package command

import (
	"os"
	"strings"
	"testing"

	"github.com/hashicorp/terraform/config"
	"github.com/hashicorp/terraform/terraform"
	"github.com/mitchellh/cli"
)

func TestGraph(t *testing.T) {
	ui := new(cli.MockUi)
	c := &GraphCommand{
		ContextOpts: testCtxConfig(testProvider()),
		Ui:          ui,
	}

	args := []string{
		testFixturePath("graph"),
	}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
	}

	output := ui.OutputWriter.String()
	if !strings.Contains(output, "digraph {") {
		t.Fatalf("doesn't look like digraph: %s", output)
	}
}

func TestGraph_multipleArgs(t *testing.T) {
	ui := new(cli.MockUi)
	c := &ApplyCommand{
		ContextOpts: testCtxConfig(testProvider()),
		Ui:          ui,
	}

	args := []string{
		"bad",
		"bad",
	}
	if code := c.Run(args); code != 1 {
		t.Fatalf("bad: \n%s", ui.OutputWriter.String())
	}
}

func TestGraph_noArgs(t *testing.T) {
	cwd, err := os.Getwd()
	if err != nil {
		t.Fatalf("err: %s", err)
	}
	if err := os.Chdir(testFixturePath("graph")); err != nil {
		t.Fatalf("err: %s", err)
	}
	defer os.Chdir(cwd)

	ui := new(cli.MockUi)
	c := &GraphCommand{
		ContextOpts: testCtxConfig(testProvider()),
		Ui:          ui,
	}

	args := []string{}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
	}

	output := ui.OutputWriter.String()
	if !strings.Contains(output, "digraph {") {
		t.Fatalf("doesn't look like digraph: %s", output)
	}
}

func TestGraph_plan(t *testing.T) {
	planPath := testPlanFile(t, &terraform.Plan{
		Config: new(config.Config),
	})

	ui := new(cli.MockUi)
	c := &GraphCommand{
		ContextOpts: testCtxConfig(testProvider()),
		Ui:          ui,
	}

	args := []string{
		planPath,
	}
	if code := c.Run(args); code != 0 {
		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
	}

	output := ui.OutputWriter.String()
	if !strings.Contains(output, "digraph {") {
		t.Fatalf("doesn't look like digraph: %s", output)
	}
}