package com.atlassian.sal.api.xsrf;
   
   import org.junit.Before;
   import org.junit.Test;
   import org.junit.runner.RunWith;
   import org.mockito.Mock;
   import org.mockito.runners.MockitoJUnitRunner;
   
   import javax.servlet.http.HttpServletRequest;
  
  import static org.junit.Assert.assertEquals;
  import static org.mockito.Mockito.when;
  
  @RunWith(MockitoJUnitRunner.class)
  public class TestXsrfHeaderValidator {
      private static final String TOKEN_VALUE = "no-check";
      private XsrfHeaderValidator xsrfHeaderValidator;
  
      private
      @Mock
      HttpServletRequest request;
  
      @Before
      public void setUp() {
          xsrfHeaderValidator = new XsrfHeaderValidator();
      }
  
      @Test
      public void testIsValidHeaderValueWithNull() {
          assertEquals(false, xsrfHeaderValidator.isValidHeaderValue(null));
      }
  
      @Test
      public void testIsValidHeaderValueWithIncorrectValue() {
          assertEquals(false, xsrfHeaderValidator.isValidHeaderValue("a"));
      }
  
      @Test
      public void testIsValidHeaderValueWithCorrectValue() {
          assertEquals(true, xsrfHeaderValidator.isValidHeaderValue(
                  TOKEN_VALUE));
      }
  
      @Test
      public void testRequestHasValidXsrfHeaderWithValidValue() {
          when(request.getHeader(XsrfHeaderValidator.TOKEN_HEADER)
          ).thenReturn(TOKEN_VALUE);
          assertEquals(true,
                  xsrfHeaderValidator.requestHasValidXsrfHeader(request));
      }
  
      @Test
      public void testRequestHasValidXsrfHeaderWithInvalidValue() {
          when(request.getHeader(XsrfHeaderValidator.TOKEN_HEADER)
          ).thenReturn("a");
          assertEquals(false,
                  xsrfHeaderValidator.requestHasValidXsrfHeader(request));
      }
  
  }