ChecksTest.cs

// Copyright (C) 2023 NexusKrop & contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace NexusKrop.IceCube.Tests;

using NexusKrop.IceCube.Exceptions;
using System;

public class ChecksTest
{
    [Test]
    public void ArgNotNull_ThrowsWhenNull()
    {
        var x = Assert.Throws<ArgumentNullException>(() => ArgNotNull_Internal(null));
        Assert.That(x.ParamName, Is.EqualTo("arg"));
    }

    [Test]
    public void ArgNotNullOrEmpty_ThrowsWhenEmpty()
    {
        var x = Assert.Throws<ArgumentException>(() => ArgNotNullOrWhitespace_Internal(string.Empty));
        Assert.That(x.ParamName, Is.EqualTo("arg"));
    }

    [Test]
    public void ArgNotNullOrEmpty_ThrowsWhenWhitespace()
    {
        var x = Assert.Throws<ArgumentException>(() => ArgNotNullOrWhitespace_Internal("    "));
        Assert.That(x.ParamName, Is.EqualTo("arg"));
    }

    [Test]
    public void FileExists_ThrowsIfNotExist()
    {
        Assert.Throws<FileNotFoundException>(() =>
            Checks.FileExists("/asdasd/as/f/as/fas/d/asd/as/ds/"));
    }

    [Test]
    public void DirectoryExists_ThrowsIfNotExist()
    {
        Assert.Throws<DirectoryNotFoundException>(() =>
            Checks.DirectoryExists("/asdf/ew/g/rr/a/e/gwe/fw/ef"));
    }

    [Test]
    public void OsPlatformCheckTest()
    {
        if (OperatingSystem.IsWindows())
        {
            Checks.OnWindows();
        }
        else if (OperatingSystem.IsLinux())
        {
            Checks.OnLinux();
        }
        else
        {
            Assert.Fail("Unknown OS platform.");
        }
    }

    private static void ArgNotNullOrWhitespace_Internal(string? arg)
    {
        Checks.ArgNotNullOrWhitespace(arg);
    }

    private static void ArgNotNull_Internal(string? arg)
    {
        Checks.ArgNotNull(arg);
    }
}