33 lines
985 B
Go
33 lines
985 B
Go
package filecount
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import (
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"io"
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"os"
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)
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/*
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The code below is lifted from numerous articles and originates from Andrew Gerrand's 10 things you (probably) don't know about Go.
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It allows for mocking a filesystem; this allows for consistent testing of this code across platforms (directory sizes reported
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differently by different platforms, for example), while preserving the rest of the functionality as-is, without modification.
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*/
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type fileSystem interface {
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open(name string) (file, error)
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stat(name string) (os.FileInfo, error)
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lstat(name string) (os.FileInfo, error)
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}
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type file interface {
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io.Closer
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io.Reader
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io.ReaderAt
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io.Seeker
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Stat() (os.FileInfo, error)
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}
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// osFS implements fileSystem using the local disk
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type osFS struct{}
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func (osFS) open(name string) (file, error) { return os.Open(name) }
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func (osFS) stat(name string) (os.FileInfo, error) { return os.Stat(name) }
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func (osFS) lstat(name string) (os.FileInfo, error) { return os.Lstat(name) }
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