github.com/epfl-dcsl/gotee@v0.0.0-20200909122901-014b35f5e5e9/src/syscall/syscall_windows_test.go (about)

     1  // Copyright 2012 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package syscall_test
     6  
     7  import (
     8  	"io/ioutil"
     9  	"os"
    10  	"path/filepath"
    11  	"syscall"
    12  	"testing"
    13  )
    14  
    15  func TestWin32finddata(t *testing.T) {
    16  	dir, err := ioutil.TempDir("", "go-build")
    17  	if err != nil {
    18  		t.Fatalf("failed to create temp directory: %v", err)
    19  	}
    20  	defer os.RemoveAll(dir)
    21  
    22  	path := filepath.Join(dir, "long_name.and_extension")
    23  	f, err := os.Create(path)
    24  	if err != nil {
    25  		t.Fatalf("failed to create %v: %v", path, err)
    26  	}
    27  	f.Close()
    28  
    29  	type X struct {
    30  		fd  syscall.Win32finddata
    31  		got byte
    32  		pad [10]byte // to protect ourselves
    33  
    34  	}
    35  	var want byte = 2 // it is unlikely to have this character in the filename
    36  	x := X{got: want}
    37  
    38  	pathp, _ := syscall.UTF16PtrFromString(path)
    39  	h, err := syscall.FindFirstFile(pathp, &(x.fd))
    40  	if err != nil {
    41  		t.Fatalf("FindFirstFile failed: %v", err)
    42  	}
    43  	err = syscall.FindClose(h)
    44  	if err != nil {
    45  		t.Fatalf("FindClose failed: %v", err)
    46  	}
    47  
    48  	if x.got != want {
    49  		t.Fatalf("memory corruption: want=%d got=%d", want, x.got)
    50  	}
    51  }
    52  
    53  func abort(funcname string, err error) {
    54  	panic(funcname + " failed: " + err.Error())
    55  }
    56  
    57  func ExampleLoadLibrary() {
    58  	h, err := syscall.LoadLibrary("kernel32.dll")
    59  	if err != nil {
    60  		abort("LoadLibrary", err)
    61  	}
    62  	defer syscall.FreeLibrary(h)
    63  	proc, err := syscall.GetProcAddress(h, "GetVersion")
    64  	if err != nil {
    65  		abort("GetProcAddress", err)
    66  	}
    67  	r, _, _ := syscall.Syscall(uintptr(proc), 0, 0, 0, 0)
    68  	major := byte(r)
    69  	minor := uint8(r >> 8)
    70  	build := uint16(r >> 16)
    71  	print("windows version ", major, ".", minor, " (Build ", build, ")\n")
    72  }