Convert SizedArray spec from bacon to rspec.

spec/sizedarray.rb

@@ -1,61 +0,0 @@
-require_relative 'preparation'
-
-describe 'A SizedArray' do
-  it 'can be instantiated with a size parameter' do
-    a = SizedArray.new( 2 )
-    a.capacity.should.equal 2
-    a = SizedArray.new( 4 )
-    a.capacity.should.equal 4
-  end
-
-  it 'can be appended to and provide overflow items' do
-    a = SizedArray.new( 2 )
-
-    a << 1
-    a.should.equal [ 1 ]
-    a << 2
-    a.should.equal [ 1, 2 ]
-    ( a << 3 ).should.equal 1
-    a.should.equal [ 2, 3 ]
-    ( a << 1 ).should.equal 2
-    a.should.equal [ 3, 1 ]
-  end
-
-  it 'can be pushed to' do
-    a = SizedArray.new( 2 )
-    b = SizedArray.new( 2 )
-
-    a.should.equal b
-
-    a << 1
-    b.push 1
-    a.should.equal b
-    a << 2
-    b.push 2
-    a.should.equal b
-    a << 3
-    b.push 3
-    a.should.equal b
-  end
-
-  it 'can be unshifted to and provide overflow items' do
-    a = SizedArray.new( 2 )
-
-    a.unshift( 1 ).should.equal [ 1 ]
-    a.unshift( 2 ).should.equal [ 2, 1 ]
-    a.unshift( 3 ).should.equal 1
-    a.should.equal [ 3, 2 ]
-    a.unshift( 1 ).should.equal 2
-    a.should.equal [ 1, 3 ]
-  end
-
-  it 'can be accept multiple items up to its size via #concat' do
-    a = SizedArray.new( 4 )
-
-    a.concat( [ 1, 2 ] ).should.equal [ 1, 2 ]
-    a.concat( [ 3, 4 ] ).should.equal [ 1, 2, 3, 4 ]
-    a.concat( [ 5, 6 ] ).should.equal [ 3, 4, 5, 6 ]
-    a.concat( [ 7, 8, 9, 10 ] ).should.equal [ 7, 8, 9, 10 ]
-    a.concat( [ 1, 2, 3, 4, 5, 6 ] ).should.equal [ 3, 4, 5, 6 ]
-  end
-end

spec/sizedarray_spec.rb

@@ -0,0 +1,61 @@
+require 'spec_helper'
+
+describe 'A SizedArray' do
+  it 'can be instantiated with a size parameter' do
+    a = SizedArray.new( 2 )
+    expect(a.capacity).to eq 2
+    a = SizedArray.new( 4 )
+    expect(a.capacity).to eq 4
+  end
+
+  it 'can be appended to and provide overflow items' do
+    a = SizedArray.new( 2 )
+
+    a << 1
+    expect(a).to eq([ 1 ])
+    a << 2
+    expect(a).to eq([ 1, 2 ])
+    expect(( a << 3 )).to eq 1
+    expect(a).to eq([ 2, 3 ])
+    expect(( a << 1 )).to eq 2
+    expect(a).to eq([ 3, 1 ])
+  end
+
+  it 'can be pushed to' do
+    a = SizedArray.new( 2 )
+    b = SizedArray.new( 2 )
+
+    expect(a).to eq b
+
+    a << 1
+    b.push 1
+    expect(a).to eq b
+    a << 2
+    b.push 2
+    expect(a).to eq b
+    a << 3
+    b.push 3
+    expect(a).to eq b
+  end
+
+  it 'can be unshifted to and provide overflow items' do
+    a = SizedArray.new( 2 )
+
+    expect(a.unshift( 1 )).to eq([ 1 ])
+    expect(a.unshift( 2 )).to eq([ 2, 1 ])
+    expect(a.unshift( 3 )).to eq 1
+    expect(a).to eq([ 3, 2 ])
+    expect(a.unshift( 1 )).to eq 2
+    expect(a).to eq([ 1, 3 ])
+  end
+
+  it 'can be accept multiple items up to its size via #concat' do
+    a = SizedArray.new( 4 )
+
+    expect(a.concat( [ 1, 2 ] )).to eq([ 1, 2 ])
+    expect(a.concat( [ 3, 4 ] )).to eq([ 1, 2, 3, 4 ])
+    expect(a.concat( [ 5, 6 ] )).to eq([ 3, 4, 5, 6 ])
+    expect(a.concat( [ 7, 8, 9, 10 ] )).to eq([ 7, 8, 9, 10 ])
+    expect(a.concat( [ 1, 2, 3, 4, 5, 6 ] )).to eq([ 3, 4, 5, 6 ])
+  end
+end