# Test script to test the failure modes of Test::HTML::Content
use Test::More;
use lib 't';
use testlib;

BEGIN {
  eval {
    require Test::Builder::Tester;
    Test::Builder::Tester->import;
  };

  if ($@) {
    plan skip_all => "Test::Builder::Tester required for testing error messages";
  }
};

# perldelta 5.14
# Accept both old and new-style stringification
my $modifiers = (qr/foobar/ =~ /\Q(?^/) ? "^" : "-xism";

sub run {
  # Test that each exported function fails as documented
  test_out("not ok 1 - Link failure (no links)");
  test_fail(+8);
  if ($Test::HTML::Content::can_xpath eq 'XML::LibXML') {
    test_diag("Invalid HTML:","");
  } else {
    test_diag("Expected to find at least one <a> tag(s) matching",
              "  href = http://www.perl.com",
              "Got none");
  };
  link_ok("","http://www.perl.com","Link failure (no links)");
  test_test("Finding no link works");

  test_out("not ok 1 - Link failure (two links that don't match)");
  test_fail(+14);
  if ($Test::HTML::Content::can_xpath eq 'XML::LibXML') {
    test_diag("Expected to find at least one <a> tag(s) matching",
              "  href = http://www.perl.com",
              "Got",
              '  <a href="http://www.foo.com">foo</a>',
              '  <a href="index.html">Home</a>');
  } else {
    test_diag("Expected to find at least one <a> tag(s) matching",
              "  href = http://www.perl.com",
              "Got",
              "  <a href='http://www.foo.com'>",
              "  <a href='index.html'>");
  };
  link_ok("<a href='http://www.foo.com'>foo</a><a href='index.html'>Home</a>",
          "http://www.perl.com","Link failure (two links that don't match)");
  test_test("Finding no link returns all other links");

  test_out("not ok 1 - Link failure (two links shouldn't exist do)");
  test_fail(+14);
  if ($Test::HTML::Content::can_xpath eq 'XML::LibXML') {
    test_diag("Expected to find no <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              '  <a href="http://www.foo.com">foo</a>',
              '  <a href="index.html">Home</a>');
  } else {
    test_diag("Expected to find no <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              "  <a href='http://www.foo.com'>",
              "  <a href='index.html'>");
  };
  no_link("<a href='http://www.foo.com'>foo</a><a href='index.html'>Home</a>",
          qr".","Link failure (two links shouldn't exist do)");
  test_test("Finding a link where one should be returns all other links");

  test_out("not ok 1 - Link failure (too few links)");
  test_fail(+14);
  if ($Test::HTML::Content::can_xpath eq 'XML::LibXML') {
    test_diag("Expected to find exactly 3 <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              '  <a href="http://www.foo.com">foo</a>',
              '  <a href="index.html">Home</a>');
  } else {
    test_diag("Expected to find exactly 3 <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              "  <a href='http://www.foo.com'>",
              "  <a href='index.html'>");
  };
  link_count("<a href='http://www.foo.com'>foo</a><a href='index.html'>Home</a>",qr".",3,"Link failure (too few links)");
  test_test("Diagnosing too few links works");

  test_out("not ok 1 - Link failure (too many links)");
  test_fail(+18);
  if ($Test::HTML::Content::can_xpath eq 'XML::LibXML') {
    test_diag("Expected to find exactly 3 <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              '  <a href="http://www.bar.com">bar</a>',
              '  <a href="http://www.dot.com">.</a>',
              '  <a href="http://www.foo.com">foo</a>',
              '  <a href="index.html">Home</a>');
  } else {
    test_diag("Expected to find exactly 3 <a> tag(s) matching",
              "  href = (?$modifiers:.)",
              "Got",
              "  <a href='http://www.bar.com'>",
              "  <a href='http://www.dot.com'>",
              "  <a href='http://www.foo.com'>",
              "  <a href='index.html'>");
  };
  link_count("<a href='http://www.bar.com'>bar</a><a href='http://www.dot.com'>.</a><a href='http://www.foo.com'>foo</a><a href='index.html'>Home</a>",qr".",3,"Link failure (too many links)");
  test_test("Diagnosing too many links works");
};

runtests( 5,\&run);