github.com/xyproto/u-root@v6.0.1-0.20200302025726-5528e0c77a3c+incompatible/pkg/strace/strace_test.go (about)

     1  // Copyright 2018 the u-root 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 strace
     6  
     7  import (
     8  	"os/exec"
     9  	"testing"
    10  )
    11  
    12  // It's not really easy to write a full up general tester for this.
    13  // Even the simplest commands on Linux have dozens of system calls.
    14  // The Go assembler should in principle let us write a 3 line assembly
    15  // program that just does an exit system call:
    16  // MOVQ $exit, RARG
    17  // SYSCALL
    18  // But that's for someone else to do :-)
    19  
    20  func TestNoCommandFail(t *testing.T) {
    21  	Debug = t.Logf
    22  	c, err := New()
    23  	if err != nil {
    24  		t.Fatal(err)
    25  	}
    26  	c.Raw = true
    27  	go c.RunTracerFromCmd(exec.Command("hi", "/etc/hosts"))
    28  	r := <-c.Records
    29  	if r.Err == nil {
    30  		t.Fatalf("Got nil, want a non-nil error")
    31  	}
    32  }
    33  
    34  func TestBasicStrace(t *testing.T) {
    35  	Debug = t.Logf
    36  	c, err := New()
    37  	if err != nil {
    38  		t.Fatal(err)
    39  	}
    40  
    41  	go c.RunTracerFromCmd(exec.Command("ls", "/etc/hosts"))
    42  	for range c.Records {
    43  
    44  	}
    45  }