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moby--moby/engine/engine_test.go

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package engine
import (
"bytes"
"strings"
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"testing"
)
func TestRegister(t *testing.T) {
if err := Register("dummy1", nil); err != nil {
t.Fatal(err)
}
if err := Register("dummy1", nil); err == nil {
t.Fatalf("Expecting error, got none")
}
// Register is global so let's cleanup to avoid conflicts
defer unregister("dummy1")
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eng := New()
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//Should fail because global handlers are copied
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//at the engine creation
if err := eng.Register("dummy1", nil); err == nil {
t.Fatalf("Expecting error, got none")
}
if err := eng.Register("dummy2", nil); err != nil {
t.Fatal(err)
}
if err := eng.Register("dummy2", nil); err == nil {
t.Fatalf("Expecting error, got none")
}
defer unregister("dummy2")
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}
func TestJob(t *testing.T) {
eng := New()
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job1 := eng.Job("dummy1", "--level=awesome")
if job1.handler != nil {
t.Fatalf("job1.handler should be empty")
}
h := func(j *Job) Status {
j.Printf("%s\n", j.Name)
return 42
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}
eng.Register("dummy2", h)
defer unregister("dummy2")
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job2 := eng.Job("dummy2", "--level=awesome")
if job2.handler == nil {
t.Fatalf("job2.handler shouldn't be nil")
}
if job2.handler(job2) != 42 {
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t.Fatalf("handler dummy2 was not found in job2")
}
}
func TestEngineCommands(t *testing.T) {
eng := New()
handler := func(job *Job) Status { return StatusOK }
eng.Register("foo", handler)
eng.Register("bar", handler)
eng.Register("echo", handler)
eng.Register("die", handler)
var output bytes.Buffer
commands := eng.Job("commands")
commands.Stdout.Add(&output)
commands.Run()
expected := "bar\ncommands\ndie\necho\nfoo\n"
if result := output.String(); result != expected {
t.Fatalf("Unexpected output:\nExpected = %v\nResult = %v\n", expected, result)
}
}
func TestEngineString(t *testing.T) {
eng1 := New()
eng2 := New()
s1 := eng1.String()
s2 := eng2.String()
if eng1 == eng2 {
t.Fatalf("Different engines should have different names (%v == %v)", s1, s2)
}
}
func TestEngineLogf(t *testing.T) {
eng := New()
input := "Test log line"
if n, err := eng.Logf("%s\n", input); err != nil {
t.Fatal(err)
} else if n < len(input) {
t.Fatalf("Test: Logf() should print at least as much as the input\ninput=%d\nprinted=%d", len(input), n)
}
}
func TestParseJob(t *testing.T) {
eng := New()
// Verify that the resulting job calls to the right place
var called bool
eng.Register("echo", func(job *Job) Status {
called = true
return StatusOK
})
input := "echo DEBUG=1 hello world VERBOSITY=42"
job, err := eng.ParseJob(input)
if err != nil {
t.Fatal(err)
}
if job.Name != "echo" {
t.Fatalf("Invalid job name: %v", job.Name)
}
if strings.Join(job.Args, ":::") != "hello:::world" {
t.Fatalf("Invalid job args: %v", job.Args)
}
if job.Env().Get("DEBUG") != "1" {
t.Fatalf("Invalid job env: %v", job.Env)
}
if job.Env().Get("VERBOSITY") != "42" {
t.Fatalf("Invalid job env: %v", job.Env)
}
if len(job.Env().Map()) != 2 {
t.Fatalf("Invalid job env: %v", job.Env)
}
if err := job.Run(); err != nil {
t.Fatal(err)
}
if !called {
t.Fatalf("Job was not called")
}
}
func TestCatchallEmptyName(t *testing.T) {
eng := New()
var called bool
eng.RegisterCatchall(func(job *Job) Status {
called = true
return StatusOK
})
err := eng.Job("").Run()
if err == nil {
t.Fatalf("Engine.Job(\"\").Run() should return an error")
}
if called {
t.Fatalf("Engine.Job(\"\").Run() should return an error")
}
}