1 files changed, 45 insertions, 0 deletions
diff --git a/spec/rubyspec/shared/rational/ceil.rb b/spec/rubyspec/shared/rational/ceil.rb
new file mode 100644
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+++ b/spec/rubyspec/shared/rational/ceil.rb
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+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe :rational_ceil, shared: true do
+  before do
+    @rational = Rational(2200, 7)
+  end
+
+  describe "with no arguments (precision = 0)" do
+    it "returns an Integer" do
+      @rational.ceil.should be_kind_of(Integer)
+    end
+
+    it "returns the truncated value toward positive infinity" do
+      @rational.ceil.should == 315
+      Rational(1, 2).ceil.should == 1
+      Rational(-1, 2).ceil.should == 0
+    end
+  end
+
+  describe "with a precision < 0" do
+    it "returns an Integer" do
+      @rational.ceil(-2).should be_kind_of(Integer)
+      @rational.ceil(-1).should be_kind_of(Integer)
+    end
+
+    it "moves the truncation point n decimal places left" do
+      @rational.ceil(-3).should == 1000
+      @rational.ceil(-2).should == 400
+      @rational.ceil(-1).should == 320
+    end
+  end
+
+  describe "with precision > 0" do
+    it "returns a Rational" do
+      @rational.ceil(1).should be_kind_of(Rational)
+      @rational.ceil(2).should be_kind_of(Rational)
+    end
+
+    it "moves the truncation point n decimal places right" do
+      @rational.ceil(1).should == Rational(3143, 10)
+      @rational.ceil(2).should == Rational(31429, 100)
+      @rational.ceil(3).should == Rational(157143, 500)
+    end
+  end
+end