1 files changed, 117 insertions, 0 deletions
diff --git a/spec/ruby/core/array/reject_spec.rb b/spec/ruby/core/array/reject_spec.rb
new file mode 100644
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+++ b/spec/ruby/core/array/reject_spec.rb
@@ -0,0 +1,117 @@
+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#reject" do
+  it "returns a new array without elements for which block is true" do
+    ary = [1, 2, 3, 4, 5]
+    ary.reject { true }.should == []
+    ary.reject { false }.should == ary
+    ary.reject { false }.object_id.should_not == ary.object_id
+    ary.reject { nil }.should == ary
+    ary.reject { nil }.object_id.should_not == ary.object_id
+    ary.reject { 5 }.should == []
+    ary.reject { |i| i < 3 }.should == [3, 4, 5]
+    ary.reject { |i| i % 2 == 0 }.should == [1, 3, 5]
+  end
+
+  it "returns self when called on an Array emptied with #shift" do
+    array = [1]
+    array.shift
+    array.reject { |x| true }.should == []
+  end
+
+  it "properly handles recursive arrays" do
+    empty = ArraySpecs.empty_recursive_array
+    empty.reject { false }.should == [empty]
+    empty.reject { true }.should == []
+
+    array = ArraySpecs.recursive_array
+    array.reject { false }.should == [1, 'two', 3.0, array, array, array, array, array]
+    array.reject { true }.should == []
+  end
+
+  it "does not return subclass instance on Array subclasses" do
+    ArraySpecs::MyArray[1, 2, 3].reject { |x| x % 2 == 0 }.should be_an_instance_of(Array)
+  end
+
+  it "does not retain instance variables" do
+    array = []
+    array.instance_variable_set("@variable", "value")
+    array.reject { false }.instance_variable_get("@variable").should == nil
+  end
+
+  it_behaves_like :enumeratorize, :reject
+  it_behaves_like :enumeratorized_with_origin_size, :reject, [1,2,3]
+end
+
+describe "Array#reject!" do
+  it "removes elements for which block is true" do
+    a = [3, 4, 5, 6, 7, 8, 9, 10, 11]
+    a.reject! { |i| i % 2 == 0 }.should equal(a)
+    a.should == [3, 5, 7, 9, 11]
+    a.reject! { |i| i > 8 }
+    a.should == [3, 5, 7]
+    a.reject! { |i| i < 4 }
+    a.should == [5, 7]
+    a.reject! { |i| i == 5 }
+    a.should == [7]
+    a.reject! { true }
+    a.should == []
+    a.reject! { true }
+    a.should == []
+  end
+
+  it "properly handles recursive arrays" do
+    empty = ArraySpecs.empty_recursive_array
+    empty_dup = empty.dup
+    empty.reject! { false }.should == nil
+    empty.should == empty_dup
+
+    empty = ArraySpecs.empty_recursive_array
+    empty.reject! { true }.should == []
+    empty.should == []
+
+    array = ArraySpecs.recursive_array
+    array_dup = array.dup
+    array.reject! { false }.should == nil
+    array.should == array_dup
+
+    array = ArraySpecs.recursive_array
+    array.reject! { true }.should == []
+    array.should == []
+  end
+
+  it "returns nil when called on an Array emptied with #shift" do
+    array = [1]
+    array.shift
+    array.reject! { |x| true }.should == nil
+  end
+
+  it "returns nil if no changes are made" do
+    a = [1, 2, 3]
+
+    a.reject! { |i| i < 0 }.should == nil
+
+    a.reject! { true }
+    a.reject! { true }.should == nil
+  end
+
+  it "returns an Enumerator if no block given, and the array is frozen" do
+    ArraySpecs.frozen_array.reject!.should be_an_instance_of(Enumerator)
+  end
+
+  it "raises a RuntimeError on a frozen array" do
+    lambda { ArraySpecs.frozen_array.reject! {} }.should raise_error(RuntimeError)
+  end
+
+  it "raises a RuntimeError on an empty frozen array" do
+    lambda { ArraySpecs.empty_frozen_array.reject! {} }.should raise_error(RuntimeError)
+  end
+
+  it_behaves_like :enumeratorize, :reject!
+  it_behaves_like :enumeratorized_with_origin_size, :reject!, [1,2,3]
+  it_behaves_like :delete_if, :reject!
+end