transactions_spec.rb in fakeredis-0.5.0

- old
+ new
@@ -1,19 +1,84 @@
 require 'spec_helper'
 
 module FakeRedis
   describe "TransactionsMethods" do
-    before(:each) do
+    before(:all) do
       @client = Redis.new
     end
 
-    it "should mark the start of a transaction block" do
-      transaction = @client.multi do
-        @client.set("key1", "1")
-        @client.set("key2", "2")
-        @client.mget("key1", "key2")
+    before(:each) do
+      @client.discard rescue nil
+    end
+
+    context '#multi' do
+      it "should respond with 'OK'" do
+        @client.multi.should == 'OK'
       end
 
-      transaction.should be == ["OK", "OK", ["1", "2"]]
+      it "should forbid nesting" do
+        @client.multi
+        lambda{@client.multi}.should raise_error(Redis::CommandError)
+      end
+
+      it "should mark the start of a transaction block" do
+        transaction = @client.multi do |multi|
+          multi.set("key1", "1")
+          multi.set("key2", "2")
+          multi.expire("key1", 123)
+          multi.mget("key1", "key2")
+        end
+
+        transaction.should be == ["OK", "OK", true, ["1", "2"]]
+      end
+    end
+
+    context '#discard' do
+      it "should responde with 'OK' after #multi" do
+        @client.multi
+        @client.discard.should == 'OK'
+      end
+
+      it "can't be run outside of #multi/#exec" do
+        lambda{@client.discard}.should raise_error(Redis::CommandError)
+      end
+    end
+
+    context '#exec' do
+      it "can't be run outside of #multi" do
+        lambda{@client.exec}.should raise_error(Redis::CommandError)
+      end
+    end
+
+    context 'saving up commands for later' do
+      before(:each) do
+        @client.multi
+        @string = 'fake-redis-test:string'
+        @list = 'fake-redis-test:list'
+      end
+
+      it "makes commands respond with 'QUEUED'" do
+        @client.set(@string, 'string').should == 'QUEUED'
+        @client.lpush(@list, 'list').should == 'QUEUED'
+      end
+
+      it "gives you the commands' responses when you call #exec" do
+        @client.set(@string, 'string')
+        @client.lpush(@list, 'list')
+        @client.lpush(@list, 'list')
+
+        @client.exec.should == ['OK', 1, 2]
+      end
+
+      it "does not raise exceptions, but rather puts them in #exec's response" do
+        @client.set(@string, 'string')
+        @client.lpush(@string, 'oops!')
+        @client.lpush(@list, 'list')
+
+        responses = @client.exec
+        responses[0].should == 'OK'
+        responses[1].should be_a(RuntimeError)
+        responses[2].should == 1
+      end
     end
   end
 end