import std.array;
version (Posix)
{
    assert(chainPath("foo", "bar", "baz").array == "foo/bar/baz");
    assert(chainPath("/foo/", "bar/baz").array  == "/foo/bar/baz");
    assert(chainPath("/foo", "/bar").array      == "/bar");
}

version (Windows)
{
    assert(chainPath("foo", "bar", "baz").array == `foo\bar\baz`);
    assert(chainPath(`c:\foo`, `bar\baz`).array == `c:\foo\bar\baz`);
    assert(chainPath("foo", `d:\bar`).array     == `d:\bar`);
    assert(chainPath("foo", `\bar`).array       == `\bar`);
    assert(chainPath(`c:\foo`, `\bar`).array    == `c:\bar`);
}

import std.utf : byChar;
version (Posix)
{
    assert(chainPath("foo", "bar", "baz").array == "foo/bar/baz");
    assert(chainPath("/foo/".byChar, "bar/baz").array  == "/foo/bar/baz");
    assert(chainPath("/foo", "/bar".byChar).array      == "/bar");
}

version (Windows)
{
    assert(chainPath("foo", "bar", "baz").array == `foo\bar\baz`);
    assert(chainPath(`c:\foo`.byChar, `bar\baz`).array == `c:\foo\bar\baz`);
    assert(chainPath("foo", `d:\bar`).array     == `d:\bar`);
    assert(chainPath("foo", `\bar`.byChar).array       == `\bar`);
    assert(chainPath(`c:\foo`, `\bar`w).array    == `c:\bar`);
}