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285 lines
No EOL
11 KiB
JavaScript
285 lines
No EOL
11 KiB
JavaScript
/**
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* Each test run gets its own URL and randomized content and operates independently.
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*
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* Tests are an array of objects, each representing a request to make and check.
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* The cache.py server script stashes an entry containing observed headers for
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* each request it receives. When the test fetches have run, this state is retrieved
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* and the expected_* lists are checked, including their length.
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*
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* Request object keys:
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* - template - A template object for the request, by name -- see "templates" below.
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* - request_method - A string containing the HTTP method to be used.
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* - request_headers - An array of [header_name_string, header_value_string] arrays to
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* emit in the request.
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* - request_body - A string to use as the request body.
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* - mode - The mode string to pass to fetch().
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* - credentials - The credentials string to pass to fetch().
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* - cache - The cache string to pass to fetch().
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* - pause_after - Boolean controlling a 3-second pause after the request completes.
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* - response_status - A [number, string] array containing the HTTP status code
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* and phrase to return.
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* - response_headers - An array of [header_name_string, header_value_string] arrays to
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* emit in the response. These values will also be checked like
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* expected_response_headers, unless there is a third value that is
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* false.
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* - response_body - String to send as the response body. If not set, it will contain
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* the test identifier.
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* - expected_type - One of ["cached", "not_cached", "lm_validate", "etag_validate", "error"]
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* - expected_status - A number representing a HTTP status code to check the response for.
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* If not set, the value of response_status[0] will be used; if that
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* is not set, 200 will be used.
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* - expected_request_headers - An array of [header_name_string, header_value_string] representing
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* headers to check the request for.
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* - expected_response_headers - An array of [header_name_string, header_value_string] representing
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* headers to check the response for. See also response_headers.
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* - expected_response_text - A string to check the response body against.
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*/
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function make_url(uuid, requests, idx) {
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var arg = "";
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if ("query_arg" in requests[idx]) {
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arg = "&target=" + requests[idx].query_arg;
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}
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return "resources/http-cache.py?token=" + uuid + "&info=" + btoa(JSON.stringify(requests)) + arg;
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}
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function server_state(uuid) {
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return fetch("resources/http-cache.py?querystate&token=" + uuid)
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.then(function(response) {
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return response.text();
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}).then(function(text) {
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// null will be returned if the server never received any requests
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// for the given uuid. Normalize that to an empty list consistent
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// with our representation.
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return JSON.parse(text) || [];
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});
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}
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templates = {
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"fresh": {
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"response_headers": [
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['Expires', http_date(100000)],
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['Last-Modified', http_date(0)]
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]
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},
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"stale": {
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"response_headers": [
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['Expires', http_date(-5000)],
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['Last-Modified', http_date(-100000)]
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]
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},
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"lcl_response": {
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"response_headers": [
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['Location', "location_target"],
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['Content-Location', "content_location_target"]
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]
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},
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"location": {
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"query_arg": "location_target",
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"response_headers": [
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['Expires', http_date(100000)],
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['Last-Modified', http_date(0)]
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]
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},
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"content_location": {
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"query_arg": "content_location_target",
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"response_headers": [
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['Expires', http_date(100000)],
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['Last-Modified', http_date(0)]
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]
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}
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}
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function make_test(raw_requests) {
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var requests = [];
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for (var i = 0; i < raw_requests.length; i++) {
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var request = raw_requests[i];
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if ("template" in request) {
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var template = templates[request["template"]];
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for (var member in template) {
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if (! request.hasOwnProperty(member)) {
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request[member] = template[member];
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}
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}
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}
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if ("expected_type" in request && request.expected_type === "cached") {
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// requests after one that's expected to be cached will get out of sync
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// with the server; not currently supported.
