Spec for RealMPFR

Author: rajithv

spec/real_mpfr_spec.rb

@@ -0,0 +1,71 @@
+require 'bigdecimal'
+
+describe SymEngine::RealMPFR do
+  describe 'Convert BigDemcimal to RealMPFR' do
+    shared_examples 'simple real check' do
+      subject { SymEngine(value) }
+
+      it { is_expected.to be_a SymEngine::RealMPFR }
+      its(:to_f) { is_expected.to eq value.to_f }
+    end
+
+    context 'positive BigDecimal' do
+      let(:value) { BigDecimal("12.3") }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'negative BigDecimal' do
+      let(:value) { BigDecimal("-12.3") }
+
+      it_behaves_like 'simple real check'
+    end
+  end
+
+  describe 'Initialize RealMPFR' do
+    shared_examples 'simple real check' do
+      subject { SymEngine::RealMPFR.new(value, 200) }
+
+      it { is_expected.to be_a SymEngine::RealMPFR }
+      its(:to_f) { is_expected.to eq value.to_f }
+    end
+
+    context 'positive BigDecimal' do
+      let(:value) { BigDecimal("12.3") }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'negative BigDecimal' do
+      let(:value) { BigDecimal("-12.3") }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'positive Float' do
+      let(:value) { 12.3 }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'negative Float' do
+      let(:value) { 12.3 }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'String representation of positive value' do
+      let(:value) { "12.3" }
+
+      it_behaves_like 'simple real check'
+    end
+
+    context 'String representation of negative value' do
+      let(:value) { "-12.3" }
+
+      it_behaves_like 'simple real check'
+    end
+  end
+
+
+end