package wand

import (
	"bytes"
	"io"
	"testing"
	"time"
)

func TestOutput(t *testing.T) {
	f0 := func() any { return nil }
	f1 := func() int { return 42 }
	f2 := func() time.Duration { return 9 * time.Second }
	f3 := func() *int { i := 42; return &i }
	f4 := func() chan int { return make(chan int) }
	f5 := func() io.Reader { return bytes.NewBufferString("foo") }
	f6 := func() ([]string, int, io.Reader) {
		return []string{"foo", "bar", "baz"}, 42, bytes.NewBufferString("foo")
	}

	t.Run("nil", testExec(testCase{impl: f0, command: "foo"}, "", ""))
	t.Run("simple", testExec(testCase{impl: f1, command: "foo"}, "", "42"))
	t.Run("stringer", testExec(testCase{impl: f2, command: "foo"}, "", "9s"))
	t.Run("pointer", testExec(testCase{impl: f3, command: "foo"}, "", "42"))
	t.Run("complex", testExec(testCase{impl: f4, command: "foo"}, "", "chan int"))
	t.Run("reader", testExec(testCase{impl: f5, command: "foo"}, "", "foo"))
	t.Run("mixed", testExec(testCase{impl: f6, command: "foo"}, "", "foo\nbar\nbaz\n42\nfoo"))
}