1 files changed, 61 insertions, 0 deletions
diff --git a/spec/ruby/shared/string/end_with.rb b/spec/ruby/shared/string/end_with.rb
new file mode 100644
index 0000000000..08f43c1bce
--- /dev/null
+++ b/spec/ruby/shared/string/end_with.rb
@@ -0,0 +1,61 @@
+describe :end_with, shared: true do
+  # the @method should either be :to_s or :to_sym
+
+  it "returns true only if ends match" do
+    s = "hello".send(@method)
+    s.should.end_with?('o')
+    s.should.end_with?('llo')
+  end
+
+  it 'returns false if the end does not match' do
+    s = 'hello'.send(@method)
+    s.should_not.end_with?('ll')
+  end
+
+  it "returns true if the search string is empty" do
+    "hello".send(@method).should.end_with?("")
+    "".send(@method).should.end_with?("")
+  end
+
+  it "returns true only if any ending match" do
+    "hello".send(@method).should.end_with?('x', 'y', 'llo', 'z')
+  end
+
+  it "converts its argument using :to_str" do
+    s = "hello".send(@method)
+    find = mock('o')
+    find.should_receive(:to_str).and_return("o")
+    s.should.end_with?(find)
+  end
+
+  it "ignores arguments not convertible to string" do
+    "hello".send(@method).should_not.end_with?()
+    -> { "hello".send(@method).end_with?(1) }.should raise_error(TypeError)
+    -> { "hello".send(@method).end_with?(["o"]) }.should raise_error(TypeError)
+    -> { "hello".send(@method).end_with?(1, nil, "o") }.should raise_error(TypeError)
+  end
+
+  it "uses only the needed arguments" do
+    find = mock('h')
+    find.should_not_receive(:to_str)
+    "hello".send(@method).should.end_with?("o", find)
+  end
+
+  it "works for multibyte strings" do
+    "céréale".send(@method).should.end_with?("réale")
+  end
+
+  it "raises an Encoding::CompatibilityError if the encodings are incompatible" do
+    pat = "ア".encode Encoding::EUC_JP
+    -> do
+      "あれ".send(@method).end_with?(pat)
+    end.should raise_error(Encoding::CompatibilityError)
+  end
+
+  it "checks that we are starting to match at the head of a character" do
+    "\xC3\xA9".send(@method).should_not.end_with?("\xA9")
+    "\xe3\x81\x82".send(@method).should_not.end_with?("\x82")
+    "\xd8\x00\xdc\x00".dup.force_encoding("UTF-16BE").send(@method).should_not.end_with?(
+        "\xdc\x00".dup.force_encoding("UTF-16BE"))
+  end
+end