Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/src/embed/internal/embedtest/embed_test.go b/src/embed/internal/embedtest/embed_test.go
new file mode 100644
index 0000000..a6e673a
--- /dev/null
+++ b/src/embed/internal/embedtest/embed_test.go
@@ -0,0 +1,250 @@
+// 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"
+	"io"
+	"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)
+	}
+}
+
+// Tests for issue 49514.
+var _ = '"'
+var _ = '\''
+var _ = '🦆'
+
+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")
+}
+
+var (
+	//go:embed testdata
+	testHiddenDir embed.FS
+
+	//go:embed testdata/*
+	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 any) {
+		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)
+}
+
+func TestOffset(t *testing.T) {
+	file, err := testDirAll.Open("testdata/hello.txt")
+	if err != nil {
+		t.Fatal("Open:", err)
+	}
+
+	want := "hello, world\n"
+
+	// Read the entire file.
+	got := make([]byte, len(want))
+	n, err := file.Read(got)
+	if err != nil {
+		t.Fatal("Read:", err)
+	}
+	if n != len(want) {
+		t.Fatal("Read:", n)
+	}
+	if string(got) != want {
+		t.Fatalf("Read: %q", got)
+	}
+
+	// Try to read one byte; confirm we're at the EOF.
+	var buf [1]byte
+	n, err = file.Read(buf[:])
+	if err != io.EOF {
+		t.Fatal("Read:", err)
+	}
+	if n != 0 {
+		t.Fatal("Read:", n)
+	}
+
+	// Use seek to get the offset at the EOF.
+	seeker := file.(io.Seeker)
+	off, err := seeker.Seek(0, io.SeekCurrent)
+	if err != nil {
+		t.Fatal("Seek:", err)
+	}
+	if off != int64(len(want)) {
+		t.Fatal("Seek:", off)
+	}
+
+	// Use ReadAt to read the entire file, ignoring the offset.
+	at := file.(io.ReaderAt)
+	got = make([]byte, len(want))
+	n, err = at.ReadAt(got, 0)
+	if err != nil {
+		t.Fatal("ReadAt:", err)
+	}
+	if n != len(want) {
+		t.Fatalf("ReadAt: got %d bytes, want %d bytes", n, len(want))
+	}
+	if string(got) != want {
+		t.Fatalf("ReadAt: got %q, want %q", got, want)
+	}
+
+	// Use ReadAt with non-zero offset.
+	off = int64(7)
+	want = want[off:]
+	got = make([]byte, len(want))
+	n, err = at.ReadAt(got, off)
+	if err != nil {
+		t.Fatal("ReadAt:", err)
+	}
+	if n != len(want) {
+		t.Fatalf("ReadAt: got %d bytes, want %d bytes", n, len(want))
+	}
+	if string(got) != want {
+		t.Fatalf("ReadAt: got %q, want %q", got, want)
+	}
+}