1 files changed, 62 insertions, 0 deletions
diff --git a/spec/rubyspec/core/exception/receiver_spec.rb b/spec/rubyspec/core/exception/receiver_spec.rb
new file mode 100644
index 0000000000..83f8d5927c
--- /dev/null
+++ b/spec/rubyspec/core/exception/receiver_spec.rb
@@ -0,0 +1,62 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/common', __FILE__)
+
+ruby_version_is "2.3" do
+  describe "NameError#receiver" do
+    class ::ReceiverClass
+      def call_undefined_class_variable; @@doesnt_exist end
+    end
+
+    it "returns the object that raised the exception" do
+      receiver = Object.new
+
+      -> {
+        receiver.doesnt_exist
+      }.should raise_error(NameError) {|e| e.receiver.should equal(receiver) }
+    end
+
+    it "returns the Object class when an undefined constant is called without namespace" do
+      -> {
+        DoesntExist
+      }.should raise_error(NameError) {|e| e.receiver.should equal(Object) }
+    end
+
+    it "returns a class when an undefined constant is called" do
+      -> {
+        NameErrorSpecs::ReceiverClass::DoesntExist
+      }.should raise_error(NameError) {|e| e.receiver.should equal(NameErrorSpecs::ReceiverClass) }
+    end
+
+    it "returns the Object class when an undefined class variable is called" do
+      -> {
+        -> {
+          @@doesnt_exist
+        }.should complain(/class variable access from toplevel/)
+      }.should raise_error(NameError) {|e| e.receiver.should equal(Object) }
+    end
+
+    it "returns a class when an undefined class variable is called in a subclass' namespace" do
+      -> {
+        NameErrorSpecs::ReceiverClass.new.call_undefined_class_variable
+      }.should raise_error(NameError) {|e| e.receiver.should equal(NameErrorSpecs::ReceiverClass) }
+    end
+
+    it "returns the receiver when raised from #instance_variable_get" do
+      receiver = Object.new
+
+      -> {
+        receiver.instance_variable_get("invalid_ivar_name")
+      }.should raise_error(NameError) {|e| e.receiver.should equal(receiver) }
+    end
+
+    it "returns the receiver when raised from #class_variable_get" do
+      -> {
+        Object.class_variable_get("invalid_cvar_name")
+      }.should raise_error(NameError) {|e| e.receiver.should equal(Object) }
+    end
+
+    it "raises an ArgumentError when the receiver is none" do
+      -> { NameError.new.receiver }.should raise_error(ArgumentError)
+    end
+  end
+end