 | summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:42:24:42:24 | t :  |
+| summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:44:8:44:8 | t :  |
 | summaries.rb:41:24:41:24 | t :  | summaries.rb:41:8:41:25 | call to matchedByName |
 | summaries.rb:42:24:42:24 | t :  | summaries.rb:42:8:42:25 | call to matchedByName |
+| summaries.rb:44:8:44:8 | t :  | summaries.rb:44:8:44:27 | call to matchedByNameRcv |
 nodes
 | summaries.rb:1:11:1:26 | call to identity :  | semmle.label | call to identity :  |
 | summaries.rb:1:20:1:26 | "taint" :  | semmle.label | "taint" :  |
@@ -62,6 +64,8 @@ nodes
 | summaries.rb:41:24:41:24 | t :  | semmle.label | t :  |
 | summaries.rb:42:8:42:25 | call to matchedByName | semmle.label | call to matchedByName |
 | summaries.rb:42:24:42:24 | t :  | semmle.label | t :  |
+| summaries.rb:44:8:44:8 | t :  | semmle.label | t :  |
+| summaries.rb:44:8:44:27 | call to matchedByNameRcv | semmle.label | call to matchedByNameRcv |
 subpaths
 invalidSpecComponent
 invalidOutputSpecComponent
@@ -81,6 +85,7 @@ invalidOutputSpecComponent
 | summaries.rb:37:36:37:42 | tainted | summaries.rb:1:20:1:26 | "taint" :  | summaries.rb:37:36:37:42 | tainted | $@ | summaries.rb:1:20:1:26 | "taint" :  | "taint" :  |
 | summaries.rb:41:8:41:25 | call to matchedByName | summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:41:8:41:25 | call to matchedByName | $@ | summaries.rb:40:7:40:13 | "taint" :  | "taint" :  |
 | summaries.rb:42:8:42:25 | call to matchedByName | summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:42:8:42:25 | call to matchedByName | $@ | summaries.rb:40:7:40:13 | "taint" :  | "taint" :  |
+| summaries.rb:44:8:44:27 | call to matchedByNameRcv | summaries.rb:40:7:40:13 | "taint" :  | summaries.rb:44:8:44:27 | call to matchedByNameRcv | $@ | summaries.rb:40:7:40:13 | "taint" :  | "taint" :  |
 warning
 | CSV type row should have 5 columns but has 2: test;TooFewColumns |
 | CSV type row should have 5 columns but has 8: test;TooManyColumns;;;Member[Foo].Instance;too;many;columns |

ruby/ql/test/library-tests/dataflow/summaries/Summaries.ql

@@ -75,7 +75,8 @@ private class StepsFromModel extends ModelInput::SummaryModelCsv {
         ";;Member[Foo].Method[secondArg];Argument[1];ReturnValue;taint",
         ";;Member[Foo].Method[onlyWithoutBlock].WithoutBlock;Argument[0];ReturnValue;taint",
         ";;Member[Foo].Method[onlyWithBlock].WithBlock;Argument[0];ReturnValue;taint",
-        ";any;Method[matchedByName];Argument[0];ReturnValue;taint"
+        ";any;Method[matchedByName];Argument[0];ReturnValue;taint",
+        ";any;Method[matchedByNameRcv];Receiver;ReturnValue;taint"
       ]
   }
 }

ruby/ql/test/library-tests/dataflow/summaries/summaries.rb

@@ -41,4 +41,5 @@ def userDefinedFunction(x, y)
   sink(x.matchedByName(t))
   sink(y.matchedByName(t))
   sink(x.unmatchedName(t))
+  sink(t.matchedByNameRcv())
 end