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

TypeScript and JavaScript testing framework for beautiful and readable tests

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const matcher_1 = require("./matcher");
const stringification_1 = require("../stringification");
class EmptyMatcher extends matcher_1.Matcher {
    toBeEmpty() {
        const actualValue = this.actualValue;
        const length = this._getLength(actualValue);
        this._registerMatcher((length === 0) === this.shouldMatch, `Expected "${typeof actualValue === "string"
            ? actualValue
            : stringification_1.stringify(actualValue)}" ` + `${this.shouldMatch ? "" : "not "}to be empty.`, "value to be empty", {
            actualLength: length,
            expectedLength: this.shouldMatch ? 0 : "> 0"
        });
    }
    _getLength(value) {
        if (value instanceof Map) {
            return value.size;
        }
        if (value.length !== undefined) {
            return value.length;
        }
        return Object.keys(value).length;
    }
}
exports.EmptyMatcher = EmptyMatcher;
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