1 files changed, 26 insertions, 0 deletions
diff --git a/spec/ruby/core/array/count_spec.rb b/spec/ruby/core/array/count_spec.rb
new file mode 100644
index 0000000000..e778233c16
--- /dev/null
+++ b/spec/ruby/core/array/count_spec.rb
@@ -0,0 +1,26 @@
+require_relative '../../spec_helper'
+require_relative 'shared/iterable_and_tolerating_size_increasing'
+
+describe "Array#count" do
+  it "returns the number of elements" do
+    [:a, :b, :c].count.should == 3
+  end
+
+  it "returns the number of elements that equal the argument" do
+    [:a, :b, :b, :c].count(:b).should == 2
+  end
+
+  it "returns the number of element for which the block evaluates to true" do
+    [:a, :b, :c].count { |s| s != :b }.should == 2
+  end
+
+  it "ignores the block if there is an argument" do
+    -> {
+      [:a, :b, :b, :c].count(:b) { |e| e.size > 10 }.should == 2
+    }.should complain(/given block not used/)
+  end
+
+  context "when a block argument given" do
+    it_behaves_like :array_iterable_and_tolerating_size_increasing, :count
+  end
+end