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-rw-r--r--test/arenas/smoke.go65
1 files changed, 65 insertions, 0 deletions
diff --git a/test/arenas/smoke.go b/test/arenas/smoke.go
new file mode 100644
index 0000000..56dad53
--- /dev/null
+++ b/test/arenas/smoke.go
@@ -0,0 +1,65 @@
+// build -goexperiment arenas
+
+// Copyright 2023 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+ "arena"
+ "log"
+ "reflect"
+)
+
+func main() {
+ a := arena.NewArena()
+ defer a.Free()
+
+ const iValue = 10
+
+ i := arena.New[int](a)
+ *i = iValue
+
+ if *i != iValue {
+ // This test doesn't reasonably expect this to fail. It's more likely
+ // that *i crashes for some reason. Still, why not check it.
+ log.Fatalf("bad i value: got %d, want %d", *i, iValue)
+ }
+
+ const wantLen = 125
+ const wantCap = 1912
+
+ sl := arena.MakeSlice[*int](a, wantLen, wantCap)
+ if len(sl) != wantLen {
+ log.Fatalf("bad arena slice length: got %d, want %d", len(sl), wantLen)
+ }
+ if cap(sl) != wantCap {
+ log.Fatalf("bad arena slice capacity: got %d, want %d", cap(sl), wantCap)
+ }
+ sl = sl[:cap(sl)]
+ for j := range sl {
+ sl[j] = i
+ }
+ for j := range sl {
+ if *sl[j] != iValue {
+ // This test doesn't reasonably expect this to fail. It's more likely
+ // that sl[j] crashes for some reason. Still, why not check it.
+ log.Fatalf("bad sl[j] value: got %d, want %d", *sl[j], iValue)
+ }
+ }
+
+ t := reflect.TypeOf(int(0))
+ v := reflect.ArenaNew(a, t)
+ if want := reflect.PointerTo(t); v.Type() != want {
+ log.Fatalf("unexpected type for arena-allocated value: got %s, want %s", v.Type(), want)
+ }
+ i2 := v.Interface().(*int)
+ *i2 = iValue
+
+ if *i2 != iValue {
+ // This test doesn't reasonably expect this to fail. It's more likely
+ // that *i crashes for some reason. Still, why not check it.
+ log.Fatalf("bad i2 value: got %d, want %d", *i2, iValue)
+ }
+}