function doTest(updates, assertions, expectError) {
  if (expectError) {
    doUpdateTest(updates, assertions, updateError, runNextTest);
  } else {
    doUpdateTest(updates, assertions, runNextTest, updateError);
  }
}

// Never use the same URLs for multiple tests, because we aren't guaranteed
// to reset the database between tests.
function testFillDb() {
  var add1Urls = ["zaz.com/a", "yxz.com/c"];

  var update = "n:1000\n";
  update += "i:test-phish-simple\n";

  var update1 = buildBareUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update1) + "\n";

  var assertions = {
    tableData: "test-phish-simple;a:1",
    urlsExist: add1Urls,
  };

  doTest([update], assertions, false);
}

function testSimpleForward() {
  var add1Urls = ["foo-simple.com/a", "bar-simple.com/c"];
  var add2Urls = ["foo-simple.com/b"];
  var add3Urls = ["bar-simple.com/d"];

  var update = "n:1000\n";
  update += "i:test-phish-simple\n";

  var update1 = buildBareUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update1) + "\n";

  var update2 = buildBareUpdate([{ chunkNum: 2, urls: add2Urls }]);
  update += "u:data:," + encodeURIComponent(update2) + "\n";

  var update3 = buildBareUpdate([{ chunkNum: 3, urls: add3Urls }]);
  update += "u:data:," + encodeURIComponent(update3) + "\n";

  var assertions = {
    tableData: "test-phish-simple;a:1-3",
    urlsExist: add1Urls.concat(add2Urls).concat(add3Urls),
  };

  doTest([update], assertions, false);
}

// Make sure that a nested forward (a forward within a forward) causes
// the update to fail.
function testNestedForward() {
  var add1Urls = ["foo-nested.com/a", "bar-nested.com/c"];
  var add2Urls = ["foo-nested.com/b"];

  var update = "n:1000\n";
  update += "i:test-phish-simple\n";

  var update1 = buildBareUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update1) + "\n";

  var update2 = buildBareUpdate([{ chunkNum: 2 }]);
  var update3 = buildBareUpdate([{ chunkNum: 3, urls: add1Urls }]);

  update2 += "u:data:," + encodeURIComponent(update3) + "\n";

  update += "u:data:," + encodeURIComponent(update2) + "\n";

  var assertions = {
    tableData: "",
    urlsDontExist: add1Urls.concat(add2Urls),
  };

  doTest([update], assertions, true);
}

// An invalid URL forward causes the update to fail.
function testInvalidUrlForward() {
  var add1Urls = ["foo-invalid.com/a", "bar-invalid.com/c"];

  var update = buildPhishingUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:asdf://blah/blah\n"; // invalid URL scheme

  // add1Urls is present, but that is an artifact of the way we do the test.
  var assertions = {
    tableData: "test-phish-simple;a:1",
    urlsExist: add1Urls,
  };

  doTest([update], assertions, true);
}

// A failed network request causes the update to fail.
function testErrorUrlForward() {
  var add1Urls = ["foo-forward.com/a", "bar-forward.com/c"];

  var update = buildPhishingUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:http://test.invalid/asdf/asdf\n"; // invalid URL scheme

  // add1Urls is present, but that is an artifact of the way we do the test.
  var assertions = {
    tableData: "test-phish-simple;a:1",
    urlsExist: add1Urls,
  };

  doTest([update], assertions, true);
}

function testMultipleTables() {
  var add1Urls = ["foo-multiple.com/a", "bar-multiple.com/c"];
  var add2Urls = ["foo-multiple.com/b"];
  var add3Urls = ["bar-multiple.com/d"];
  var add4Urls = ["bar-multiple.com/e"];
  var add6Urls = ["bar-multiple.com/g"];

  var update = "n:1000\n";
  update += "i:test-phish-simple\n";

  var update1 = buildBareUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update1) + "\n";

  var update2 = buildBareUpdate([{ chunkNum: 2, urls: add2Urls }]);
  update += "u:data:," + encodeURIComponent(update2) + "\n";

