### Question:
BizCommandProvider implements CommandProvider { @Override public boolean validate(String command) { return new BizCommand(command).isValidate(); }  @Override String getHelp(); @Override String handleCommand(String command); @Override boolean validate(String command);  }### Answer:
@Test public void testBizCommandPattern() { Assert.assertFalse(bizCommandProvider.validate("biz")); Assert.assertFalse(bizCommandProvider.validate("biz -m")); Assert.assertFalse(bizCommandProvider.validate("biz -d")); Assert.assertFalse(bizCommandProvider.validate("biz -s")); Assert.assertFalse(bizCommandProvider.validate("biz -i")); Assert.assertFalse(bizCommandProvider.validate("biz -u")); Assert.assertFalse(bizCommandProvider.validate("biz -o")); Assert.assertTrue(bizCommandProvider.validate("biz -a")); Assert.assertTrue(bizCommandProvider.validate("biz -h")); Assert.assertFalse(bizCommandProvider.validate("biz -ah")); Assert.assertFalse(bizCommandProvider.validate("biz -am A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -hm A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -mi A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -mu A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -mo A1:V1")); Assert.assertTrue(bizCommandProvider.validate("biz -msd A1:V1")); Assert.assertTrue(bizCommandProvider.validate("biz -msd A1:V1 A2:V2")); Assert.assertFalse(bizCommandProvider.validate("biz -io A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -i A1:V1 A2:V2")); Assert.assertTrue(bizCommandProvider.validate("biz -i A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -u A1:V1 A2:V2")); Assert.assertTrue(bizCommandProvider.validate("biz -u A1:V1")); Assert.assertFalse(bizCommandProvider.validate("biz -o A1:V1 A2:V2")); Assert.assertTrue(bizCommandProvider.validate("biz -o A1:V1")); }