refactor(dynamic): add recursive dependency resolution for Java, Go, and Ruby receivers, expand corresponding tests

tests/dynamic_fixtures/class_method/ruby_recursive_deps/benign.rb

@@ -0,0 +1,26 @@
+# Benign control for recursively constructed Ruby dependencies.
+class ShellRunner
+  def run(command)
+    command.gsub('NYX_PWN_CMDI', '')
+  end
+end
+
+class UserRepository
+  def initialize(shell_runner)
+    @shell_runner = shell_runner
+  end
+
+  def find(input)
+    @shell_runner.run(input)
+  end
+end
+
+class UserService
+  def initialize(user_repository)
+    @user_repository = user_repository
+  end
+
+  def run(input)
+    @user_repository.find(input)
+  end
+end

tests/dynamic_fixtures/class_method/ruby_recursive_deps/vuln.rb

@@ -0,0 +1,26 @@
+# Class-method fixture with recursively constructed Ruby dependencies.
+class ShellRunner
+  def run(command)
+    `true #{command}`
+  end
+end
+
+class UserRepository
+  def initialize(shell_runner)
+    @shell_runner = shell_runner
+  end
+
+  def find(input)
+    @shell_runner.run(input)
+  end
+end
+
+class UserService
+  def initialize(user_repository)
+    @user_repository = user_repository
+  end
+
+  def run(input)
+    @user_repository.find(input)
+  end
+end