few components with rspec3 syntax

spec/components/distributed_cache_spec.rb

@@ -20,18 +20,18 @@ describe DistributedCache do
     end
 
     Thread.pass
-    cache1["hi"].should == nil
+    expect(cache1["hi"]).to eq(nil)
 
   end
 
   it 'allows coerces symbol keys to strings' do
     cache1[:key] = "test"
-    cache1["key"].should == "test"
+    expect(cache1["key"]).to eq("test")
 
     wait_for do
       cache2[:key] == "test"
     end
-    cache2["key"].should == "test"
+    expect(cache2["key"]).to eq("test")
   end
 
   it 'sets other caches' do
@@ -49,7 +49,7 @@ describe DistributedCache do
     end
 
     cache1.delete("foo")
-    cache1["foo"].should == nil
+    expect(cache1["foo"]).to eq(nil)
 
     wait_for do
       cache2["foo"] == nil
@@ -64,7 +64,7 @@ describe DistributedCache do
     end
 
     cache1.clear
-    cache1["foo"].should == nil
+    expect(cache1["foo"]).to eq(nil)
     wait_for do
       cache2["boom"] == nil
     end