package nfs_test

import (
	"git.noahlan.cn/noahlan/ntool/nfs"
	"git.noahlan.cn/noahlan/ntool/ntest/assert"
	"strings"
	"testing"
)

func TestDiscardReader(t *testing.T) {
	sr := strings.NewReader("hello")
	bs, err := nfs.ReadOrErr(sr)
	assert.NoErr(t, err)
	assert.Eq(t, []byte("hello"), bs)

	sr = strings.NewReader("hello")
	assert.Eq(t, []byte("hello"), nfs.GetContents(sr))

	sr = strings.NewReader("hello")
	nfs.DiscardReader(sr)

	assert.Empty(t, nfs.ReadReader(sr))
	assert.Empty(t, nfs.ReadAll(sr))

}

func TestGetContents(t *testing.T) {
	fpath := "./testdata/get-contents.txt"
	assert.NoErr(t, nfs.RmFileIfExist(fpath))

	_, err := nfs.PutContents(fpath, "hello")
	assert.NoErr(t, err)

	assert.Nil(t, nfs.ReadExistFile("/path-not-exist"))
	assert.Eq(t, []byte("hello"), nfs.ReadExistFile(fpath))

	assert.Panics(t, func() {
		nfs.GetContents(45)
	})
	assert.Panics(t, func() {
		nfs.ReadFile("/path-not-exist")
	})
}