feat: allow evalscript on pipelines & transactions

This augments `evalscript` to allow it on `PipelineConnection` and `TransactionConnection`.

Author: tanmaykm

src/commands.jl

@@ -212,8 +212,7 @@ end
 @redisfunction "watch" Bool key keys...
 
 # Scripting commands
-# TODO: PipelineConnection and TransactionConnection
-function evalscript(conn::RedisConnection, script, numkeys::Integer, keys, args)
+function evalscript(conn::Union{RedisConnection,PipelineConnection,TransactionConnection}, script, numkeys::Integer, keys, args)
     response = execute_command(conn, flatten_command("eval", script, numkeys, keys, args))
     return response
 end

test/redis_tests.jl

@@ -378,21 +378,30 @@ function redis_tests(conn = RedisConnection())
         @test exec(trans) == ["OK", "foobar"]
         @test del(trans, testkey) == "QUEUED"
         @test exec(trans) == [true]
+        @test evalscript(trans, "return", 0, [], []) == "QUEUED"
+        @test exec(trans) == [nothing]
         disconnect(trans)
     end
 
     @testset "Pipelines" begin
         pipe = open_pipeline(conn)
         set(pipe, testkey3, "anything")
         @test length(read_pipeline(pipe)) == 1
+
         get(pipe, testkey3)
         set(pipe, testkey4, "testing")
         result = read_pipeline(pipe)
         @test length(result) == 2
         @test result == ["anything", "OK"]
+
         @test del(pipe, testkey3) == 1
         @test del(pipe, testkey4) == 2
-        @test result ==  ["anything", "OK"]
+        result = read_pipeline(pipe)
+        @test result ==  [1, 1]
+
+        evalscript(pipe, "return", 0, [], [])
+        result = read_pipeline(pipe)
+        @test result == []
         disconnect(pipe)
     end