Add unsupported/sse message export/import

ts/windows/main/preload_test.ts

@@ -5,9 +5,12 @@
 
 import { ipcRenderer as ipc } from 'electron';
 import { sync } from 'fast-glob';
+import { inspect } from 'util';
 
 // eslint-disable-next-line import/no-extraneous-dependencies
-import { assert } from 'chai';
+import { assert, config as chaiConfig } from 'chai';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { reporters } from 'mocha';
 
 import { getSignalProtocolStore } from '../../SignalProtocolStore';
 import { initMessageCleanup } from '../../services/messageStateCleanup';
@@ -16,6 +19,28 @@ import { initializeRedux } from '../../state/initializeRedux';
 import * as Stickers from '../../types/Stickers';
 import { ThemeType } from '../../types/Util';
 
+// Show actual objects instead of abbreviated errors
+chaiConfig.truncateThreshold = 0;
+
+function patchDeepEqual(method: 'deepEqual' | 'deepStrictEqual'): void {
+  const originalFn = assert[method];
+  assert[method] = (...args) => {
+    try {
+      return originalFn(...args);
+    } catch (error) {
+      reporters.base.useColors = false;
+      error.message = reporters.base.generateDiff(
+        inspect(error.actual, { depth: Infinity, sorted: true }),
+        inspect(error.expected, { depth: Infinity, sorted: true })
+      );
+      throw error;
+    }
+  };
+}
+
+patchDeepEqual('deepEqual');
+patchDeepEqual('deepStrictEqual');
+
 window.assert = assert;
 
 // This is a hack to let us run TypeScript tests in the renderer process. See the