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https://github.com/golang/go
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f78ead3ca4
while we are at it, fix some out-of-date comments. R=golang-dev, dave, r CC=golang-dev https://golang.org/cl/6498054
73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package syscall_test
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"syscall"
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"testing"
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)
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func TestWin32finddata(t *testing.T) {
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dir, err := ioutil.TempDir("", "go-build")
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if err != nil {
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t.Fatalf("failed to create temp directory: %v", err)
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}
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defer os.RemoveAll(dir)
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path := filepath.Join(dir, "long_name.and_extension")
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f, err := os.Create(path)
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if err != nil {
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t.Fatalf("failed to create %v: %v", path, err)
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}
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f.Close()
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type X struct {
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fd syscall.Win32finddata
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got byte
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pad [10]byte // to protect ourselves
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}
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var want byte = 2 // it is unlikely to have this character in the filename
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x := X{got: want}
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pathp, _ := syscall.UTF16PtrFromString(path)
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h, err := syscall.FindFirstFile(pathp, &(x.fd))
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if err != nil {
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t.Fatalf("FindFirstFile failed: %v", err)
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}
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err = syscall.FindClose(h)
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if err != nil {
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t.Fatalf("FindClose failed: %v", err)
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}
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if x.got != want {
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t.Fatalf("memory corruption: want=%d got=%d", want, x.got)
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}
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}
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func abort(funcname string, err error) {
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panic(funcname + " failed: " + err.Error())
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}
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func ExampleLoadLibrary() {
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h, err := syscall.LoadLibrary("kernel32.dll")
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if err != nil {
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abort("LoadLibrary", err)
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}
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defer syscall.FreeLibrary(h)
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proc, err := syscall.GetProcAddress(h, "GetVersion")
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if err != nil {
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abort("GetProcAddress", err)
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}
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r, _, _ := syscall.Syscall(uintptr(proc), 0, 0, 0, 0)
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major := byte(r)
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minor := uint8(r >> 8)
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build := uint16(r >> 16)
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print("windows version ", major, ".", minor, " (Build ", build, ")\n")
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}
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