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blacktop
e209828c31
Refactor diff jobs into task-owned renderers with persistent cache support, root-confined walkers, and quieter Mach-O/Firmware output.
45 lines
1.5 KiB
Go
45 lines
1.5 KiB
Go
package diff
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import (
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"os"
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"testing"
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"github.com/blacktop/go-macho"
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)
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// TestKernelKeySegmentsEqualMatchesRebuiltKernel exercises the kernelcache
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// short-circuit against two real extracted kernelcaches. The files are
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// expected at /tmp/kc-diff/{23F77,23F81}/<build>__iPhone18,1/kernelcache...
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// (produced by `ipsw extract --kernel`). When the fixtures are absent the
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// test is skipped — it's a manual regression check, not part of CI.
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func TestKernelKeySegmentsEqualMatchesRebuiltKernel(t *testing.T) {
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oldPath := "/tmp/kc-diff/23F77/23F77__iPhone18,1/kernelcache.release.iPhone18,1"
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newPath := "/tmp/kc-diff/23F81/23F81__iPhone18,1/kernelcache.release.iPhone18,1"
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for _, p := range []string{oldPath, newPath} {
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if _, err := os.Stat(p); err != nil {
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t.Skipf("fixture missing (%s); extract via `ipsw extract --kernel`", p)
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}
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}
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oldKC, err := macho.Open(oldPath)
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if err != nil {
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t.Fatalf("macho.Open(old) = %v", err)
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}
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defer oldKC.Close()
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newKC, err := macho.Open(newPath)
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if err != nil {
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t.Fatalf("macho.Open(new) = %v", err)
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}
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defer newKC.Close()
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// File bytes differ (UUID + build-root strings + plist digests), but the
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// kernel code (__TEXT_EXEC) and constant data (__DATA_CONST, where the
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// sandbox profile collection lives) should match for this 26.5 → 26.5.1
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// rebuild-only release.
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if !kernelKeySegmentsEqual(oldKC, newKC) {
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t.Fatal("kernelKeySegmentsEqual(23F77, 23F81) = false; expected true (kernel is functionally identical, only wrapper metadata changed)")
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}
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}
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