### Question:
JWTFilter extends GenericFilterBean { public JWTFilter(TokenProvider tokenProvider) { this.tokenProvider = tokenProvider; } JWTFilter(TokenProvider tokenProvider); @Override void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain); static final String AUTHORIZATION_HEADER; static final String AUTHORIZATION_TOKEN; }### Answer:
@Test public void testJWTFilter() throws Exception { UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken( "test-user", "test-password", Collections.singletonList(new SimpleGrantedAuthority(AuthoritiesConstants.USER)) ); String jwt = tokenProvider.createToken(authentication, false); MockHttpServletRequest request = new MockHttpServletRequest(); request.addHeader(JWTFilter.AUTHORIZATION_HEADER, "Bearer " + jwt); request.setRequestURI("/api/test"); MockHttpServletResponse response = new MockHttpServletResponse(); MockFilterChain filterChain = new MockFilterChain(); jwtFilter.doFilter(request, response, filterChain); assertThat(response.getStatus()).isEqualTo(HttpStatus.OK.value()); assertThat(SecurityContextHolder.getContext().getAuthentication().getName()).isEqualTo("test-user"); assertThat(SecurityContextHolder.getContext().getAuthentication().getCredentials().toString()).isEqualTo(jwt); }