1 files changed, 66 insertions, 0 deletions
diff --git a/spec/ruby/core/array/delete_if_spec.rb b/spec/ruby/core/array/delete_if_spec.rb
new file mode 100644
index 0000000000..4276a1fb65
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+++ b/spec/ruby/core/array/delete_if_spec.rb
@@ -0,0 +1,66 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+require File.expand_path('../shared/enumeratorize', __FILE__)
+require File.expand_path('../shared/delete_if', __FILE__)
+require File.expand_path('../../enumerable/shared/enumeratorized', __FILE__)
+
+describe "Array#delete_if" do
+  before do
+    @a = [ "a", "b", "c" ]
+  end
+
+  it "removes each element for which block returns true" do
+    @a = [ "a", "b", "c" ]
+    @a.delete_if { |x| x >= "b" }
+    @a.should == ["a"]
+  end
+
+  it "returns self" do
+    @a.delete_if{ true }.equal?(@a).should be_true
+  end
+
+  it_behaves_like :enumeratorize, :delete_if
+
+  it "returns self when called on an Array emptied with #shift" do
+    array = [1]
+    array.shift
+    array.delete_if { |x| true }.should equal(array)
+  end
+
+  it "returns an Enumerator if no block given, and the enumerator can modify the original array" do
+    enum = @a.delete_if
+    enum.should be_an_instance_of(Enumerator)
+    @a.should_not be_empty
+    enum.each { true }
+    @a.should be_empty
+  end
+
+  it "returns an Enumerator if no block given, and the array is frozen" do
+    @a.freeze.delete_if.should be_an_instance_of(Enumerator)
+  end
+
+  it "raises a RuntimeError on a frozen array" do
+    lambda { ArraySpecs.frozen_array.delete_if {} }.should raise_error(RuntimeError)
+  end
+
+  it "raises a RuntimeError on an empty frozen array" do
+    lambda { ArraySpecs.empty_frozen_array.delete_if {} }.should raise_error(RuntimeError)
+  end
+
+  it "keeps tainted status" do
+    @a.taint
+    @a.tainted?.should be_true
+    @a.delete_if{ true }
+    @a.tainted?.should be_true
+  end
+
+  it "keeps untrusted status" do
+    @a.untrust
+    @a.untrusted?.should be_true
+    @a.delete_if{ true }
+    @a.untrusted?.should be_true
+  end
+
+  it_behaves_like :enumeratorized_with_origin_size, :delete_if, [1,2,3]
+  it_behaves_like :delete_if, :delete_if
+end