1 files changed, 24 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/ceil_spec.rb b/spec/ruby/core/integer/ceil_spec.rb
new file mode 100644
index 0000000000..eb633fba78
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+++ b/spec/ruby/core/integer/ceil_spec.rb
@@ -0,0 +1,24 @@
+require_relative '../../spec_helper'
+require_relative 'shared/to_i'
+require_relative 'shared/integer_rounding'
+require_relative 'shared/integer_ceil_precision'
+
+describe "Integer#ceil" do
+  it_behaves_like :integer_to_i, :ceil
+  it_behaves_like :integer_rounding_positive_precision, :ceil
+
+  context "with precision" do
+    it_behaves_like :integer_ceil_precision, :Integer
+  end
+
+  context "precision argument specified as part of the ceil method is negative" do
+    it "returns the smallest integer greater than self with at least precision.abs trailing zeros" do
+      18.ceil(-1).should eql(20)
+      18.ceil(-2).should eql(100)
+      18.ceil(-3).should eql(1000)
+      -1832.ceil(-1).should eql(-1830)
+      -1832.ceil(-2).should eql(-1800)
+      -1832.ceil(-3).should eql(-1000)
+    end
+  end
+end