From 0fdbd8c74984025098fa8c07d1dfbcd57a4dff6b Mon Sep 17 00:00:00 2001
From: Le1gh <Leigharber@gmail.com>
Date: Wed, 9 Dec 2020 13:17:52 -0600
Subject: [PATCH] Flesh out Image#clone (#1251)

---
 spec/rmagick/image/clone_spec.rb | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/spec/rmagick/image/clone_spec.rb b/spec/rmagick/image/clone_spec.rb
index d7cff4dce..8fc8f7ddc 100644
--- a/spec/rmagick/image/clone_spec.rb
+++ b/spec/rmagick/image/clone_spec.rb
@@ -1,15 +1,28 @@
 RSpec.describe Magick::Image, "#clone" do
-  it "works" do
-    image = described_class.new(20, 20)
+  it "returns a new copy of the image" do
+    image = build_image
 
-    result = image.clone
-    expect(result).to be_instance_of(described_class)
-    expect(image).to eq(result)
+    new_image = image.clone
+
+    expect(new_image).to eq(image)
+    expect(new_image).not_to be(image)
+    expect(new_image.export_pixels).to eq(image.export_pixels)
+  end
+
+  it "returns a non-frozen copy of the image when it is not frozen" do
+    image = build_image
+
+    new_image = image.clone
+
+    expect(new_image.frozen?).to be(false)
+  end
+
+  it "returns a frozen copy of the image when it is frozen" do
+    image = build_image
 
-    result = image.clone
-    expect(image.frozen?).to eq(result.frozen?)
     image.freeze
-    result = image.clone
-    expect(image.frozen?).to eq(result.frozen?)
+    new_image = image.clone
+
+    expect(new_image.frozen?).to be(true)
   end
 end