https://git.ruby-lang.org/ruby.git/commit/?id=ee4ead8098

From ee4ead8098703959353cb81647e4d23bc62fa51b Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 31 Dec 2019 14:28:57 +0900
Subject: Split test_frozen_error.rb


diff --git a/test/ruby/test_exception.rb b/test/ruby/test_exception.rb
index 8445f85..8a60faf 100644
--- a/test/ruby/test_exception.rb
+++ b/test/ruby/test_exception.rb
@@ -835,56 +835,6 @@ end.join https://github.com/ruby/ruby/blob/trunk/test/ruby/test_exception.rb#L835
       alias inspect pretty_inspect
     end
 
-  def test_frozen_error_receiver
-    obj = Object.new.freeze
-    e = assert_raise(FrozenError) {def obj.foo; end}
-    assert_same(obj, e.receiver)
-    e = assert_raise(FrozenError) {obj.singleton_class.const_set(:A, 2)}
-    assert_same(obj.singleton_class, e.receiver)
-  end
-
-  def test_frozen_error_initialize
-    obj = Object.new
-    exc = FrozenError.new("bar", receiver: obj)
-    assert_equal("bar", exc.message)
-    assert_same(obj, exc.receiver)
-
-    exc = FrozenError.new("bar")
-    assert_equal("bar", exc.message)
-    assert_raise_with_message(ArgumentError, "no receiver is available") {
-      exc.receiver
-    }
-
-    exc = FrozenError.new
-    assert_equal("FrozenError", exc.message)
-    assert_raise_with_message(ArgumentError, "no receiver is available") {
-      exc.receiver
-    }
-  end
-
-  def test_frozen_error_message
-    obj = Object.new.freeze
-    e = assert_raise_with_message(FrozenError, /can't modify frozen #{obj.class}/) {
-      obj.instance_variable_set(:@test, true)
-    }
-    assert_include(e.message, obj.inspect)
-
-    klass = Class.new do
-      def init
-        @x = true
-      end
-      def inspect
-        init
-        super
-      end
-    end
-    obj = klass.new.freeze
-    e = assert_raise_with_message(FrozenError, /can't modify frozen #{obj.class}/) {
-      obj.init
-    }
-    assert_include(e.message, klass.inspect)
-  end
-
   def test_name_error_new_default
     error = NameError.new
     assert_equal("NameError", error.message)
diff --git a/test/ruby/test_frozen_error.rb b/test/ruby/test_frozen_error.rb
new file mode 100644
index 0000000..ace1e4c
--- /dev/null
+++ b/test/ruby/test_frozen_error.rb
@@ -0,0 +1,57 @@ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_frozen_error.rb#L1
+require 'test/unit'
+
+class TestFrozenError < Test::Unit::TestCase
+  def test_new_default
+    exc = FrozenError.new
+    assert_equal("FrozenError", exc.message)
+    assert_raise_with_message(ArgumentError, "no receiver is available") {
+      exc.receiver
+    }
+  end
+
+  def test_new_message
+    exc = FrozenError.new("bar")
+    assert_equal("bar", exc.message)
+    assert_raise_with_message(ArgumentError, "no receiver is available") {
+      exc.receiver
+    }
+  end
+
+  def test_new_receiver
+    obj = Object.new
+    exc = FrozenError.new("bar", receiver: obj)
+    assert_equal("bar", exc.message)
+    assert_same(obj, exc.receiver)
+  end
+
+  def test_message
+    obj = Object.new.freeze
+    e = assert_raise_with_message(FrozenError, /can't modify frozen #{obj.class}/) {
+      obj.instance_variable_set(:@test, true)
+    }
+    assert_include(e.message, obj.inspect)
+
+    klass = Class.new do
+      def init
+        @x = true
+      end
+      def inspect
+        init
+        super
+      end
+    end
+    obj = klass.new.freeze
+    e = assert_raise_with_message(FrozenError, /can't modify frozen #{obj.class}/) {
+      obj.init
+    }
+    assert_include(e.message, klass.inspect)
+  end
+
+  def test_receiver
+    obj = Object.new.freeze
+    e = assert_raise(FrozenError) {def obj.foo; end}
+    assert_same(obj, e.receiver)
+    e = assert_raise(FrozenError) {obj.singleton_class.const_set(:A, 2)}
+    assert_same(obj.singleton_class, e.receiver)
+  end
+end
-- 
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