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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_kjt9788h232pr2ao7p298fpnjb, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
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<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
svoid test_uniqCI() {
  new Concepts cc;
  Concept a = cnew(cc, Concept);
  Concept b = uniqCI(cc, Concept, myRef := a);
  assertSameVerbose(cc, a.concepts());
  assertSameVerbose(cc, b.concepts());
  assertEqualsVerbose(a, cget(b, "myRef"));
  assertEqualsVerbose(1, l(b._refs()));
  assertEqualsVerbose(1, l(a.backRefs));
  assertEquals(ll(b), findBackRefs(a));
}