1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/float_spec.rb b/spec/ruby/optional/capi/float_spec.rb
new file mode 100644
index 0000000000..4b98902b59
--- /dev/null
+++ b/spec/ruby/optional/capi/float_spec.rb
@@ -0,0 +1,43 @@
+require_relative 'spec_helper'
+
+load_extension("float")
+
+describe "CApiFloatSpecs" do
+  before :each do
+    @f = CApiFloatSpecs.new
+  end
+
+  describe "rb_float_new" do
+    it "creates a new float" do
+      ((@f.new_zero - 0).abs < 0.000001).should == true
+      ((@f.new_point_five - 0.555).abs < 0.000001).should == true
+    end
+  end
+
+  describe "RFLOAT_VALUE" do
+    it "returns the C double value of the Float" do
+      @f.RFLOAT_VALUE(2.3).should == 2.3
+    end
+  end
+
+  describe "rb_Float" do
+    it "creates a new Float from a String" do
+      f = @f.rb_Float("101.99")
+      f.should be_kind_of(Float)
+      f.should eql(101.99)
+    end
+  end
+
+  describe "RB_FLOAT_TYPE_P" do
+    it "returns true for floats" do
+      @f.RB_FLOAT_TYPE_P(2.0).should == true
+    end
+
+    it "returns false for non-floats" do
+      @f.RB_FLOAT_TYPE_P(nil).should == false
+      @f.RB_FLOAT_TYPE_P(10).should == false
+      @f.RB_FLOAT_TYPE_P("string").should == false
+      @f.RB_FLOAT_TYPE_P(Object.new).should == false
+    end
+  end
+end