36 lines
949 B
Go
36 lines
949 B
Go
// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package fs_test
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import (
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"fmt"
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. "io/fs"
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"testing"
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)
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type statOnly struct{ StatFS }
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func (statOnly) Open(name string) (File, error) { return nil, ErrNotExist }
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func TestStat(t *testing.T) {
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check := func(desc string, info FileInfo, err error) {
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t.Helper()
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if err != nil || info == nil || info.Mode() != 0456 {
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infoStr := "<nil>"
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if info != nil {
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infoStr = fmt.Sprintf("FileInfo(Mode: %#o)", info.Mode())
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}
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t.Fatalf("Stat(%s) = %v, %v, want Mode:0456, nil", desc, infoStr, err)
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}
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}
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// Test that Stat uses the method when present.
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info, err := Stat(statOnly{testFsys}, "hello.txt")
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check("statOnly", info, err)
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// Test that Stat uses Open when the method is not present.
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info, err = Stat(openOnly{testFsys}, "hello.txt")
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check("openOnly", info, err)
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}
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