SuitestAutomation/suitest-js-api

// Import helpers and composers
const parseJS = require('../utils/parseJS');
const makeChain = require('../utils/makeChain');
const SuitestError = require('../utils/SuitestError');
const {
    makeToStringComposer,
    makeThenComposer,
    abandonComposer,
    cloneComposer,
    notComposer,
    equalComposer,
    containComposer,
    startWithComposer,
    endWithComposer,
    timeoutComposer,
    gettersComposer,
    assertComposer,
    makeToJSONComposer,
} = require('../composers');
const {
    invalidInputMessage,
    'errorType.syntaxError.modifierMissing': modifierMissing,
} = require('../texts');
const {validate, validators} = require('../validation');
const {getRequestType} = require('../utils/socketChainHelper');
const {
    applyTimeout,
    applyNegation,
} = require('../utils/chainUtils');

const javascriptExpressionFactory = (classInstance) => {
    const toJSON = data => {
        const type = getRequestType(data);
        const socketMessage = {type};

        if (type === 'query') {
            socketMessage.subject = {
                type: 'execute',
                execute: data.expression,
            };
        } else {
            // assert jsExpression chain without comparator
            if (!data.comparator)
                throw new SuitestError(modifierMissing('jsExpression() assertion'), SuitestError.INVALID_INPUT);

            socketMessage.request = applyTimeout({
                type: 'assert',
                condition: {
                    subject: {
                        type: 'javascript',
                        val: data.expression,
                    },
                    type: applyNegation(data.comparator.type, data),
                    val: data.comparator.val,
                },
            }, data, classInstance.config.defaultTimeout);
        }

        return socketMessage;
    };

    // Build Composers
    const toStringComposer = makeToStringComposer(toJSON);
    const thenComposer = makeThenComposer(toJSON);
    const toJSONComposer = makeToJSONComposer(toJSON);

    /**
     * Function accepts data object of future chain as input
     * and returns a list of composers that should build the chain
     * @param data
     * @returns {*[]}
     */
    const getComposers = data => {
        const output = [
            toStringComposer,
            thenComposer,
            cloneComposer,
            gettersComposer,
            toJSONComposer,
        ];

        if (!data.isAssert) {
            output.push(assertComposer);
        }

        if (!data.isNegated) {
            output.push(notComposer);
        }

        if (!data.isAbandoned) {
            output.push(abandonComposer);
        }

        if (isNaN(data.timeout)) {
            output.push(timeoutComposer);
        }

        if (!data.comparator) {
            output.push(equalComposer, containComposer, startWithComposer, endWithComposer);
        }

        return output;
    };

    // Chain builder functions
    const jsExpressionChain = jsOrString => makeChain(classInstance, getComposers, {
        type: 'jsExpression',
        expression: validate(
            validators.NON_EMPTY_STRING,
            parseJS(jsOrString),
            invalidInputMessage('jsExpression', 'JavaScript expression')
        ),
    });

    return {
        jsExpression: jsExpressionChain,
        jsExpressionAssert: jsOrString => jsExpressionChain(jsOrString).toAssert(),

        // For testing
        toJSON,
    };
};

module.exports = javascriptExpressionFactory;