diff --git a/src/common/tools/crawl.ts b/src/common/tools/crawl.ts
index cb1e5f6fc737..9e060f485903 100644
--- a/src/common/tools/crawl.ts
+++ b/src/common/tools/crawl.ts
@@ -83,6 +83,8 @@ export async function crawl(suiteDir: string, validate: boolean): Promise<TestSu
         assert(mod.description !== undefined, 'Test spec file missing description: ' + filename);
         assert(mod.g !== undefined, 'Test spec file missing TestGroup definition: ' + filename);
 
+        mod.g.validate();
+
         for (const { testPath } of mod.g.collectNonEmptyTests()) {
           const testQuery = new TestQueryMultiCase(suite, pathSegments, testPath, {}).toString();
           if (validateTimingsEntries) {
diff --git a/src/unittests/floating_point.spec.ts b/src/unittests/floating_point.spec.ts
index 7eae72447624..e8f8525d7f83 100644
--- a/src/unittests/floating_point.spec.ts
+++ b/src/unittests/floating_point.spec.ts
@@ -6437,14 +6437,6 @@ g.test('determinantInterval')
           ],
           expected: 0,
         },
-        {
-          input: [
-            [1, 2, 3],
-            [4, 5, 6],
-            [7, 8, 9],
-          ],
-          expected: 0,
-        },
         {
           input: [
             [4, 1, -1],
diff --git a/src/webgpu/api/operation/vertex_state/correctness.spec.ts b/src/webgpu/api/operation/vertex_state/correctness.spec.ts
index 4f49ff2ff71d..97594a3cef7c 100644
--- a/src/webgpu/api/operation/vertex_state/correctness.spec.ts
+++ b/src/webgpu/api/operation/vertex_state/correctness.spec.ts
@@ -746,18 +746,16 @@ g.test('non_zero_array_stride_and_attribute_offset')
           { mult: 1, add: 0 },
         ];
       })
-      .expand('offsetVariant', p => {
+      .expand('offsetVariant', function* (p) {
         const formatInfo = kVertexFormatInfo[p.format];
         const formatSize = formatInfo.byteSize;
-        return [
-          { mult: 0, add: 0 },
-          { mult: 0, add: formatSize },
-          { mult: 0, add: 4 },
-          { mult: 0.5, add: 0 },
-          { mult: 1, add: -formatSize * 2 },
-          { mult: 1, add: -formatSize - 4 },
-          { mult: 1, add: -formatSize },
-        ];
+        yield { mult: 0, add: 0 };
+        yield { mult: 0, add: 4 };
+        if (formatSize !== 4) yield { mult: 0, add: formatSize };
+        yield { mult: 0.5, add: 0 };
+        yield { mult: 1, add: -formatSize * 2 };
+        if (formatSize !== 4) yield { mult: 1, add: -formatSize - 4 };
+        yield { mult: 1, add: -formatSize };
       })
   )
   .fn(t => {