### Question:
RateLimiterCounterCassandraProviderImpl implements
		RateLimiterCounterProvider { public boolean cointainKeyInActiveRL(final String key) { return activeRLDao.containsKey(key); } RateLimiterCounterCassandraProviderImpl(); Set<String> getActiveRLKeys(); void addActiveRL(final String key,
			final RateLimiterPolicyModel RateLimiterPolicyModel); boolean cointainKeyInActiveRL(final String key); void addActiveEffect(final String key,
			final RateLimiterPolicyModel RateLimiterPolicyModel); void removeActiveEffect(final String key); void incrementRLCounter(final String key); void setRLCounter(final String key, int i); void setRLTimestamp(final String key, final Date date); void setRLActive(final String key, boolean b); void setRLEffectDuration(final String key, final Long duration); void setRLRolloverPeriod(final String key, final Long rollover); void setRLEffect(final String key, final RateLimiterStatus effect); RateLimiterPolicyModel getActiveRL(final String key); void resetEffects();  }### Answer:
@Test public void testCointainKeyInActiveRL() { providerImpl.addActiveRL(rl_key, rateLimiterPolicyModel_1); assertTrue(rl_key + " key must exist in activeRLCF ", providerImpl.cointainKeyInActiveRL(rl_key) ); }