91 lines
2.6 KiB
Go
91 lines
2.6 KiB
Go
package filecount
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestMTime(t *testing.T) {
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//this is the time our foo file should have
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mtime := time.Date(2015, time.December, 14, 18, 25, 5, 0, time.UTC)
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fs := getTestFileSystem()
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fileInfo, err := fs.Stat("/testdata/foo")
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require.Nil(t, err)
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require.Equal(t, mtime, fileInfo.ModTime())
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}
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func TestSize(t *testing.T) {
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//this is the time our foo file should have
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size := int64(4096)
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fs := getTestFileSystem()
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fileInfo, err := fs.Stat("/testdata")
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require.Nil(t, err)
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require.Equal(t, size, fileInfo.Size())
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}
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func TestIsDir(t *testing.T) {
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//this is the time our foo file should have
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dir := true
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fs := getTestFileSystem()
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fileInfo, err := fs.Stat("/testdata")
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require.Nil(t, err)
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require.Equal(t, dir, fileInfo.IsDir())
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}
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func TestRealFS(t *testing.T) {
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//test that the default (non-test) empty FS causes expected behaviour
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var fs fileSystem = osFS{}
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//the following file exists on disk - and not in our fake fs
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fileInfo, err := fs.Stat(getTestdataDir() + "/qux")
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require.Nil(t, err)
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require.Equal(t, false, fileInfo.IsDir())
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require.Equal(t, int64(446), fileInfo.Size())
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// now swap out real, for fake filesystem
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fs = getTestFileSystem()
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// now, the same test as above will return an error as the file doesn't exist in our fake fs
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expectedError := "Stat " + getTestdataDir() + "/qux: No such file or directory"
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fileInfo, err = fs.Stat(getTestdataDir() + "/qux")
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require.Equal(t, expectedError, err.Error())
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// and verify that what we DO expect to find, we do
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fileInfo, err = fs.Stat("/testdata/foo")
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require.Nil(t, err)
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}
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func getTestFileSystem() fakeFileSystem {
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/*
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create our desired "filesystem" object, complete with an internal map allowing our funcs to return meta data as requested
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type FileInfo interface {
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Name() string // base name of the file
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Size() int64 // length in bytes of file
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Mode() FileMode // file mode bits
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ModTime() time.Time // modification time
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IsDir() bool // returns bool indicating if a Dir or not
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Sys() interface{} // underlying data source. always nil (in this case)
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}
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*/
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mtime := time.Date(2015, time.December, 14, 18, 25, 5, 0, time.UTC)
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// set file permissions
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var fmask uint32 = 0666
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var dmask uint32 = 0666
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// set directory bit
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dmask |= (1 << uint(32-1))
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fileList := map[string]fakeFileInfo{
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"/testdata": {name: "testdata", size: int64(4096), filemode: uint32(dmask), modtime: mtime, isdir: true},
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"/testdata/foo": {name: "foo", filemode: uint32(fmask), modtime: mtime},
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}
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fs := fakeFileSystem{files: fileList}
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return fs
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}
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