1 files changed, 26 insertions, 0 deletions
diff --git a/spec/ruby/core/array/take_while_spec.rb b/spec/ruby/core/array/take_while_spec.rb
new file mode 100644
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+++ b/spec/ruby/core/array/take_while_spec.rb
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+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/iterable_and_tolerating_size_increasing'
+
+describe "Array#take_while" do
+  it "returns all elements until the block returns false" do
+    [1, 2, 3].take_while{ |element| element < 3 }.should == [1, 2]
+  end
+
+  it "returns all elements until the block returns nil" do
+    [1, 2, nil, 4].take_while{ |element| element }.should == [1, 2]
+  end
+
+  it "returns all elements until the block returns false" do
+    [1, 2, false, 4].take_while{ |element| element }.should == [1, 2]
+  end
+
+  it 'returns a Array instance for Array subclasses' do
+    ArraySpecs::MyArray[1, 2, 3, 4, 5].take_while { |n| n < 4 }.should be_an_instance_of(Array)
+  end
+end
+
+describe "Array#take_while" do
+  @value_to_return = -> _ { true }
+  it_behaves_like :array_iterable_and_tolerating_size_increasing, :take_while
+end