FileOrDirectoryExists Constraint

FileOrDirectoryExistsConstraint tests that a file or directory exists at the specified path.

Usage

Does.Exist
Does.Not.Exist

Modifiers

.IgnoreDirectories   // Only check for file existence
.IgnoreFiles         // Only check for directory existence

Examples

[Test]
public void FileOrDirectoryExistsConstraint_Examples()
{
    var tempFile = Path.GetTempFileName();
    var tempDir = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
    Directory.CreateDirectory(tempDir);

    try
    {
        // Test file or directory existence
        Assert.That(tempFile, Does.Exist);
        Assert.That(tempDir, Does.Exist);
        Assert.That("nonexistent.txt", Does.Not.Exist);

        // Test with FileInfo/DirectoryInfo
        Assert.That(new FileInfo(tempFile), Does.Exist);
        Assert.That(new DirectoryInfo(tempDir), Does.Exist);
    }
    finally
    {
        File.Delete(tempFile);
        Directory.Delete(tempDir);
    }
}

Notes

  1. The constraint accepts string paths, FileInfo, or DirectoryInfo objects.
  2. By default, the constraint passes if either a file or directory exists at the path.
  3. Use .IgnoreDirectories to require a file specifically.
  4. Use .IgnoreFiles to require a directory specifically.

See Also