sin,cos,tan tests

Author: rajithv

spec/functions_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+
+describe SymEngine do
+  before :each do
+  end
+
+  describe 'Function' do
+    before :each do
+      @pi = SymEngine::PI
+      @e = SymEngine::E
+      @one = SymEngine::Integer.new(1)
+      @zero = SymEngine::Integer.new(0)
+      @two = SymEngine::Integer.new(2)
+      @minone = SymEngine::Integer.new(-1)
+      @x = SymEngine::Symbol.new("x");
+    end
+
+    describe '#sin' do
+      context 'calculation of sin pi' do
+        it 'returns zero' do
+          f = SymEngine::sin(@pi)
+          expect(f).to eql(0)
+
+        end
+      end
+    end
+
+  end
+end