fix tests

Author: osulzhenko

src/test/groovy/org/prebid/server/functional/tests/module/optabletargeting/CacheStorageSpec.groovy

@@ -1,5 +1,6 @@
 package org.prebid.server.functional.tests.module.optabletargeting
 
+import org.apache.commons.codec.binary.Base64
 import org.prebid.server.functional.model.config.AccountConfig
 import org.prebid.server.functional.model.config.AccountHooksConfiguration
 import org.prebid.server.functional.model.config.IdentifierType
@@ -132,7 +133,7 @@ class CacheStorageSpec extends ModuleBaseSpec {
 
         then: "PBS should update metrics for new saved text storage cache"
         def metrics = prebidServerStoredCacheService.sendCollectedMetricsRequest()
-        assert metrics[METRIC_CREATIVE_SIZE_TEXT] == encodeBase64(encode(targetingResult).bytes).size()
+        assert metrics[METRIC_CREATIVE_SIZE_TEXT] == new String(encodeBase64(encode(targetingResult).bytes)).size()
         assert metrics[METRIC_CREATIVE_TTL_TEXT] == targetingConfig.cache.ttlSeconds
         assert metrics[METRIC_CREATIVE_WRITE_OK] == 1
     }
@@ -186,6 +187,7 @@ class CacheStorageSpec extends ModuleBaseSpec {
             it.device = new Device(geo: Geo.FPDGeo,
                     ip: PBSUtils.getRandomEnum(PublicCountryIp.class).v4,
                     ifa: ifa,
+                    ua: PBSUtils.randomString,
                     os: os)
         }
     }