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package main_test
import (
"bytes"
"os"
"os/exec"
"strings"
"testing"
)
// testIt runs @cmdTest with @argv and compares the generated
// output for @name with the corresponding @extRef reference file
func testIt(t *testing.T, name string, argv ...string) {
var (
diffOut bytes.Buffer
generatedOutput = name + extGot
cmd = exec.Command(cmdTest, argv...)
)
t.Logf("Testing %s:\n\t%s %s\n", name, cmdTest, strings.Join(argv, " "))
// open the out file for writing
outfile, err := os.Create(generatedOutput)
if err != nil {
t.Errorf("write error [%s: %s] %s.", name, argv, err)
}
defer outfile.Close()
cmd.Stdout = outfile
err = cmd.Start()
if err != nil {
t.Errorf("start error [%s: %s] %s.", name, argv, err)
}
err = cmd.Wait()
if err != nil {
t.Errorf("exit error [%s: %s] %s.", name, argv, err)
}
cmd = exec.Command("diff", "-U1", name+extRef, generatedOutput)
cmd.Stdout = &diffOut
err = cmd.Start()
if err != nil {
t.Errorf("start error %s [%s: %s]", err, name, argv)
}
err = cmd.Wait()
if err != nil {
t.Errorf("cmp error %s [%s: %s]\n%s", err, name, argv, diffOut.String())
}
//os.Remove(generatedOutput)
}
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