void testGetClustersUsingPagination()

in genie-client/src/integTest/java/com/netflix/genie/client/ClusterClientIntegrationTest.java [49:141]
66 lines of code
4 McCabe index (conditional complexity)

    void testGetClustersUsingPagination() throws Exception {
        final String id1 = UUID.randomUUID() + "_1";
        final String id2 = UUID.randomUUID() + "_2";
        final String id3 = UUID.randomUUID() + "_3";

        final List<String> ids = Lists.newArrayList(id1, id2, id3);

        for (final String id : ids) {
            final Cluster cluster = new Cluster.Builder(
                "ClusterName",
                "cluster-user",
                "1.0",
                ClusterStatus.UP
            )
                .withId(id)
                .build();

            this.clusterClient.createCluster(cluster);
        }

        final List<Cluster> results = this.clusterClient.getClusters(
            null,
            null,
            null,
            null,
            null,
            null,
            null,
            null,
            null
        );

        Assertions.assertThat(results).hasSize(3);
        Assertions.assertThat(
            results.stream()
                .map(Cluster::getId)
                .filter(Optional::isPresent)
                .map(Optional::get)
        ).containsExactlyInAnyOrder(id1, id2, id3);

        // Paginate, 1 result per page
        for (int i = 0; i < ids.size(); i++) {
            final List<Cluster> page = this.clusterClient.getClusters(
                null,
                null,
                null,
                null,
                null,
                1,
                SortAttribute.UPDATED,
                SortDirection.ASC,
                i
            );

            Assertions.assertThat(page.size()).isEqualTo(1);
            Assertions.assertThat(page.get(0).getId().orElse(null)).isEqualTo(ids.get(i));
        }

        // Paginate, 1 result per page, reverse order
        Collections.reverse(ids);
        for (int i = 0; i < ids.size(); i++) {
            final List<Cluster> page = this.clusterClient.getClusters(
                null,
                null,
                null,
                null,
                null,
                1,
                SortAttribute.UPDATED,
                SortDirection.DESC,
                i
            );

            Assertions.assertThat(page.size()).isEqualTo(1);
            Assertions.assertThat(page.get(0).getId().orElse(null)).isEqualTo(ids.get(i));
        }

        /* Comment out this test for now as it fails integration test and blocks an urgent fix
        // Ask for page beyond end of results
        Assertions.assertThat(
            this.clusterClient.getClusters(
                null,
                null,
                null,
                null,
                null,
                3,
                null,
                null,
                1
            )
        ).isEmpty(); */
    }