package engine

import (
	"testing"
)

func TestEnvLenZero(t *testing.T) {
	env := &Env{}
	if env.Len() != 0 {
		t.Fatalf("%d", env.Len())
	}
}

func TestEnvLenNotZero(t *testing.T) {
	env := &Env{}
	env.Set("foo", "bar")
	env.Set("ga", "bu")
	if env.Len() != 2 {
		t.Fatalf("%d", env.Len())
	}
}

func TestEnvLenDup(t *testing.T) {
	env := &Env{
		"foo=bar",
		"foo=baz",
		"a=b",
	}
	// len(env) != env.Len()
	if env.Len() != 2 {
		t.Fatalf("%d", env.Len())
	}
}

func TestNewJob(t *testing.T) {
	job := mkJob(t, "dummy", "--level=awesome")
	if job.Name != "dummy" {
		t.Fatalf("Wrong job name: %s", job.Name)
	}
	if len(job.Args) != 1 {
		t.Fatalf("Wrong number of job arguments: %d", len(job.Args))
	}
	if job.Args[0] != "--level=awesome" {
		t.Fatalf("Wrong job arguments: %s", job.Args[0])
	}
}

func TestSetenv(t *testing.T) {
	job := mkJob(t, "dummy")
	job.Setenv("foo", "bar")
	if val := job.Getenv("foo"); val != "bar" {
		t.Fatalf("Getenv returns incorrect value: %s", val)
	}

	job.Setenv("bar", "")
	if val := job.Getenv("bar"); val != "" {
		t.Fatalf("Getenv returns incorrect value: %s", val)
	}
	if val := job.Getenv("nonexistent"); val != "" {
		t.Fatalf("Getenv returns incorrect value: %s", val)
	}
}

func TestSetenvBool(t *testing.T) {
	job := mkJob(t, "dummy")
	job.SetenvBool("foo", true)
	if val := job.GetenvBool("foo"); !val {
		t.Fatalf("GetenvBool returns incorrect value: %t", val)
	}

	job.SetenvBool("bar", false)
	if val := job.GetenvBool("bar"); val {
		t.Fatalf("GetenvBool returns incorrect value: %t", val)
	}

	if val := job.GetenvBool("nonexistent"); val {
		t.Fatalf("GetenvBool returns incorrect value: %t", val)
	}
}

func TestSetenvInt(t *testing.T) {
	job := mkJob(t, "dummy")

	job.SetenvInt("foo", -42)
	if val := job.GetenvInt("foo"); val != -42 {
		t.Fatalf("GetenvInt returns incorrect value: %d", val)
	}

	job.SetenvInt("bar", 42)
	if val := job.GetenvInt("bar"); val != 42 {
		t.Fatalf("GetenvInt returns incorrect value: %d", val)
	}
	if val := job.GetenvInt("nonexistent"); val != 0 {
		t.Fatalf("GetenvInt returns incorrect value: %d", val)
	}
}

func TestSetenvList(t *testing.T) {
	job := mkJob(t, "dummy")

	job.SetenvList("foo", []string{"bar"})
	if val := job.GetenvList("foo"); len(val) != 1 || val[0] != "bar" {
		t.Fatalf("GetenvList returns incorrect value: %v", val)
	}

	job.SetenvList("bar", nil)
	if val := job.GetenvList("bar"); val != nil {
		t.Fatalf("GetenvList returns incorrect value: %v", val)
	}
	if val := job.GetenvList("nonexistent"); val != nil {
		t.Fatalf("GetenvList returns incorrect value: %v", val)
	}
}

func TestEnviron(t *testing.T) {
	job := mkJob(t, "dummy")
	job.Setenv("foo", "bar")
	val, exists := job.Environ()["foo"]
	if !exists {
		t.Fatalf("foo not found in the environ")
	}
	if val != "bar" {
		t.Fatalf("bar not found in the environ")
	}
}