  update += "i:test-malware-simple\n";

  var update3 = buildBareUpdate([{ chunkNum: 3, urls: add3Urls }]);
  update += "u:data:," + encodeURIComponent(update3) + "\n";

  update += "i:test-unwanted-simple\n";
  var update4 = buildBareUpdate([{ chunkNum: 4, urls: add4Urls }]);
  update += "u:data:," + encodeURIComponent(update4) + "\n";

  update += "i:test-block-simple\n";
  var update6 = buildBareUpdate([{ chunkNum: 6, urls: add6Urls }]);
  update += "u:data:," + encodeURIComponent(update6) + "\n";

  var assertions = {
    tableData:
      "test-block-simple;a:6\ntest-malware-simple;a:3\ntest-phish-simple;a:1-2\ntest-unwanted-simple;a:4",
    urlsExist: add1Urls.concat(add2Urls),
    malwareUrlsExist: add3Urls,
    unwantedUrlsExist: add4Urls,
    blockedUrlsExist: add6Urls,
  };

  doTest([update], assertions, false);
}

function testUrlInMultipleTables() {
  var add1Urls = ["foo-forward.com/a"];

  var update = "n:1000\n";
  update += "i:test-phish-simple\n";

  var update1 = buildBareUpdate([{ chunkNum: 1, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update1) + "\n";

  update += "i:test-malware-simple\n";
  var update2 = buildBareUpdate([{ chunkNum: 2, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update2) + "\n";

  update += "i:test-unwanted-simple\n";
  var update3 = buildBareUpdate([{ chunkNum: 3, urls: add1Urls }]);
  update += "u:data:," + encodeURIComponent(update3) + "\n";

  var assertions = {
    tableData:
      "test-malware-simple;a:2\ntest-phish-simple;a:1\ntest-unwanted-simple;a:3",
    urlExistInMultipleTables: {
      url: add1Urls,
      tables: "test-malware-simple,test-phish-simple,test-unwanted-simple",
    },
  };

  doTest([update], assertions, false);
}

function Observer(callback) {
  this.observe = callback;
}

Observer.prototype = {
  QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
};

// Tests a database reset request.
function testReset() {
  // The moz-phish-simple table is populated separately from the other update in
  // a separate update request. Therefore it should not be reset when we run the
  // updates later in this function.
  var mozAddUrls = ["moz-reset.com/a"];
  var mozUpdate = buildMozPhishingUpdate([{ chunkNum: 1, urls: mozAddUrls }]);

  var dataUpdate = "data:," + encodeURIComponent(mozUpdate);

  streamUpdater.downloadUpdates(
    mozTables,
    "",
    true,
    dataUpdate,
    () => {},
    updateError,
    updateError
  );

  var addUrls1 = ["foo-reset.com/a", "foo-reset.com/b"];
  var update1 = buildPhishingUpdate([{ chunkNum: 1, urls: addUrls1 }]);

  var update2 = "n:1000\nr:pleasereset\n";

  var addUrls3 = ["bar-reset.com/a", "bar-reset.com/b"];
  var update3 = buildPhishingUpdate([{ chunkNum: 3, urls: addUrls3 }]);

  var assertions = {
    tableData: "moz-phish-simple;a:1\ntest-phish-simple;a:3", // tables that should still be there.
    mozPhishingUrlsExist: mozAddUrls, // mozAddUrls added prior to the reset
    // but it should still exist after reset.
    urlsExist: addUrls3, // addUrls3 added after the reset.
    urlsDontExist: addUrls1, // addUrls1 added prior to the reset
  };

  // Use these update responses in order. The update request only
  // contains test-*-simple tables so the reset will only apply to these.
  doTest([update1, update2, update3], assertions, false);
}

function run_test() {
  runTests([
    testFillDb,
    testSimpleForward,
    testNestedForward,
    testInvalidUrlForward,
    testErrorUrlForward,
    testMultipleTables,
    testUrlInMultipleTables,
    testReset,
  ]);
}

do_test_pending();