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PCBC-1034: Binary CasMismatch tests occasionally fail #232

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PCBC-1034: Binary CasMismatch tests occasionally fail #232

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18 changes: 14 additions & 4 deletions tests/KeyValueBinaryOperationsTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -55,10 +55,15 @@ public function testAppendCasMismatch()
$id = $this->uniqueId();

$res = $collection->upsert($id, "foo", UpsertOptions::build()->transcoder(RawBinaryTranscoder::getInstance()));
$cas = (string)((int)$res->cas() + 1);

// Replaces the last hex digit of the CAS to ensure CAS mismatch without risk of overflow
$cas = $res->cas();
$last = substr($cas, -1);
$newLast = $last === '0' ? '1' : '0';
$invalidCas = substr_replace($cas, $newLast, -1);

$this->expectException(CasMismatchException::class);
$collection->binary()->append($id, "bar", AppendOptions::build()->cas($cas));
$collection->binary()->append($id, "bar", AppendOptions::build()->cas($invalidCas));
}

public function testPrependAddsBytesToTheBeginningOfTheDocument()
Expand All @@ -85,10 +90,15 @@ public function testPrependCasMismatch()
$id = $this->uniqueId();

$res = $collection->upsert($id, "foo", UpsertOptions::build()->transcoder(RawBinaryTranscoder::getInstance()));
$cas = (string)((int)((int)$res->cas() + 1));

// Replaces the last hex digit of the CAS to ensure CAS mismatch without risk of overflow
$cas = $res->cas();
$last = substr($cas, -1);
$newLast = $last === '0' ? '1' : '0';
$invalidCas = substr_replace($cas, $newLast, -1);

$this->expectException(CasMismatchException::class);
$collection->binary()->prepend($id, "bar", PrependOptions::build()->cas($cas));
$collection->binary()->prepend($id, "bar", PrependOptions::build()->cas($invalidCas));
}

public function testAppendThrowsExceptionIfDocumentDoesNotExist()
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