Junit TemporaryFolder：临时文件夹

By | 5月 11, 2017
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写单元测试时，使用TemporaryFolder管理临时文件夹，它位于系统的临时文件目录里，Unit test执行完毕，Junit自动将其清除。

使用注解@Rule标注，告知Junit框架来管理。

@Rule
public TemporaryFolder root = new TemporaryFolder();

@Test
public void testFolder() throws IOException {
  // New folder with random name.
  File randomFolder = root.newFolder();
  // New folder with given name.
  File imageFolder = root.newFolder("image");
  // New folder recursively. Create a path under temporary folder: session/cache/icon.
  File iconFolder = root.newFolder("session", "cache", "icon");

  // New file with random name.
  File randomFile = root.newFile();
  // New file with given name.
  File noteFile = root.newFile("note");
}