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Test: check sorted set elements order after union.
This is not a regression but issue #1786 showed the need for this test.
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@ -588,6 +588,28 @@ start_server {tags {"zset"}} {
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r zrange to_here 0 -1
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} {100}
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test {ZUNIONSTORE result is sorted} {
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# Create two sets with common and not common elements, perform
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# the UNION, check that elements are still sorted.
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r del one two dest
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set cmd1 [list r zadd one]
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set cmd2 [list r zadd two]
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for {set j 0} {$j < 1000} {incr j} {
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lappend cmd1 [expr rand()] [randomInt 1000]
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lappend cmd2 [expr rand()] [randomInt 1000]
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}
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{*}$cmd1
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{*}$cmd2
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assert {[r zcard one] > 100}
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assert {[r zcard two] > 100}
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r zunionstore dest 2 one two
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set oldscore 0
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foreach {ele score} [r zrange dest 0 -1 withscores] {
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assert {$score >= $oldscore}
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set oldscore $score
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}
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}
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proc stressers {encoding} {
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if {$encoding == "ziplist"} {
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# Little extra to allow proper fuzzing in the sorting stresser
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