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if (raw_requests.length > i + 1) {
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assert_unreached("Making requests after something is expected to be cached.");
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}
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}
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requests.push(request);
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}
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return function(test) {
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var uuid = token();
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var fetch_functions = [];
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for (var i = 0; i < requests.length; ++i) {
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fetch_functions.push({
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code: function(idx) {
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var init = {};
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var url = make_url(uuid, requests, idx);
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var config = requests[idx];
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if ("request_method" in config) {
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init.method = config["request_method"];
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}
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if ("request_headers" in config) {
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init.headers = config["request_headers"];
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}
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if ("request_body" in config) {
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init.body = config["request_body"];
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}
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if ("mode" in config) {
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init.mode = config["mode"];
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}
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if ("credentials" in config) {
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init.mode = config["credentials"];
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}
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if ("cache" in config) {
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init.cache = config["cache"];
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}
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return fetch(url, init)
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.then(function(response) {
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var res_num = parseInt(response.headers.get("Server-Request-Count"));
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var req_num = idx + 1;
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if ("expected_type" in config) {
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if (config.expected_type === "error") {
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assert_true(false, "Request " + req_num + " should have been an error");
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return [response.text(), response_status];
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}
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if (config.expected_type === "cached") {
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assert_less_than(res_num, req_num, "Response used");
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}
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if (config.expected_type === "not_cached") {
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assert_equals(res_num, req_num, "Response used");
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}
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}
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if ("expected_status" in config) {
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assert_equals(response.status, config.expected_status, "Response status");
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} else if ("response_status" in config) {
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assert_equals(response.status, config.response_status[0], "Response status");
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} else {
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assert_equals(response.status, 200, "Response status")
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}
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if ("response_headers" in config) {
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config.response_headers.forEach(function(header) {
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if (header.len < 3 || header[2] === true) {
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assert_equals(response.headers.get(header[0]), header[1], "Response header")
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}
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})
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}
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if ("expected_response_headers" in config) {
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config.expected_response_headers.forEach(function(header) {
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assert_equals(response.headers.get(header[0]), header[1], "Response header");
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});
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}
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return response.text();
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}).then(function(res_body) {
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if ("expected_response_text" in config) {
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assert_equals(res_body, config.expected_response_text, "Response body");
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} else if ("response_body" in config) {
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assert_equals(res_body, config.response_body, "Response body");
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} else {
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assert_equals(res_body, uuid, "Response body");
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}
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}, function(reason) {
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if ("expected_type" in config && config.expected_type === "error") {
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assert_throws(new TypeError(), function() { throw reason; });
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} else {
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throw reason;
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}
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});
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},
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pause_after: "pause_after" in requests[i] && true || false
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});
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}
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function pause() {
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return new Promise(function(resolve, reject) {
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step_timeout(function() {
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return resolve()
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}, 3000);
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});
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}
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// TODO: it would be nice if this weren't serialised.
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var idx = 0;
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function run_next_step() {
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if (fetch_functions.length) {
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var fetch_function = fetch_functions.shift();
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if (fetch_function.pause_after > 0) {
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return fetch_function.code(idx++)
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.then(pause)
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.then(run_next_step);
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} else {
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return fetch_function.code(idx++)
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.then(run_next_step);
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}
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} else {
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return Promise.resolve();
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}
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}
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return run_next_step()
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.then(function() {
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// Now, query the server state
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return server_state(uuid);
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}).then(function(state) {
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for (var i = 0; i < requests.length; ++i) {
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var expected_validating_headers = []
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var req_num = i + 1;
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if ("expected_type" in requests[i]) {
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if (requests[i].expected_type === "cached") {
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assert_true(state.length <= i, "cached response used for request " + req_num);
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continue; // the server will not see the request, so we can't check anything else.
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}
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if (requests[i].expected_type === "not_cached") {
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assert_false(state.length <= i, "cached response used for request " + req_num);
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}
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if (requests[i].expected_type === "etag_validated") {
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expected_validating_headers.push('if-none-match')
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}
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if (requests[i].expected_type === "lm_validated") {
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expected_validating_headers.push('if-modified-since')
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}
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}
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for (var j in expected_validating_headers) {
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var vhdr = expected_validating_headers[j];
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assert_own_property(state[i].request_headers, vhdr, " has " + vhdr + " request header");
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}
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if ("expected_request_headers" in requests[i]) {
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var expected_request_headers = requests[i].expected_request_headers;
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for (var j = 0; j < expected_request_headers.length; ++j) {
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var expected_header = expected_request_headers[j];
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assert_equals(state[i].request_headers[expected_header[0].toLowerCase()],
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expected_header[1]);
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}
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}
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}
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});
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};
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}
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function run_tests(tests)
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{
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tests.forEach(function(info) {
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promise_test(make_test(info.requests), info.name);
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});
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}
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function http_date(delta) {
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return new Date(Date.now() + (delta * 1000)).toGMTString();
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}
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var content_store = {};
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function http_content(cs_key) {
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if (cs_key in content_store) {
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return content_store[cs_key];
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} else {
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var content = btoa(Math.random() * Date.now());
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content_store[cs_key] = content;
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return content;
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}
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} |