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Added recall test

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This commit is contained in:
Andrew Kane
2022-02-06 19:59:46 -08:00
parent 5aeabc3648
commit 3d2b867a58
1 changed files with 41 additions and 0 deletions
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test/t/003_recall.pl Normal file
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use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 1;
# Initialize node
my $node = get_new_node('node');
$node->init;
$node->start;
# Create table
$node->safe_psql("postgres", "CREATE EXTENSION vector;");
$node->safe_psql("postgres", "CREATE TABLE tst (i int4, v vector(3));");
$node->safe_psql("postgres",
"INSERT INTO tst SELECT i, ARRAY[random(), random(), random()] FROM generate_series(1,100000) i;"
);
# Get exact results
my $expected = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
my @expected_ids = split("\n", $expected);
# Add index
$node->safe_psql("postgres", "CREATE INDEX ON tst USING ivfflat (v);");
# Get approximate results
$node->safe_psql("postgres", "SET enable_seqscan = off;");
my $actual = $node->safe_psql("postgres", "SELECT i FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
my @actual_ids = split("\n", $actual);
my %actual_set = map { $_ => 1 } @actual_ids;
my $count = 0;
for my $el (@expected_ids) {
if (exists($actual_set{$el})) {
$count++;
}
}
# TODO Run more queries to prevent flakiness
# TODO Test ivfflat.probes
cmp_ok($count, ">=", 5);