Merge pull request #19 from jdenen/master

support compounding expectations

lib/rspec/collection_matchers/have.rb

@@ -1,6 +1,8 @@
 module RSpec
   module CollectionMatchers
     class Have
+      include RSpec::Matchers::Composable unless RSpec::Core::Version::STRING < '3.0'
+
       QUERY_METHODS = [:size, :length, :count].freeze
       IGNORED_CLASSES = [Integer].freeze
 

spec/rspec/collection_matchers/have_spec.rb

@@ -384,6 +384,52 @@ def items
     end
   end
 
+  describe "expectations compounded with RSpec::Matchers::Composable", :if => defined?(RSpec::Matchers::Composable) do
+    context "using #and" do
+      it "fails with relevant error when only first expectation fails" do
+        expect {
+          expect([1, 2, 3]).to be_falsey.and have(3).items
+        }.to fail_matching "expected: falsey value"
+      end
+
+      it "fails with relevant error when only second expectation fails" do
+        expect {
+          expect([1, 2, 3]).to have(3).items.and be_falsey
+        }.to fail_matching "expected: falsey value"
+      end
+
+      it "fails with relevant error when both expectations fail" do
+        expect {
+          expect([1, 2, 3]).to be_falsey.and have(0).items
+        }.to fail_matching "...and:"
+      end
+
+      it "passes when both expectations are met" do
+        expect([1, 2, 3]).to have(3).items.and be_truthy
+      end
+    end
+
+    context "using #or" do
+      it "fails with relevant error when neither expectation is met" do
+        expect {
+          expect([1, 2, 3]).to be_falsey.or have(0).items
+        }.to fail_matching "...or:"
+      end
+
+      it "passes when only first expectation is met" do
+        expect([1, 2, 3]).to have(3).items.or be_falsey
+      end
+
+      it "passes when only second expectation is met" do
+        expect([1, 2, 3]).to be_falsey.or have(3).items
+      end
+
+      it "passes when both expectations are met" do
+        expect([1, 2, 3]).to be_truthy.or have(3).items
+      end
+    end
+  end
+
   describe RSpec::CollectionMatchers::Have, "for a collection owner that implements #send" do
     before(:each) do
       @collection = Object.new