import {toolchain_args} from "../src/args";
import {morph} from "mock-env"
import {sync as tempWriteSync} from "temp-write"

describe('actions-rs/toolchain', () => {
    it('Parses action input into toolchain options', async () => {
        let args = morph(() => {
            return toolchain_args("./rust-toolchain");
        }, {
            'INPUT_TOOLCHAIN': 'nightly-2019-04-20',
            'INPUT_DEFAULT': 'false',
            'INPUT_OVERRIDE': 'true'
        });

        expect(args.name).toBe('nightly-2019-04-20');
        expect(args.default).toBe(false);
        expect(args.override).toBe(true);
    });

    it('uses input variable if rust-toolchain file does not exist', function () {
        let args = morph(() => {
            return toolchain_args("./rust-toolchain");
        }, {
            'INPUT_TOOLCHAIN': 'nightly',
        });

        expect(args.name).toBe("nightly")
    });

    it('toolchain input is required if rust-toolchain does not exist', function () {
        expect(() => toolchain_args("./rust-toolchain")).toThrowError()
    });

    it('prioritizes rust-toolchain file over input variable', function () {
        let rustToolchainFile = tempWriteSync("1.39.0");

        let args = morph(() => {
            return toolchain_args(rustToolchainFile);
        }, {
            'INPUT_TOOLCHAIN': 'nightly',
        });

        expect(args.name).toBe("1.39.0")
    });

    it('trims content of the override file', function () {
        let rustToolchainFile = tempWriteSync("\n     1.39.0\n\n\n\n");

        let args = morph(() => {
            return toolchain_args(rustToolchainFile);
        }, {
            'INPUT_TOOLCHAIN': 'nightly',
        });

        expect(args.name).toBe("1.39.0")
    });
});