fix "TypeError: Converting circular structure to JSON" for failed tests

mui · Aug 23, 2022 · cd16a06 · cd16a06
1 parent f5abc74
commit cd16a06
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Showing 2 changed files with 23 additions and 2 deletions.
diff --git a/packages/grid/x-data-grid-pro/src/tests/rowPinning.DataGridPro.test.tsx b/packages/grid/x-data-grid-pro/src/tests/rowPinning.DataGridPro.test.tsx
@@ -773,7 +773,7 @@ describe('<DataGridPro /> - Row pinning', () => {
       <BaselineTestCase rowCount={2} colCount={1} rows={[]} getRowClassName={() => className} />,
     );
 
-    expect(getRowById(0)!.classList.contains(className)).to.equal(true);
-    expect(getRowById(1)!.classList.contains(className)).to.equal(true);
+    expect(getRowById(0)!).to.have.class(className);
+    expect(getRowById(1)!).to.have.class(className);
   });
 });
diff --git a/test/karma.tests.js b/test/karma.tests.js
@@ -8,6 +8,27 @@ import { unstable_resetCreateSelectorCache } from '@mui/x-data-grid/internals';
 const packagesContext = require.context('../packages', true, /\.test\.tsx$/);
 packagesContext.keys().forEach(packagesContext);
 
+// See https://github.com/mui/mui-x/pull/3607#discussion_r784785626
+const jsonStringify = JSON.stringify;
+JSON.stringify = (val) =>
+  jsonStringify(
+    val,
+    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Cyclic_object_value
+    () => {
+      const seen = new WeakSet();
+      return (key, value) => {
+        if (typeof value === 'object' && value !== null) {
+          if (seen.has(value)) {
+            return '[seen]';
+          }
+          seen.add(value);
+        }
+        return value;
+      };
+    },
+    2,
+  );
+
 afterEach(function afterEach() {
   unstable_resetCleanupTracking();
   unstable_resetCreateSelectorCache();