}
			}

			if err != v.err {
				t.Fatalf("unexpected error: got %v, want %v", err, v.err)
			}
			f.Close()
		})
	}
}

func TestPartialRead(t *testing.T) {
	type testCase struct {
		cnt    int    // Number of bytes to read
		output string // Expected value of string read
	}
	vectors := []struct {
		file  string
		cases []testCase
	}{{