import {assert} from "chai";

import * as Destinations from "./destinations";
import {LocationOption, Options} from "./options";
import * as TestUtilities from "./testUtilities";
import {Directory} from "./utilities";

describe("destinations module has a", () => {
    describe("getDestinations function that", () => {
        let directory: Directory;
        let destinations: Directory[];
        let options: Options;
        let logged: string[];
        const testMode = (mode: LocationOption, getExpectedDestinations: () => Directory[], expectedLogs: string[]) => {
            describe(`when in '${mode}' mode`, () => {
                beforeEach(() => {
                    options.location = mode;
                    destinations = Destinations.getDestinations(directory, options);
                });
                it("should select the correct destinations", () => {
                    assert.deepEqual(destinations, getExpectedDestinations());
                });
                it("should log useful information to the logger", () => {
                    assert.deepEqual(logged, expectedLogs);
                });
            });
        };
        beforeEach(() => {
            directory = TestUtilities.mockDirectoryTree();
            logged = [];
            options = TestUtilities.mockOptions(logged);
        });
        testMode(
            "top",
            () => [directory],
            [
                "Destinations:",
                "./directory1",
            ]);
        testMode(
            "below",
            () => directory.directories,
            [
                "Destinations:",
                "directory1/directory2",
                "directory1/directory3",
            ]);
        testMode(
            "all",
            () => [
                directory.directories[0].directories[0],
                directory.directories[0],
                directory.directories[1],
                directory,
            ],
            [
                "Destinations:",
                "directory1/directory2/directory4",
                "directory1/directory2",
                "directory1/directory3",
                "./directory1",
            ]);
        testMode(
            "replace",
            () => [directory],
            [
                "Destinations:",
                "./directory1",
            ]);
        testMode(
            "branch",
            () => [directory.directories[0], directory],
            [
                "Destinations:",
                "directory1/directory2",
                "./directory1",
            ]);
    });
});