@@ -1,38 +1,36 @@
require 'stack'
describe Stack do
- it "should be empty when first created" do
- Stack.new.should be_empty
+ before { @stack = Stack.new }
+
+ describe "before pushing" do
+ subject { @stack }
+ it { should be_empty }
+ it "should return nil when popping" do
+ subject.pop.should be_nil
+ end
end
- it "should not be empty when something is pushed onto it" do
- stack = Stack.new
- stack.push(1)
- stack.should_not be_empty
+ describe "after one push" do
+ before { @stack.push("Hello, world") }
+ subject { @stack }
+ it { should_not be_empty }
+ it { should have(1).items }
+ it "should return item when popped" do
+ subject.pop.should == "Hello, world"
+ end
end
-
- it "size should be incremented by 1 when something is pushed onto it" do
+
+ it "should increment size by 1 when pushing" do
stack = Stack.new
lambda{
stack.push("Hello World!")
}.should change(stack, :size).by(1)
end
- it "result should be saved in var when something is pop'ed from it" do
- stack = Stack.new
- stack.push("mooh")
- stack.pop.should == "mooh"
- end
-
- it "pop from empty stack should give nil" do
- stack = Stack.new
- stack.pop.should == nil
- end
-
- it "size should be decremented by 1 when something is pop'ed from it" do
- stack = Stack.new
- stack.push("Office")
+ it "should decrement size by 1 when popping" do
+ @stack.push("Office")
lambda{
- stack.pop
- }.should change(stack, :size).by(-1)
+ @stack.pop
+ }.should change(@stack, :size).by(-1)
end
end
\ No newline at end of file
spec/stack_spec.rb
1a428c40d9e50462a9221bdcd573a6f8612e5464
Jacob Atzen
jacob@jacobatzen.dk
http://github.com/jacobat/stackit/commit/fd8ed3a39333fea5e50dac82b27ca19918160712
fd8ed3a39333fea5e50dac82b27ca19918160712
2009-10-14T14:26:38-07:00
2009-10-14T14:26:38-07:00
New spec style
c0a52f92eedbf3ba1cf76d737537565528a6d868
Jacob Atzen
jacob@jacobatzen.dk