/// Positive tests — these must compile and produce correct results.
/// Run: dmd -i -run test_positive.d
import lib;
unable to read module `lib`
Expected 'lib.d' or 'lib/package.d' in one of the following import paths:
unable to read module `lib`
Expected 'lib.d' or 'lib/package.d' in one of the following import paths:

void 
void D main()main()
{
    import 
(package) stdstd.
(module) std.stdio
Category 
Symbols 
File handles 
_popen File isFileHandle openNetwork stderr stdin stdout 
Reading 
chunks lines readf readfln readln 
Writing 
toFile write writef writefln writeln 
Misc 
KeepTerminator LockType StdioException 
Standard I/O functions that extend core.stdc.stdio.  core.stdc.stdio
is publically imported when importing std.stdio.
There are three layers of I/O:
The lowest layer is the operating system layer. The two main schemes are Windows and Posix.
C's stdio.h which unifies the two operating system schemes.
std.stdio, this module, unifies the various stdio.h implementations into
    a high level package for D programs.
Source
std/stdio.d
@copyrightCopyright The D Language Foundation 2007-.@licenseBoost License 1.0.@authorsWalter Bright,
Andrei Alexandrescu,
Alex Rønne Petersenstdio : 
(alias template) writefln = std.stdio.writefln(alias fmt, A...)(A args) if (isSomeString!(typeof(fmt)))
Equivalent to $(D writef(fmt, args, '\n')).writefln;

    // Function: named args skip the sentinel
    auto 
(local variable) _error_ r1r1 = lib.inflateRect(x: 10, y: 20, width: 100, height: 200, margin: 5);
forward reference of import `lib`
    assert(r1 == lib.Rect(5, 15, 110, 210));
forward reference of import `lib`

    // Function: partial named args (rest get defaults)
    auto 
(local variable) _error_ r2r2 = lib.inflateRect(width: 50, height: 50);
forward reference of import `lib`
    assert(r2 == lib.Rect(0, 0, 50, 50));
forward reference of import `lib`

    // Struct: named field init skips sentinel
    auto 
(local variable) _error_ r3r3 = lib.makeRect(lib.RectOpts(x: 10, y: 20, width: 100, height: 200));
forward reference of import `lib`
    assert(r3 == lib.Rect(10, 20, 100, 200));
forward reference of import `lib`

    
void std.stdio.writefln!char(in char[] fmt) @safe
Equivalent to writef(fmt, args, '\n').writefln("All positive tests passed.");
}