formatOutput.test.ts

import { formatOutput } from "./formatOutput";
import { EOL } from "os";

describe("formatOutput", () => {
    it("formats output as JavaScript for a .js file path", () => {
        // Arrange
        const outputPath = ".eslintrc.js";
        const configuration = { rules: {} };

        // Act
        const output = formatOutput(outputPath, configuration);

        // Assert
        expect(output).toBe(
            `module.exports = ${JSON.stringify(configuration, undefined, 4)};${EOL}`,
        );
    });

    it("formats output as JSON for a .json file path", () => {
        // Arrange
        const outputPath = ".eslintrc.json";
        const configuration = { rules: {} };

        // Act
        const output = formatOutput(outputPath, configuration);

        // Assert
        expect(output).toBe(`${JSON.stringify(configuration, undefined, 4)}${EOL}`);
    });

    it("formats output as JSON for an unknown dot file path", () => {
        // Arrange
        const outputPath = ".eslintrc";
        const configuration = { rules: {} };

        // Act
        const output = formatOutput(outputPath, configuration);

        // Assert
        expect(output).toBe(`${JSON.stringify(configuration, undefined, 4)}${EOL}`);
    });

    it("formats output as JSON for an unknown raw file path", () => {
        // Arrange
        const outputPath = "eslintrc";
        const configuration = { rules: {} };

        // Act
        const output = formatOutput(outputPath, configuration);

        // Assert
        expect(output).toBe(`${JSON.stringify(configuration, undefined, 4)}${EOL}`);
    });
});