1require 'spec_helper'
  2
  3module Nasty
  4  describe BlockSpecification do
  5    let(:sut) { BlockSpecification.new { |item| item == true } }
  6
  7    context "when an item matches" do
  8      it "should return true" do
  9        sut.matches?(true).should be_true
 10      end
 11    end
 12
 13    context "when an item does not match" do
 14      it "should return true" do
 15        sut.matches?(false).should be_false
 16      end
 17    end
 18
 19    describe "or" do
 20      context "when one item matches" do
 21        it "should return true" do
 22          sut.or(BlockSpecification.new {|x| x == false} ).matches?(false).should be_true
 23        end
 24        it "should return true" do
 25          sut.or {|x| x == false} .matches?(false).should be_true
 26        end
 27      end
 28
 29      context "when the other item matches" do
 30        it "should return true" do
 31          sut.or(BlockSpecification.new {|x| x == false} ).matches?(true).should be_true
 32        end
 33        it "should return true" do
 34          sut.or {|x| x == false} .matches?(true).should be_true
 35        end
 36      end
 37
 38      context "when neither item matches" do
 39        it "should return false" do
 40          sut.or(BlockSpecification.new {|x| x == true}).matches?(false).should be_false
 41        end
 42        it "should return false" do
 43          sut.or {|x| x == true}.matches?(false).should be_false
 44        end
 45      end
 46    end
 47
 48    describe "and" do
 49      context "when one item matches" do
 50        it "should return false" do
 51          sut.and(BlockSpecification.new {|x| x == false} ).matches?(false).should be_false
 52        end
 53        it "should return false" do
 54          sut.and {|x| x == false} .matches?(false).should be_false
 55        end
 56      end
 57
 58      context "when the other item matches" do
 59        it "should return false" do
 60          sut.and(BlockSpecification.new {|x| x == false} ).matches?(true).should be_false
 61        end
 62        it "should return false" do
 63          sut.and {|x| x == false} .matches?(true).should be_false
 64        end
 65      end
 66
 67      context "when neither item matches" do
 68        it "should return false" do
 69          sut.and(BlockSpecification.new {|x| x == true}).matches?(false).should be_false
 70        end
 71        it "should return false" do
 72          sut.and {|x| x == true}.matches?(false).should be_false
 73        end
 74      end
 75
 76      context "when both items match" do
 77        it "should return true" do
 78          sut.and(BlockSpecification.new {|x| x == true}).matches?(true).should be_true
 79        end
 80        it "should return true" do
 81          sut.and {|x| x == true}.matches?(true).should be_true
 82        end
 83      end
 84    end
 85
 86    describe "not" do
 87      context "when an item matches" do
 88        it "should return false" do
 89          sut.not.matches?(true).should be_false
 90        end
 91      end
 92
 93      context "when an item does not match" do
 94        it "should return true" do
 95          sut.not.matches?(false).should be_true
 96        end
 97      end
 98    end
 99  end
100end