### Question:
Runner { public Collection<BreakingChange> run(Options options) { optionsValidator.validate(options); artifactDownloaderHandler.handle(options); String oldApiPath = options.getOldApiPath(); if (StringUtils.isBlank(oldApiPath)) { throw new IllegalArgumentException("oldApiPath must be provided"); } String newApiPath = options.getNewApiPath(); if (StringUtils.isBlank(newApiPath)) { throw new IllegalArgumentException("newApiPath must be provided"); } log.info("Loading old API from {}", oldApiPath); log.info("Loading new API from {}", newApiPath); OpenAPI oldApi = openApiFactory.fromFile(oldApiPath); OpenAPI newApi = openApiFactory.fromFile(newApiPath); log.info("Successfully loaded APIs"); CheckerOptions checkerOptions = checkerOptionsFactory.create(options); Collection<BreakingChange> breakingChanges = checker.check(oldApi, newApi, checkerOptions); reporterFactory.create(options).report(breakingChanges, options); return breakingChanges; }  Collection<BreakingChange> run(Options options);  }### Answer:
@Test(expected = IllegalArgumentException.class) public void testRunShouldThrowExceptionWhenOldApiPathIsNotPresent() { Options options = new Options(); options.setNewApiPath("newApi"); underTest.run(options); }
@Test(expected = IllegalArgumentException.class) public void testRunShouldThrowExceptionWhenNewApiPathIsNotPresent() { Options options = new Options(); options.setOldApiPath("oldApi"); underTest.run(options); }