Add test cases for ChunkCache

src/cache_test.go

+package fzf
+
+import "testing"
+
+func TestChunkCache(t *testing.T) {
+	cache := NewChunkCache()
+	chunk2 := make(Chunk, CHUNK_SIZE)
+	chunk1p := &Chunk{}
+	chunk2p := &chunk2
+	items1 := []*Item{&Item{}}
+	items2 := []*Item{&Item{}, &Item{}}
+	cache.Add(chunk1p, "foo", items1)
+	cache.Add(chunk2p, "foo", items1)
+	cache.Add(chunk2p, "bar", items2)
+
+	{ // chunk1 is not full
+		cached, found := cache.Find(chunk1p, "foo")
+		if found {
+			t.Error("Cached disabled for non-empty chunks", found, cached)
+		}
+	}
+	{
+		cached, found := cache.Find(chunk2p, "foo")
+		if !found || len(cached) != 1 {
+			t.Error("Expected 1 item cached", found, cached)
+		}
+	}
+	{
+		cached, found := cache.Find(chunk2p, "bar")
+		if !found || len(cached) != 2 {
+			t.Error("Expected 2 items cached", found, cached)
+		}
+	}
+	{
+		cached, found := cache.Find(chunk1p, "foobar")
+		if found {
+			t.Error("Expected 0 item cached", found, cached)
+		}
+	}
+}