Several simplifications

Author: zverok

spec/basic_spec.rb

@@ -58,8 +58,8 @@
 
     context 'equality and inequality' do
       subject { x * y }
-      it { is_expected.to eq SymEngine::Symbol.new('x')*SymEngine::Symbol.new('y') }
-      it { is_expected.not_to eq SymEngine::Symbol.new('x')*SymEngine::Symbol.new('z') }
+      it { is_expected.to eq sym('x')*sym('y') }
+      it { is_expected.not_to eq sym('x')*sym('z') }
     end
 
     it 'simplifies' do

spec/constant_spec.rb

@@ -1,47 +1,45 @@
 describe SymEngine, 'constants' do
-  describe 'Constant' do
-    describe 'PI' do
-      subject(:pi) { SymEngine::PI }
+  describe 'PI' do
+    subject(:pi) { SymEngine::PI }
 
-      it { is_expected.to be_a SymEngine::Constant }
-      its(:to_s) { is_expected.to eq 'pi' }
+    it { is_expected.to be_a SymEngine::Constant }
+    its(:to_s) { is_expected.to eq 'pi' }
 
-      context 'sum with integer' do
-        subject { int(1) + pi }
+    context 'sum with integer' do
+      subject { int(1) + pi }
 
-        its(:to_s) { is_expected.to eq '1 + pi' }
-      end
+      its(:to_s) { is_expected.to eq '1 + pi' }
+    end
 
-      context 'with plus one and minus one' do
-        subject { 1 + pi - 1 }
+    context 'with plus one and minus one' do
+      subject { 1 + pi - 1 }
 
-      it { is_expected.to be_a SymEngine::Constant }
-      end
+    it { is_expected.to be_a SymEngine::Constant }
     end
+  end
 
-    describe 'EULER_GAMMA' do
-      subject(:euler_gamma) { SymEngine::EULER_GAMMA }
+  describe 'EULER_GAMMA' do
+    subject(:euler_gamma) { SymEngine::EULER_GAMMA }
 
-      it { is_expected.to be_a SymEngine::Constant }
+    it { is_expected.to be_a SymEngine::Constant }
 
-      context 'with powered to zero' do
-        subject { euler_gamma ** int(0) }
+    context 'with powered to zero' do
+      subject { euler_gamma ** int(0) }
 
-        it { is_expected.to be_a SymEngine::Integer }
-        its(:to_s) { is_expected.to eq('1') }
-      end
+      it { is_expected.to be_a SymEngine::Integer }
+      its(:to_s) { is_expected.to eq('1') }
     end
+  end
 
-    describe '#E' do
-      subject(:e) { SymEngine::E }
+  describe '#E' do
+    subject(:e) { SymEngine::E }
 
-      it { is_expected.to be_a SymEngine::Constant }
+    it { is_expected.to be_a SymEngine::Constant }
 
-      context 'with summation with x' do
-        subject { e + sym('x') }
-        it { is_expected.to be_a SymEngine::Basic }
-        its(:to_s) { is_expected.to eq 'x + E' }
-      end
+    context 'with summation with x' do
+      subject { e + sym('x') }
+      it { is_expected.to be_a SymEngine::Basic }
+      its(:to_s) { is_expected.to eq 'x + E' }
     end
   end
 end

spec/rational_spec.rb

@@ -1,5 +1,5 @@
 describe SymEngine::Rational do
-  context 'Rational() method' do
+  context '#initialize' do
     subject { SymEngine::Rational.new(Rational('2/3')) }
 
     it { is_expected.to be_a SymEngine::Rational }