NativeScript/tests/app/fetch/fetch-tests.ts

/* tslint:disable:no-unused-variable */
import * as TKUnit from "../tk-unit";
import * as types from "tns-core-modules/utils/types";

export var test_fetch_defined = function () {
    TKUnit.assert(types.isDefined((fetch)), "Method fetch() should be defined!");
};

export var test_fetch = function (done: (err: Error, res?: string) => void) {
    // >> fetch-response
    fetch("https://httpbin.org/get").then(function (r) {
        // Argument (r) is Response!
        // >> (hide)
        TKUnit.assert(r instanceof Response, "Result from fetch() should be valid Response object! Actual result is: " + r);
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-response
};

export var test_fetch_text = function (done: (err: Error, res?: string) => void) {
    // >> fetch-string
    fetch("https://httpbin.org/get").then(response => response.text()).then(function (r) {
        // Argument (r) is string!
        // >> (hide)
        TKUnit.assert(types.isString(r), "Result from text() should be string! Actual result is: " + r);
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-string
};

export var test_fetch_json = function (done: (err: Error, res?: string) => void) {
    // >> fetch-json
    fetch("https://httpbin.org/get").then(response => response.json()).then(function (r) {
        // Argument (r) is JSON object!
        // >> (hide)
        TKUnit.assertNotNull(r, "Result from json() should be JSON object!");
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-json
};

export var test_fetch_formData = function (done: (err: Error, res?: string) => void) {
    // >> fetch-formdata
    fetch("https://httpbin.org/get").then(response => response.formData()).then(function (r) {
        // Argument (r) is FormData object!
        // >> (hide)
        TKUnit.assert(r instanceof FormData, "Result from formData() should be FormData object! Actual result is: " + r);
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-formdata
};

export var test_fetch_fail_invalid_url = function (done) {
    var completed: boolean;
    var isReady = function () { return completed; };

    fetch("hgfttp://httpbin.org/get").catch(function (e) {
        completed = true;
        done(null);
    }).catch(failOnError(done));
};

export var test_fetch_invalid_url_fail_message = function (done) {
    fetch("hgfttp://httpbin.org/get").catch(function (e: TypeError) {
        TKUnit.assert(e.message.match(/Network request failed:.{2,}/), "Failure message should contain details on the failure. Actual message was: " + e.message);
        done(null);
    }).catch(failOnError(done));
};

export var test_fetch_response_status = function (done) {

    // >> fetch-status-response
    fetch("https://httpbin.org/get").then(function (response) {
        // Argument (response) is Response!
        var statusCode = response.status;
        // >> (hide)
        TKUnit.assert(types.isDefined(statusCode), "response.status should be defined! Actual result is: " + statusCode);
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-status-response
};

export var test_fetch_response_headers = function (done) {

    // >> fetch-headers-response
    fetch("https://httpbin.org/get").then(function (response) {
        // Argument (response) is Response!
        // var all = response.headers.getAll();
        // >> (hide)
        TKUnit.assert(types.isDefined(response.headers), "response.headers should be defined! Actual result is: " + response.headers);
        done(null);
        // << (hide)
    }).catch(failOnError(done));
    // << fetch-headers-response
};

export var test_fetch_headers_sent = function (done) {
    fetch("https://httpbin.org/get", {
        method: "GET",
        headers: new Headers({ "Content-Type": "application/json" }),
    }).then(function (response) {
        var result = response.headers;
        TKUnit.assert(result.get("Content-Type") === "application/json", "Headers not sent/received properly! Actual result is: " + result);
        done(null);
    }).catch(failOnError(done));
};

export var test_fetch_post_form_data = function (done) {
    var data = new FormData();
    data.append("MyVariableOne", "ValueOne");
    data.append("MyVariableTwo", "ValueTwo");

    fetch("https://httpbin.org/post", {
        method: "POST",
        headers: new Headers({ "Content-Type": "application/x-www-form-urlencoded" }),
        body: data
    }).then(r => {
        return r.formData();
    }).then(function (r) {
        TKUnit.assert(r instanceof FormData, "Content not sent/received properly! Actual result is: " + r);
        done(null);
    }).catch(failOnError(done));
};

export var test_fetch_post_json = function (done) {
    // >> fetch-post-json
    fetch("https://httpbin.org/post", {
        method: "POST",
        headers: new Headers({ "Content-Type": "application/json" }),
        body: JSON.stringify({ MyVariableOne: "ValueOne", MyVariableTwo: "ValueTwo" })
    }).then(r => r.json()).then(function (r) {
        // >> (hide)
        TKUnit.assert(r.json["MyVariableOne"] === "ValueOne" && r.json["MyVariableTwo"] === "ValueTwo", "Content not sent/received properly! Actual result is: " + r.json);
        done(null);
        // << (hide)
        // console.log(result);
    }).catch(failOnError(done));
    // << fetch-post-json
};

const failOnError = function (done: (err: Error, res?: string) => void) {
    return e => done(e);
};