1 files changed, 111 insertions, 0 deletions
diff --git a/cache/filecache/filecache_pruner_test.go b/cache/filecache/filecache_pruner_test.go
new file mode 100644
index 000000000..48bce723e
--- /dev/null
+++ b/cache/filecache/filecache_pruner_test.go
@@ -0,0 +1,111 @@
+// Copyright 2018 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package filecache
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/spf13/afero"
+
+	qt "github.com/frankban/quicktest"
+)
+
+func TestPrune(t *testing.T) {
+	t.Parallel()
+
+	c := qt.New(t)
+
+	configStr := `
+resourceDir = "myresources"
+contentDir = "content"
+dataDir = "data"
+i18nDir = "i18n"
+layoutDir = "layouts"
+assetDir = "assets"
+archeTypedir = "archetypes"
+
+[caches]
+[caches.getjson]
+maxAge = "200ms"
+dir = "/cache/c"
+[caches.getcsv]
+maxAge = "200ms"
+dir = "/cache/d"
+[caches.assets]
+maxAge = "200ms"
+dir = ":resourceDir/_gen"
+[caches.images]
+maxAge = "200ms"
+dir = ":resourceDir/_gen"
+`
+
+	for _, name := range []string{cacheKeyGetCSV, cacheKeyGetJSON, cacheKeyAssets, cacheKeyImages} {
+		msg := qt.Commentf("cache: %s", name)
+		p := newPathsSpec(t, afero.NewMemMapFs(), configStr)
+		caches, err := NewCaches(p)
+		c.Assert(err, qt.IsNil)
+		cache := caches[name]
+		for i := 0; i < 10; i++ {
+			id := fmt.Sprintf("i%d", i)
+			cache.GetOrCreateBytes(id, func() ([]byte, error) {
+				return []byte("abc"), nil
+			})
+			if i == 4 {
+				// This will expire the first 5
+				time.Sleep(201 * time.Millisecond)
+			}
+		}
+
+		count, err := caches.Prune()
+		c.Assert(err, qt.IsNil)
+		c.Assert(count, qt.Equals, 5, msg)
+
+		for i := 0; i < 10; i++ {
+			id := fmt.Sprintf("i%d", i)
+			v := cache.getString(id)
+			if i < 5 {
+				c.Assert(v, qt.Equals, "")
+			} else {
+				c.Assert(v, qt.Equals, "abc")
+			}
+		}
+
+		caches, err = NewCaches(p)
+		c.Assert(err, qt.IsNil)
+		cache = caches[name]
+		// Touch one and then prune.
+		cache.GetOrCreateBytes("i5", func() ([]byte, error) {
+			return []byte("abc"), nil
+		})
+
+		count, err = caches.Prune()
+		c.Assert(err, qt.IsNil)
+		c.Assert(count, qt.Equals, 4)
+
+		// Now only the i5 should be left.
+		for i := 0; i < 10; i++ {
+			id := fmt.Sprintf("i%d", i)
+			v := cache.getString(id)
+			if i != 5 {
+				c.Assert(v, qt.Equals, "")
+			} else {
+				c.Assert(v, qt.Equals, "abc")
+			}
+		}
+
+	}
+
+}