1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/core/array/filter_spec.rb b/spec/ruby/core/array/filter_spec.rb
new file mode 100644
index 0000000000..d7c722e44c
--- /dev/null
+++ b/spec/ruby/core/array/filter_spec.rb
@@ -0,0 +1,14 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../shared/select', __FILE__)
+
+describe "Array#filter" do
+  it_behaves_like :array_select, :filter
+end
+
+describe "Array#filter!" do
+  it "returns nil if no changes were made in the array" do
+    [1, 2, 3].filter! { true }.should be_nil
+  end
+
+  it_behaves_like :keep_if, :filter!
+end