Add tests for getSubmittedFormData()

package.json

@@ -67,6 +67,7 @@
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.39.0",
 		"intl-messageformat": "^10.5.14",
+		"jsdom": "^24.0.0",
 		"prettier": "^3.2.5",
 		"prettier-plugin-svelte": "^3.2.3",
 		"publint": "^0.2.8",

src/lib/Crud/Form.test.ts

@@ -0,0 +1,65 @@
+import {describe, expect, it, vi} from 'vitest';
+import {testOptions} from '$lib/TestOptions';
+import {getSubmittedFormData} from "$lib";
+
+describe('Submitted form data', () => {
+    it(
+        'does not work if no target is specified',
+        () => {
+            const consoleError = vi.spyOn(console, 'error').mockImplementation(() => undefined);
+
+            const submitted = getSubmittedFormData({} as unknown as SubmitEvent);
+
+            expect(submitted).toStrictEqual({});
+            expect(consoleError).toHaveBeenCalledOnce();
+            expect(consoleError).toHaveBeenLastCalledWith('No form target specified. Did you forget to inject the proper SubmitEvent to the function?');
+        },
+        testOptions
+    );
+
+    it(
+        'can handle empty input',
+        () => {
+            const submitted = getSubmittedFormData(mockSubmitEvent());
+
+            expect(submitted).toStrictEqual({});
+        },
+        testOptions
+    );
+
+    it(
+        'can handle simple input',
+        () => {
+            const submitted = getSubmittedFormData(mockSubmitEvent([
+                ['title', 'Some title'],
+                ['description', 'Some description'],
+            ]));
+
+            expect(submitted).toStrictEqual({
+                'title': 'Some title',
+                'description': 'Some description',
+            });
+        },
+        testOptions
+    );
+});
+
+function mockSubmitEvent(submittedData: Array<[string, string]> = []) {
+    const form = document.createElement('form');
+
+    const submitter = document.createElement('button');
+    submitter.type = 'submit';
+    form.appendChild(submitter);
+
+    submittedData.forEach(([key, value]) => {
+        const input = document.createElement('input');
+        input.name = key;
+        input.value = value;
+        form.appendChild(input);
+    });
+
+    return {
+        submitter: submitter,
+        target: form,
+    } as unknown as SubmitEvent;
+}

vite.config.ts

@@ -7,6 +7,7 @@ export default defineConfig({
 	test: {
 		include: ['src/**/*.{test,spec}.ts'],
 		exclude: [...configDefaults.exclude, '**/build/**', '**/.svelte-kit/**', '**/dist/**'],
+    	environment: 'jsdom',
 		coverage: {
 			exclude: [
 				...(configDefaults?.coverage?.exclude ?? []),