Fix test case

Author: aibaars

ql/test/library-tests/dataflow/api-graphs/test1.rb

@@ -5,7 +5,8 @@
 Object::Kernel.print(e)  #$ use=moduleImport("Kernel").getReturn("print")
 begin
     print MyModule.bar #$ use=moduleImport("MyModule").getReturn("bar")
-rescue AttributeError => e #$ use=moduleImport("AttributeError") // missing because there is no dataflow Node for AttributeError
+    raise AttributeError #$ use=moduleImport("AttributeError")
+rescue AttributeError => e #$ use=moduleImport("AttributeError")
     Kernel.print(e)  #$ use=moduleImport("Kernel").getReturn("print")
 end
 Unknown.new.run #$ use=moduleImport("Unknown").instance.getReturn("run")

ql/test/library-tests/dataflow/api-graphs/use.expected

@@ -1,2 +0,0 @@
-| test1.rb:8:28:8:128 | #$ use=moduleImport("AttributeError") // missing because there is no dataflow Node for AttributeError | Missing result:use=moduleImport("AttributeError") |
-| test1.rb:9:22:9:69 | #$ use=moduleImport("Kernel").getReturn("print") | Missing result:use=moduleImport("Kernel").getReturn("print") |

ql/test/library-tests/dataflow/api-graphs/use.ql

@@ -32,4 +32,4 @@ class ApiUseTest extends InlineExpectationsTest {
   }
 }
 
-private int size(AstNode n) { result = count(n.getAChild*()) }
+private int size(AstNode n) { not n instanceof StmtSequence and result = count(n.getAChild*()) }