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docker_exec_test.go
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docker_exec_test.go
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package testcontainers
import (
"bytes"
"context"
"io"
"testing"
"github.com/docker/docker/pkg/stdcopy"
"github.com/stretchr/testify/require"
tcexec "github.com/testcontainers/testcontainers-go/exec"
)
func TestExecWithOptions(t *testing.T) {
tests := []struct {
name string
cmds []string
opts []tcexec.ProcessOption
want string
}{
{
name: "with user",
cmds: []string{"whoami"},
opts: []tcexec.ProcessOption{
tcexec.WithUser("nginx"),
},
want: "nginx\n",
},
{
name: "with working dir",
cmds: []string{"pwd"},
opts: []tcexec.ProcessOption{
tcexec.WithWorkingDir("/var/log/nginx"),
},
want: "/var/log/nginx\n",
},
{
name: "with env",
cmds: []string{"env"},
opts: []tcexec.ProcessOption{
tcexec.WithEnv([]string{"TEST_ENV=test"}),
},
want: "TEST_ENV=test\n",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ctx := context.Background()
req := ContainerRequest{
Image: nginxAlpineImage,
}
ctr, err := GenericContainer(ctx, GenericContainerRequest{
ContainerRequest: req,
Started: true,
})
CleanupContainer(t, ctr)
require.NoError(t, err)
// always append the multiplexed option for having the output
// in a readable format
tt.opts = append(tt.opts, tcexec.Multiplexed())
code, reader, err := ctr.Exec(ctx, tt.cmds, tt.opts...)
require.NoError(t, err)
require.Zero(t, code)
require.NotNil(t, reader)
b, err := io.ReadAll(reader)
require.NoError(t, err)
require.NotNil(t, b)
str := string(b)
require.Contains(t, str, tt.want)
})
}
}
func TestExecWithMultiplexedResponse(t *testing.T) {
ctx := context.Background()
req := ContainerRequest{
Image: nginxAlpineImage,
}
ctr, err := GenericContainer(ctx, GenericContainerRequest{
ContainerRequest: req,
Started: true,
})
CleanupContainer(t, ctr)
require.NoError(t, err)
code, reader, err := ctr.Exec(ctx, []string{"sh", "-c", "echo stdout; echo stderr >&2"}, tcexec.Multiplexed())
require.NoError(t, err)
require.Zero(t, code)
require.NotNil(t, reader)
b, err := io.ReadAll(reader)
require.NoError(t, err)
require.NotNil(t, b)
str := string(b)
require.Contains(t, str, "stdout")
require.Contains(t, str, "stderr")
}
func TestExecWithNonMultiplexedResponse(t *testing.T) {
ctx := context.Background()
req := ContainerRequest{
Image: nginxAlpineImage,
}
ctr, err := GenericContainer(ctx, GenericContainerRequest{
ContainerRequest: req,
Started: true,
})
CleanupContainer(t, ctr)
require.NoError(t, err)
code, reader, err := ctr.Exec(ctx, []string{"sh", "-c", "echo stdout; echo stderr >&2"})
require.NoError(t, err)
require.Zero(t, code)
require.NotNil(t, reader)
var stdout bytes.Buffer
var stderr bytes.Buffer
written, err := stdcopy.StdCopy(&stdout, &stderr, reader)
require.NoError(t, err)
require.NotZero(t, written)
require.NotNil(t, stdout)
require.NotNil(t, stderr)
require.Equal(t, "stdout\n", stdout.String())
require.Equal(t, "stderr\n", stderr.String())
}