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embed/internal/embedtest: test openFile.ReadAt with non-zero offset

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Also fix log messages to report expected values in the standard "got foo,
want bar" format.

Change-Id: I6a9fd4abe1f86c2651c72c2bf7ac4588028e5923
Reviewed-on: https://go-review.googlesource.com/c/go/+/484715
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Tobias Klauser 2023-04-13 17:57:42 +02:00 committed by Gopher Robot
parent 750e91152b
commit 5da1f41513
1 changed files with 18 additions and 3 deletions
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21
src/embed/internal/embedtest/embed_test.go
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@ -184,7 +184,7 @@ func TestOffset(t *testing.T) {
t.Fatal("Open:", err)
}
const want = "hello, world\n"
want := "hello, world\n"
// Read the entire file.
got := make([]byte, len(want))
@ -227,9 +227,24 @@ func TestOffset(t *testing.T) {
t.Fatal("ReadAt:", err)
}
if n != len(want) {
t.Fatal("ReadAt:", n)
t.Fatalf("ReadAt: got %d bytes, want %d bytes", n, len(want))
}
if string(got) != want {
t.Fatalf("ReadAt: %q", got)
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)
}
}