5e0a04e4da
- Cache.Pull(ctx, key) ([]byte, bool, error), Laravel's Cache::pull
- Redis driver runs GETDEL (Redis 6.2+); memory driver uses otter Compute
with InvalidateOp under the per-key lock; expired keys report not found
- TestPullSmoke over the memory driver and miniredis, ExampleCache_Pull
- README and docs/services/caching.md ("One-time values")
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package cooler
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import (
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"testing"
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"time"
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)
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// TestPullSmoke takes a value exactly once through Pull on both drivers, and
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// reports an expired value as not found.
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func TestPullSmoke(t *testing.T) {
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run := func(t *testing.T, c Cache, advance func(time.Duration)) {
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t.Helper()
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ctx := t.Context()
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if err := c.Set(ctx, "code", []byte("v"), 0); err != nil {
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t.Fatal(err)
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}
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if v, ok, err := c.Pull(ctx, "code"); err != nil || !ok || string(v) != "v" {
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t.Fatalf("first Pull = %q %v %v, want \"v\" true nil", v, ok, err)
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}
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if v, ok, err := c.Pull(ctx, "code"); err != nil || ok || v != nil {
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t.Fatalf("second Pull = %q %v %v, want nil false nil", v, ok, err)
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}
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if v, ok, err := c.Get(ctx, "code"); err != nil || ok || v != nil {
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t.Fatalf("Get after Pull = %q %v %v, want nil false nil", v, ok, err)
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}
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if err := c.Set(ctx, "short", []byte("x"), 50*time.Millisecond); err != nil {
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t.Fatal(err)
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}
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advance(100 * time.Millisecond)
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if v, ok, err := c.Pull(ctx, "short"); err != nil || ok || v != nil {
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t.Fatalf("Pull of an expired key = %q %v %v, want nil false nil", v, ok, err)
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}
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}
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t.Run("memory", func(t *testing.T) {
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c, err := NewMemoryCache("acme:", 100)
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if err != nil {
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t.Fatal(err)
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}
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run(t, c, func(time.Duration) { time.Sleep(80 * time.Millisecond) })
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})
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t.Run("redis", func(t *testing.T) {
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mr, client := miniClient(t)
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run(t, NewRedisCache(client, "acme:"), mr.FastForward)
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})
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}
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