Guard good arc staging paths

wasm-port/tests/browser/interp_smoke.html

@@ -7089,8 +7089,10 @@
       if (goodArcFixtures.length !== 6 || new Set(goodArcFixtures.map((fixture) => fixture.file)).size !== goodArcFixtures.length) {
         throw new Error("browser_interp_good_fixture_coverage: list drift");
       }
+      const goodArcStagedNgcFiles = [];
       for (const goodArcFixture of goodArcFixtures) {
         const goodArcPath = await writeInterpRegressionFile(interp, "good", goodArcFixture.file);
+        goodArcStagedNgcFiles.push(goodArcPath);
         verifyExpectedOutput(
           `browser_interp_good_arc_${goodArcFixture.name}`,
           interp.runFile(goodArcPath),
@@ -7106,6 +7108,10 @@
           ].join("\n"),
         );
       }
+      const goodArcStagedRelativeNgcFiles = goodArcStagedNgcFiles.map((path) => path.replace("/work/browser-interp/good/", ""));
+      if (goodArcStagedRelativeNgcFiles.join(",") !== goodArcFixtures.map((fixture) => fixture.file).join(",")) {
+        throw new Error("browser_interp_good_staging_manifest: list drift");
+      }
 
       const g6164Path = await writeInterpRegressionFile(interp, "g6164", "test.ngc");
       const g6164NgcFiles = [

wasm-port/tests/wasm/node/verify_interp_wasm.mjs

@@ -2029,8 +2029,10 @@ assert.deepEqual(
   interpRegressionNgcFiles("good"),
   "interp good fixture coverage drift",
 );
+const goodArcStagedNgcFiles = [];
 for (const goodArcFixture of goodArcFixtures) {
   const goodArcPath = writeInterpRegressionFile("good", goodArcFixture.file);
+  goodArcStagedNgcFiles.push(goodArcPath);
   verifyExpectedOutput(
     `interp_good_arc_${goodArcFixture.name}_wasm`,
     interp.runFile(goodArcPath),
@@ -2046,6 +2048,11 @@ for (const goodArcFixture of goodArcFixtures) {
     ].join("\n"),
   );
 }
+assert.deepEqual(
+  goodArcStagedNgcFiles,
+  goodArcFixtures.map((fixture) => `/work/interp/good/${fixture.file}`),
+  "interp good staging manifest drift",
+);
 
 const g6164Path = writeInterpRegressionFile("g6164", "test.ngc");
 const g6164NgcFiles = [