content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.beam.runners.dataflow.worker;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.contains;
  import static org.hamcrest.Matchers.hasItems;
  
  import org.hamcrest.Matchers;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Unit tests for {@link Filepatterns}. */
  @RunWith(JUnit4.class)
  public class FilepatternsTest {
    @Rule public ExpectedException exception = ExpectedException.none();
  
    @Test
    public void testExpandAtNFilepatternNoPattern() throws Exception {
      assertThat(
          Filepatterns.expandAtNFilepattern("gs://bucket/object@google.ism"),
          contains("gs://bucket/object@google.ism"));
    }
  
    @Test
    public void testExpandAtNFilepatternTwoPatterns() throws Exception {
      exception.expect(IllegalArgumentException.class);
      exception.expectMessage(
          "More than one @N wildcard found in filepattern: gs://bucket/object@10.@20.ism");
      Filepatterns.expandAtNFilepattern("gs://bucket/object@10.@20.ism");
    }
  
    @Test
    public void testExpandAtNFilepatternHugeN() throws Exception {
      exception.expect(IllegalArgumentException.class);
      exception.expectMessage(
          "Unsupported number of shards: 2000000000 "
              + "in filepattern: gs://bucket/object@2000000000.ism");
      Filepatterns.expandAtNFilepattern("gs://bucket/object@2000000000.ism");
    }
  
    @Test
    public void testExpandAtNFilepatternSmall() throws Exception {
      assertThat(
          Filepatterns.expandAtNFilepattern("gs://bucket/file@2.ism"),
          contains("gs://bucket/file-00000-of-00002.ism", "gs://bucket/file-00001-of-00002.ism"));
    }
  
    @Test
    public void testExpandAtNFilepatternLarge() throws Exception {
      Iterable<String> iterable = Filepatterns.expandAtNFilepattern("gs://bucket/file@200000.ism");
      assertThat(iterable, Matchers.<String>iterableWithSize(200000));
      assertThat(
          iterable,
          hasItems("gs://bucket/file-003232-of-200000.ism", "gs://bucket/file-199999-of-200000.ism"));
    }
  }
  