Fix hmset exception and xadd spec errors

lib/mock_redis/hash_methods.rb

@@ -94,7 +94,7 @@ def hmset(key, *kvpairs)
       assert_has_args(kvpairs, 'hmset')
 
       if kvpairs.length.odd?
-        raise Redis::CommandError, err_msg || 'ERR wrong number of arguments for HMSET'
+        raise Redis::CommandError, err_msg || 'ERR wrong number of arguments for \'hmset\' command'
       end
 
       kvpairs.each_slice(2) do |(k, v)|

spec/commands/xadd_spec.rb

@@ -14,20 +14,20 @@
 
   it 'returns an id based on the timestamp' do
     t = Time.now.to_i
-    id = @redises.xadd(@key, key: 'value')
-    expect(@redises.xadd(@key, key: 'value')).to match(/#{t}\d{3}-0/)
+    id = @redises.xadd(@key, { key: 'value' })
+    expect(@redises.xadd(@key, { key: 'value' })).to match(/#{t}\d{3}-0/)
   end
 
   it 'adds data with symbols' do
-    @redises.xadd(@key, symbol_key: :symbol_value)
+    @redises.xadd(@key, { symbol_key: :symbol_value })
     expect(@redises.xrange(@key, '-', '+').last[1])
       .to eq('symbol_key' => 'symbol_value')
   end
 
   it 'increments the sequence number with the same timestamp' do
     Timecop.freeze do
-      @redises.xadd(@key, key: 'value')
-      expect(@redises.xadd(@key, key: 'value')).to match(/\d+-1/)
+      @redises.xadd(@key, { key: 'value' })
+      expect(@redises.xadd(@key, { key: 'value' })).to match(/\d+-1/)
     end
   end
 
@@ -67,7 +67,7 @@
   it 'caters for the current time being before the last time' do
     t = (Time.now.to_f * 1000).to_i + 2000
     @redises.xadd(@key, { key: 'value' }, id: "#{t}-0")
-    expect(@redises.xadd(@key, key: 'value')).to match(/#{t}-1/)
+    expect(@redises.xadd(@key, { key: 'value' })).to match(/#{t}-1/)
   end
 
   it 'appends a sequence number if it is missing' do

spec/commands/xlen_spec.rb

@@ -14,9 +14,9 @@
 
   it 'returns the number of items in the stream' do
     expect(@redises.xlen(@key)).to eq 0
-    @redises.xadd(@key, key: 'value')
+    @redises.xadd(@key, { key: 'value' })
     expect(@redises.xlen(@key)).to eq 1
-    3.times { @redises.xadd(@key, key: 'value') }
+    3.times { @redises.xadd(@key, { key: 'value' }) }
     expect(@redises.xlen(@key)).to eq 4
   end
 end