Files
玉澜 0fbdfe0130 test(seam): make testseam the only seam-swap form and legislate it
- Add testseam.Protect for save-and-restore seams with no up-front stub
  value (e.g. os.Args mutated by the code under test).
- Migrate all 35 remaining manual prev/assign/t.Cleanup-restore trios to
  testseam.Swap/Protect across app, auth, cli, event, helpers, output,
  pipeline, and shortcut tests; restores can no longer be forgotten.
- check-schema-catalog.sh: fail closed when a manual seam restore
  reappears in any *_test.go (internal/testseam exempt).

Seam injection is now a mechanism, not a convention.
2026-08-03 20:00:47 +08:00

59 lines
1.7 KiB
Go

// Copyright 2026 Alibaba Group
// 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 testseam
import "testing"
func TestCrossPlatformCoverageSwapSetsAndRestores(t *testing.T) {
value := 1
t.Run("child", func(t *testing.T) {
Swap(t, &value, 42)
if value != 42 {
t.Fatalf("Swap did not install next value: %d", value)
}
Swap(t, &value, 43)
if value != 43 {
t.Fatalf("second Swap did not install next value: %d", value)
}
})
if value != 1 {
t.Fatalf("Swap did not restore previous value: %d", value)
}
}
func TestCrossPlatformCoverageSwapFunctionSeam(t *testing.T) {
called := false
fn := func() int { return 7 }
t.Run("child", func(t *testing.T) {
Swap(t, &fn, func() int { called = true; return 9 })
if got := fn(); got != 9 || !called {
t.Fatalf("swapped function not invoked: got=%d called=%v", got, called)
}
})
if got := fn(); got != 7 {
t.Fatalf("function seam not restored: %d", got)
}
}
func TestCrossPlatformCoverageProtectRestores(t *testing.T) {
value := 5
t.Run("child", func(t *testing.T) {
Protect(t, &value)
value = 99 // code under test mutates the seam
})
if value != 5 {
t.Fatalf("Protect did not restore mutated value: %d", value)
}
}