1 files changed, 89 insertions, 0 deletions
diff --git a/test/ruby/test_nomethod_error.rb b/test/ruby/test_nomethod_error.rb
new file mode 100644
index 0000000000..ed3b826d65
--- /dev/null
+++ b/test/ruby/test_nomethod_error.rb
@@ -0,0 +1,89 @@
+require 'test/unit'
+
+class TestNoMethodError < Test::Unit::TestCase
+  def test_new_default
+    error = NoMethodError.new
+    assert_equal("NoMethodError", error.message)
+  end
+
+  def test_new_message
+    error = NoMethodError.new("Message")
+    assert_equal("Message", error.message)
+  end
+
+  def test_new_name
+    error = NoMethodError.new("Message")
+    assert_nil(error.name)
+
+    error = NoMethodError.new("Message", :foo)
+    assert_equal(:foo, error.name)
+  end
+
+  def test_new_name_args
+    error = NoMethodError.new("Message", :foo)
+    assert_nil(error.args)
+
+    error = NoMethodError.new("Message", :foo, [1, 2])
+    assert_equal([:foo, [1, 2]], [error.name, error.args])
+  end
+
+  def test_new_name_args_priv
+    error = NoMethodError.new("Message", :foo, [1, 2])
+    assert_not_predicate(error, :private_call?)
+
+    error = NoMethodError.new("Message", :foo, [1, 2], true)
+    assert_equal([:foo, [1, 2], true],
+                 [error.name, error.args, error.private_call?])
+  end
+
+  def test_new_receiver
+    receiver = Object.new
+
+    error = NoMethodError.new
+    assert_raise(ArgumentError) {error.receiver}
+
+    error = NoMethodError.new(receiver: receiver)
+    assert_equal(receiver, error.receiver)
+
+    error = NoMethodError.new("Message")
+    assert_raise(ArgumentError) {error.receiver}
+
+    error = NoMethodError.new("Message", receiver: receiver)
+    assert_equal(["Message", receiver],
+                 [error.message, error.receiver])
+
+    error = NoMethodError.new("Message", :foo)
+    assert_raise(ArgumentError) {error.receiver}
+
+    msg = defined?(DidYouMean.formatter) ?
+      "Message\nDid you mean?  for" : "Message"
+
+    error = NoMethodError.new("Message", :foo, receiver: receiver)
+    assert_equal([msg, :foo, receiver],
+                 [error.message, error.name, error.receiver])
+
+    error = NoMethodError.new("Message", :foo, [1, 2])
+    assert_raise(ArgumentError) {error.receiver}
+
+    error = NoMethodError.new("Message", :foo, [1, 2], receiver: receiver)
+    assert_equal([msg, :foo, [1, 2], receiver],
+                 [error.message, error.name, error.args, error.receiver])
+
+    error = NoMethodError.new("Message", :foo, [1, 2], true)
+    assert_raise(ArgumentError) {error.receiver}
+
+    error = NoMethodError.new("Message", :foo, [1, 2], true, receiver: receiver)
+    assert_equal([:foo, [1, 2], true, receiver],
+                 [error.name, error.args, error.private_call?, error.receiver])
+  end
+
+  def test_message_encoding
+    bug3237 = '[ruby-core:29948]'
+    str = "\u2600"
+    id = :"\u2604"
+    msg = "undefined method `#{id}' for \"#{str}\":String"
+    assert_raise_with_message(NoMethodError, msg, bug3237) do
+      str.__send__(id)
+    end
+  end
+end