Thymeleaf + Vue application

spring-boot/thymeleaf-vue/client/jest/console-error-to-exception.setup.js

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+import { format } from "util";
+
+/**
+ * Log UnhandledRejection exceptions to console.error to be picked up by
+ * below logging patterns. This will cause tests to fail when Vue components
+ * are missing required props, for example.
+ */
+process.on("unhandledRejection", (error) => {
+  // Will print "unhandledRejection err is not defined"
+  console.error("unhandledRejection", error.message);
+});
+
+/**
+ * Intercept calls to console.error and fail a test on certain logging patterns.
+ */
+beforeEach(() => {
+  const { error } = global.console;
+
+  global.console.error = (...args) => {
+    for (let i = 0; i < args.length; i += 1) {
+      const arg = args[i];
+
+      // add patterns here that should fail a test
+      if (
+        typeof arg === "string" &&
+        (arg.includes("Vue warn") ||
+          arg.includes("unhandledRejection") ||
+          arg.includes("Not implemented"))
+      ) {
+        throw new Error(format(...args));
+      }
+    }
+    error(...args);
+  };
+});

spring-boot/thymeleaf-vue/client/jest/mock-canvas.setup.js

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+// Import mock canvas to be able to assert canvas operations.
+import 'jest-canvas-mock';