Disable identity map by default

The identity map was causing more issues than expected:
* #260
* #285
* #302

README.md

@@ -273,7 +273,7 @@ Here are some fun facts about the 3.0 release:
 
 * The entire library is implemented in just 2,000 lines of code
 * With over 5,000 lines of specs, the spec-to-code ratio is over 2.5:1
-* The spec suite contains 674 examples and runs in under 2 seconds on a MacBook
+* The spec suite contains 668 examples and runs in under 2 seconds on a MacBook
 * This project has 100% C0 code coverage (the tests execute every line of
   source code at least once)
 * At the time of release, this library is comprehensive: you can request all

lib/twitter/default.rb

@@ -22,7 +22,7 @@ module Default
       :ssl => {:verify => false},
       :timeout => 10,
     } unless defined? CONNECTION_OPTIONS
-    IDENTITY_MAP = Twitter::IdentityMap unless defined? IDENTITY_MAP
+    IDENTITY_MAP = false unless defined? IDENTITY_MAP
     MIDDLEWARE = Faraday::Builder.new(
       &Proc.new do |builder|
         # Convert file uploads to Faraday::UploadIO objects

spec/twitter/base_spec.rb

@@ -4,10 +4,15 @@
 
   context 'identity map enabled' do
     before do
+      Twitter.identity_map = Twitter::IdentityMap
       object = Twitter::Base.new(:id => 1)
       @base = Twitter::Base.store(object)
     end
 
+    after do
+      Twitter.identity_map = false
+    end
+
     describe '.identity_map' do
       it 'returns an instance of the identity map' do
         Twitter::Base.identity_map.should be_a Twitter::IdentityMap
@@ -105,18 +110,4 @@
     end
   end
 
-  context 'custom identity map enabled' do
-    after(:all) do
-      Twitter.identity_map = Twitter::IdentityMap
-    end
-
-    describe '.identity_map' do
-      it 'returns an instance of the custom identity map' do
-        Twitter::Base.identity_map.should be_a Twitter::IdentityMap
-        Twitter.identity_map = Hash
-        Twitter::Base.identity_map.should_not be_a Twitter::IdentityMap
-      end
-    end
-  end
-
 end

spec/twitter/identifiable_spec.rb

@@ -10,16 +10,26 @@
     end
   end
 
-  describe '.fetch' do
-    it 'returns existing objects' do
-      Twitter::Identity.store(Twitter::Identity.new(:id => 1))
-      Twitter::Identity.fetch(:id => 1).should be
+  context 'identity map enabled' do
+    before do
+      Twitter.identity_map = Twitter::IdentityMap
     end
 
-    it "raises an error on objects that don't exist" do
-      lambda {
-        Twitter::Identity.fetch(:id => 6)
-      }.should raise_error(Twitter::Error::IdentityMapKeyError)
+    after do
+      Twitter.identity_map = false
+    end
+
+    describe '.fetch' do
+      it 'returns existing objects' do
+        Twitter::Identity.store(Twitter::Identity.new(:id => 1))
+        Twitter::Identity.fetch(:id => 1).should be
+      end
+
+      it "raises an error on objects that don't exist" do
+        lambda {
+          Twitter::Identity.fetch(:id => 6)
+        }.should raise_error(Twitter::Error::IdentityMapKeyError)
+      end
     end
   end