alsatian/dist/core/expect/build-expect.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
require("reflect-metadata");
const matchers_1 = require("../matchers");
const fail_1 = require("./fail");
const matchers_2 = require("../matchers");
const spying_1 = require("../spying");
const object_matcher_1 = require("../matchers/object-matcher");
function buildExpect() {
    const EXPECT = ExpectFunction;
    EXPECT.fail = fail_1.fail;
    EXPECT.extend = ((expectedTypeConstructor, matcherConstructor) => {
        MATCHER_MAP.push([expectedTypeConstructor, matcherConstructor]);
        return EXPECT;
    });
    return EXPECT;
}
exports.buildExpect = buildExpect;
const MATCHER_MAP = [
    [Array, matchers_1.ContainerMatcher],
    [spying_1.FunctionSpy, matchers_1.FunctionMatcher],
    [spying_1.PropertySpy, matchers_1.PropertyMatcher],
    [Object, object_matcher_1.ObjectMatcher]
];
function ExpectFunction(actualValue) {
    const MATCHER = findMatcher(actualValue);
    return new MATCHER(actualValue);
}
function findMatcher(actualValue) {
    if (typeof actualValue === "object") {
        return getObjectMatcher(actualValue);
    }
    if (typeof actualValue === "function") {
        return matchers_1.FunctionMatcher;
    }
    return getPrimitiveMatcher(actualValue);
}
function getObjectMatcher(actualValue) {
    if (actualValue === null || actualValue === undefined) {
        return matchers_2.Matcher;
    }
    const proto = Object.getPrototypeOf(actualValue);
    if (proto === null) {
        return matchers_2.Matcher;
    }
    const match = MATCHER_MAP.find(matchPair => matchPair[0] === proto.constructor);
    return match ? match[1] : findMatcher(proto);
}
function getPrimitiveMatcher(actualValue) {
    if (typeof actualValue === "string") {
        return matchers_1.StringMatcher;
    }
    if (typeof actualValue === "number") {
        return matchers_1.NumberMatcher;
    }
    return matchers_2.Matcher;
}
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