77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"io"
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"log"
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"net/http"
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"time"
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. "gopkg.in/check.v1"
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)
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type AlbumCoverCacheSuite struct {
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cache *AlbumCoverCache
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}
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var _ = Suite(&AlbumCoverCacheSuite{})
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// a simple HTTPGetter that will never GET anything
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type errorGetter struct{}
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func (g *errorGetter) Get(URL string) (*http.Response, error) {
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return nil, fmt.Errorf("I will always have an error")
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}
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func (s *AlbumCoverCacheSuite) SetUpSuite(c *C) {
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s.cache = NewAlbumCoverCache(c.MkDir(), 10, 10*time.Second)
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s.cache.getter = testGetter
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for _, a := range albumsDataTest {
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s.cache.RegisterCover(a.ID, a.CoverURL)
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}
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}
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func (s *AlbumCoverCacheSuite) TestCanFetchCache(c *C) {
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var resData = []bytes.Buffer{}
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start := time.Now()
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for _, a := range albumsDataTest {
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cover, _, err := s.cache.GetCover(a.ID)
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var buf bytes.Buffer
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if c.Check(err, IsNil) == true {
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_, err := io.Copy(&buf, cover)
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c.Check(err, IsNil)
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c.Check(cover.Close(), IsNil)
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}
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resData = append(resData, buf)
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}
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s.cache.getter = &errorGetter{}
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// now we check that we get it again, but from the disk, not
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// hitting the web
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for i, a := range albumsDataTest {
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cover, _, err := s.cache.GetCover(a.ID)
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var buf bytes.Buffer
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if c.Check(err, IsNil) == true {
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_, err := io.Copy(&buf, cover)
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if c.Check(err, IsNil) == true {
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c.Check(buf.Bytes(), DeepEquals, resData[i].Bytes())
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}
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c.Check(cover.Close(), IsNil)
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}
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}
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// now if we it the TTL, we will reftech and get error
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s.cache.TTL = 0
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for _, a := range albumsDataTest {
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cover, _, err := s.cache.GetCover(a.ID)
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c.Check(cover, IsNil)
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c.Check(err, ErrorMatches, "I will always have an error")
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}
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log.Printf("%s: %s", c.TestName(), time.Since(start))
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}
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