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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package embedtest
import (
"embed"
"reflect"
"testing"
"testing/fstest"
)
//go:embed testdata/h*.txt
//go:embed c*.txt testdata/g*.txt
var global embed.FS
//go:embed c*txt
var concurrency string
//go:embed testdata/g*.txt
var glass []byte
func testFiles(t *testing.T, f embed.FS, name, data string) {
t.Helper()
d, err := f.ReadFile(name)
if err != nil {
t.Error(err)
return
}
if string(d) != data {
t.Errorf("read %v = %q, want %q", name, d, data)
}
}
func testString(t *testing.T, s, name, data string) {
t.Helper()
if s != data {
t.Errorf("%v = %q, want %q", name, s, data)
}
}
func testDir(t *testing.T, f embed.FS, name string, expect ...string) {
t.Helper()
dirs, err := f.ReadDir(name)
if err != nil {
t.Error(err)
return
}
var names []string
for _, d := range dirs {
name := d.Name()
if d.IsDir() {
name += "/"
}
names = append(names, name)
}
if !reflect.DeepEqual(names, expect) {
t.Errorf("readdir %v = %v, want %v", name, names, expect)
}
}
func TestGlobal(t *testing.T) {
testFiles(t, global, "concurrency.txt", "Concurrency is not parallelism.\n")
testFiles(t, global, "testdata/hello.txt", "hello, world\n")
testFiles(t, global, "testdata/glass.txt", "I can eat glass and it doesn't hurt me.\n")
if err := fstest.TestFS(global, "concurrency.txt", "testdata/hello.txt"); err != nil {
t.Fatal(err)
}
testString(t, concurrency, "concurrency", "Concurrency is not parallelism.\n")
testString(t, string(glass), "glass", "I can eat glass and it doesn't hurt me.\n")
}
//go:embed testdata
var testDirAll embed.FS
func TestDir(t *testing.T) {
all := testDirAll
testFiles(t, all, "testdata/hello.txt", "hello, world\n")
testFiles(t, all, "testdata/i/i18n.txt", "internationalization\n")
testFiles(t, all, "testdata/i/j/k/k8s.txt", "kubernetes\n")
testFiles(t, all, "testdata/ken.txt", "If a program is too slow, it must have a loop.\n")
testDir(t, all, ".", "testdata/")
testDir(t, all, "testdata/i", "i18n.txt", "j/")
testDir(t, all, "testdata/i/j", "k/")
testDir(t, all, "testdata/i/j/k", "k8s.txt")
}
//go:embed testdata
var testHiddenDir embed.FS
//go:embed testdata/*
var testHiddenStar embed.FS
func TestHidden(t *testing.T) {
dir := testHiddenDir
star := testHiddenStar
t.Logf("//go:embed testdata")
testDir(t, dir, "testdata",
"-not-hidden/", "ascii.txt", "glass.txt", "hello.txt", "i/", "ken.txt")
t.Logf("//go:embed testdata/*")
testDir(t, star, "testdata",
"-not-hidden/", ".hidden/", "_hidden/", "ascii.txt", "glass.txt", "hello.txt", "i/", "ken.txt")
testDir(t, star, "testdata/.hidden",
"fortune.txt", "more/") // but not .more or _more
}
func TestUninitialized(t *testing.T) {
var uninitialized embed.FS
testDir(t, uninitialized, ".")
f, err := uninitialized.Open(".")
if err != nil {
t.Fatal(err)
}
defer f.Close()
fi, err := f.Stat()
if err != nil {
t.Fatal(err)
}
if !fi.IsDir() {
t.Errorf("in uninitialized embed.FS, . is not a directory")
}
}
var (
//go:embed "testdata/hello.txt"
helloT []T
//go:embed "testdata/hello.txt"
helloUint8 []uint8
//go:embed "testdata/hello.txt"
helloEUint8 []EmbedUint8
//go:embed "testdata/hello.txt"
helloBytes EmbedBytes
//go:embed "testdata/hello.txt"
helloString EmbedString
)
type T byte
type EmbedUint8 uint8
type EmbedBytes []byte
type EmbedString string
// golang.org/issue/47735
func TestAliases(t *testing.T) {
all := testDirAll
want, e := all.ReadFile("testdata/hello.txt")
if e != nil {
t.Fatal("ReadFile:", e)
}
check := func(g interface{}) {
got := reflect.ValueOf(g)
for i := 0; i < got.Len(); i++ {
if byte(got.Index(i).Uint()) != want[i] {
t.Fatalf("got %v want %v", got.Bytes(), want)
}
}
}
check(helloT)
check(helloUint8)
check(helloEUint8)
check(helloBytes)
check(helloString)
}
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