alsatian/dist/core/matchers/function-matcher.js

TypeScript and JavaScript testing framework for beautiful and readable tests

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const spying_1 = require("../spying");
const function_spy_matcher_1 = require("./function-spy-matcher");
const matcher_1 = require("./matcher");
const stringification_1 = require("../stringification");
class FunctionMatcher extends matcher_1.Matcher {
    toThrow() {
        const error = this._getError();
        this._registerMatcher((error === null) !== this.shouldMatch, `Expected an error ` +
            `${this.shouldMatch ? "" : "not "}to be thrown ` +
            `but ${this.shouldMatch ? "no errors were" : "an error was"} thrown.`, this.shouldMatch ? "an error thrown" : "no errors thrown", {
            errorThrown: error ? error.toString() : "none"
        });
    }
    toThrowAsync() {
        return __awaiter(this, void 0, void 0, function* () {
            const error = yield this._getAsyncError();
            this._registerMatcher((error === null) !== this.shouldMatch, `Expected an error ` +
                `${this.shouldMatch ? "" : "not "}to be thrown ` +
                `but ${this.shouldMatch ? "no errors were" : "an error was"} thrown.`, this.shouldMatch ? "an error thrown" : "no errors thrown", {
                errorThrown: error ? error.toString() : "none"
            });
        });
    }
    toThrowError(errorType, errorMessage) {
        const error = this._getError();
        this._errorMatches(error, errorType, errorMessage);
    }
    toThrowErrorAsync(errorType, errorMessage) {
        return __awaiter(this, void 0, void 0, function* () {
            const error = yield this._getAsyncError();
            this._errorMatches(error, errorType, errorMessage);
        });
    }
    toHaveBeenCalled() {
        if (this._isFunctionSpyOrSpiedOnFunction(this.actualValue) === false) {
            throw new TypeError("toHaveBeenCalled requires value passed in to Expect to be a FunctionSpy or a spied on function.");
        }
        const spy = this.actualValue;
        this._registerMatcher((spy.calls.length === 0) !== this.shouldMatch, `Expected function ${!this.shouldMatch ? "not " : ""}to be called.`, `function ${!this.shouldMatch ? "not " : ""}to be called`);
        return new function_spy_matcher_1.FunctionSpyMatcher(spy);
    }
    toHaveBeenCalledWith(...expectedArguments) {
        if (this._isFunctionSpyOrSpiedOnFunction(this.actualValue) === false) {
            throw new TypeError("toHaveBeenCalledWith requires value passed in to Expect to be a FunctionSpy or a spied on function.");
        }
        const spy = this.actualValue;
        this._registerMatcher(spy.calls.some(call => this._callArgumentsMatch(call, expectedArguments)) === this.shouldMatch, `Expected function ${!this.shouldMatch ? "not " : ""}to be called` +
            `${this._stringifyArguments(expectedArguments)}.`, `function ${!this.shouldMatch ? "not " : ""}to be called` +
            `${this._stringifyArguments(expectedArguments)}.`, {
            expectedArguments: stringification_1.stringify(expectedArguments),
            actualArguments: stringification_1.stringify(spy.calls.map(call => call.args))
        });
        return new function_spy_matcher_1.FunctionSpyMatcher(spy, expectedArguments);
    }
    _stringifyArguments(expectedArguments) {
        return expectedArguments ? ` with ${stringification_1.stringify(expectedArguments)}` : "";
    }
    _getError() {
        try {
            this.actualValue();
            return null;
        }
        catch (error) {
            return error;
        }
    }
    _getAsyncError() {
        return __awaiter(this, void 0, void 0, function* () {
            try {
                yield this.actualValue();
                return null;
            }
            catch (error) {
                return error;
            }
        });
    }
    _errorMatches(error, errorType, errorMessage) {
        const threwRightError = error instanceof errorType && error.message === errorMessage;
        this._registerMatcher(threwRightError === this.shouldMatch, `Expected an error with ` +
            `${errorMessage ? `message "${errorMessage}"` : ""} ` +
            `${errorMessage && errorType ? "and " : ""}` +
            `${errorType ? `type ${errorType.name} to ${!this.shouldMatch ? "not " : ""}` : ""}` +
            `have been thrown, but it was${!this.shouldMatch ? "" : "n't"}.`, this.shouldMatch ? "an error of the right type thrown" : "no errors of type thrown", {
            actualError: error ? error.toString() : "none",
            expectedError: errorType.name,
            expectedErrorMessage: errorMessage
        });
    }
    _callArgumentsMatch(call, expectedArguments) {
        if (call.args.length !== expectedArguments.length) {
            return false;
        }
        return call.args.every((arg, index) => {
            const expectedArgument = expectedArguments[index];
            return (arg === expectedArgument ||
                expectedArgument === spying_1.Any ||
                (expectedArgument instanceof spying_1.TypeMatcher &&
                    expectedArgument.test(arg)));
        });
    }
    _isFunctionSpyOrSpiedOnFunction(value) {
        return (value instanceof spying_1.FunctionSpy ||
            (value instanceof Function && value.calls !== undefined));
    }
}
exports.FunctionMatcher = FunctionMatcher;
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