[FIX] tests: update tests error messages

Updating my node version to v16, I noticed many tests breaking, because
the way errors are formatted did change.  This commit ensures that the
test suite keeps working for all node versions.

.github/workflows/deploy.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x]
+        node-version: [12.x, 14.x, 16.x]
 
     steps:
     - uses: actions/checkout@v2

tests/component/class_style.test.ts

@@ -265,7 +265,8 @@ describe("class and style attributes with t-component", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'crash' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'crash'\)|Cannot read property 'crash' of undefined/g
+    expect(error.message).toMatch(regexp);
     expect(fixture.innerHTML).toBe("");
   });
 });

tests/component/error_handling.test.ts

@@ -95,7 +95,7 @@ describe("component error handling (catchError)", () => {
         try {
           await super.render();
         } catch (e) {
-          expect(e.message).toBe("Cannot read property 'this' of undefined");
+          expect(e.message).toMatch(/Cannot read properties of undefined \(reading 'this'\)|Cannot read property 'this' of undefined/);
         }
       }
     }
@@ -359,7 +359,8 @@ describe("component error handling (catchError)", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'crash' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'crash'\)|Cannot read property 'crash' of undefined/g
+    expect(error.message).toMatch(regexp);
 
     expect(console.error).toBeCalledTimes(0);
     console.error = consoleError;
@@ -469,7 +470,8 @@ describe("component error handling (catchError)", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'crash' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'crash'\)|Cannot read property 'crash' of undefined/g
+    expect(error.message).toMatch(regexp);
 
     expect(console.error).toBeCalledTimes(0);
     console.error = consoleError;
@@ -495,7 +497,8 @@ describe("component error handling (catchError)", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'crash' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'crash'\)|Cannot read property 'crash' of undefined/g
+    expect(error.message).toMatch(regexp);
 
     expect(console.error).toBeCalledTimes(0);
     console.error = consoleError;
@@ -518,7 +521,8 @@ describe("component error handling (catchError)", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'y' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'y'\)|Cannot read property 'y' of undefined/g
+    expect(error.message).toMatch(regexp);
   });
 
   test("simple catchError", async () => {

tests/misc/portal.test.ts

@@ -546,7 +546,8 @@ describe("Portal: Basic use and DOM placement", () => {
       error = e;
     }
     expect(error).toBeDefined();
-    expect(error.message).toBe("Cannot read property 'crash' of undefined");
+    const regexp = /Cannot read properties of undefined \(reading 'crash'\)|Cannot read property 'crash' of undefined/g
+    expect(error.message).toMatch(regexp);
   });
 
   test("portal manual unmount", async () => {