resource-locking/src/test/java/FourBitTwoTest.java at ea80d775231001c44836c5c313d4ff753123d8a2 · rooftopsparrow/resource-locking · GitHub

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/**
 * Tests for FourBitTwoDisclosureDeviceUnlocker
*/
import org.junit.Test;
import static org.junit.Assert.*;
import static org.hamcrest.CoreMatchers.containsString;

public class FourBitTwoTest {

  static final boolean USEDEVDEVICE = false;

  static Device buildDevice(boolean[] init, int bits) {
    if (USEDEVDEVICE) {
      return new DevDevice(init, bits);
    } else {
      return new Device(init, bits);
    }
  }

  static Device buildDevice() {
    if (USEDEVDEVICE) {
      return new DevDevice();
    } else {
      return new Device();
    }
  }

  @Test public void testItUnlocksTheDeviceWithAllTrue() {
    boolean[] init = {true, true, true, true};
    Device d = FourBitTwoTest.buildDevice(init, 2);
    assertTrue(FourBitTwoDisclosureDeviceUnlocker.unlock(d));
    String trace = FourBitTwoDisclosureDeviceUnlocker.showTrace();
    assertThat(trace, containsString("true"));
   // System.out.println("TRACE:\n" + trace);
  }

  @Test public void testItUnlocksTheDeviceWithAllFalse() {
    boolean[] init = {false, false, false, false};
    Device d = FourBitTwoTest.buildDevice(init, 2);
    assertTrue(FourBitTwoDisclosureDeviceUnlocker.unlock(d));
    String trace = FourBitTwoDisclosureDeviceUnlocker.showTrace();
    assertThat(trace, containsString("true"));
    //System.out.println("TRACE:\n" + trace);
  }

  @Test public void testItUnlocksTheDeviceWhenSetRandomBits() {
    Device d = FourBitTwoTest.buildDevice();
    assertTrue(FourBitTwoDisclosureDeviceUnlocker.unlock(d));
    String trace = FourBitTwoDisclosureDeviceUnlocker.showTrace();
    assertThat(trace, containsString("true"));
    System.out.println("TRACE:\n" + trace);
  }

  @Test public void testItFailsToUnlockWhenItsUnfair() {
    UnfairTestDevice d = new UnfairTestDevice();
    assertFalse(FourBitTwoDisclosureDeviceUnlocker.unlock(d));
    String trace = FourBitTwoDisclosureDeviceUnlocker.showTrace();
    assertThat(trace, containsString("false"));
    //System.out.println("TRACE:\n" + trace);
  }

  @Test public void testItFailsWithFiveTwo(){
    boolean[] init = {false, true, false, true, false};
    Device d = FourBitTwoTest.buildDevice(init, 2);
    assertFalse(FourBitTwoDisclosureDeviceUnlocker.unlock(d));
    String trace = FourBitTwoDisclosureDeviceUnlocker.showTrace();
    assertThat(trace, containsString("false"));
   // System.out.println("TRACE:\n" + trace);
  }


}