diff --git a/packages/frontend/test/aiscript/api.test.ts b/packages/frontend/test/aiscript/api.test.ts
index ad24625b96..34f880286c 100644
--- a/packages/frontend/test/aiscript/api.test.ts
+++ b/packages/frontend/test/aiscript/api.test.ts
@@ -37,6 +37,17 @@ let $iMock = vi.hoisted<Partial<typeof import('@/i.js').$i> | null >(
 	() => null
 );
 
+function errorWithPos<T extends errors.AiScriptError>(
+	error: T,
+	line: number,
+	column: number,
+): T {
+	const pos = { line, column };
+	error.pos = pos;
+	error.message = error.message + `\n  at <root> (Line ${pos.line}, Column ${pos.column})`;
+	return error;
+}
+
 vi.mock('@/i.js', () => {
 	return {
 		get $i() {
@@ -316,7 +327,7 @@ describe('AiScript common API', () => {
 			await expect(() => exe(`
 				Mk:api('https://example.com/api/ping', {})
 			`)).rejects.toStrictEqual(
-				new errors.AiScriptRuntimeError('invalid endpoint'),
+				errorWithPos(new errors.AiScriptRuntimeError('invalid endpoint'), 2, 11),
 			);
 			expect(misskeyApiMock).not.toHaveBeenCalled();
 		});
@@ -325,7 +336,7 @@ describe('AiScript common API', () => {
 			await expect(() => exe(`
 				Mk:api('ping')
 			`)).rejects.toStrictEqual(
-				new errors.AiScriptRuntimeError('expected param'),
+				errorWithPos(new errors.AiScriptRuntimeError('expected param'), 2, 11),
 			);
 			expect(misskeyApiMock).not.toHaveBeenCalled();
 		});
@@ -353,7 +364,7 @@ describe('AiScript common API', () => {
 			await expect(() => exe(`
 				Mk:save('key')
 			`)).rejects.toStrictEqual(
-				new errors.AiScriptRuntimeError('Expect anything, but got nothing.'),
+				errorWithPos(new errors.AiScriptRuntimeError('Expect anything, but got nothing.'), 2, 12),
 			);
 		});
 
diff --git a/packages/frontend/test/aiscript/ui.test.ts b/packages/frontend/test/aiscript/ui.test.ts
index 44a50aaa62..c9df070bec 100644
--- a/packages/frontend/test/aiscript/ui.test.ts
+++ b/packages/frontend/test/aiscript/ui.test.ts
@@ -316,10 +316,11 @@ describe('AiScript UI API', () => {
 
 	describe('textInput', () => {
 		test.concurrent('all options', async () => {
+			// https://github.com/aiscript-dev/aiscript/pull/948
 			const { root, get, outputs } = await exe(`
 				let text_input = Ui:C:textInput({
 					onInput: print
-					default: 'a'
+					"default": 'a'
 					label: 'b'
 					caption: 'c'
 				}, 'id')
@@ -356,10 +357,11 @@ describe('AiScript UI API', () => {
 
 	describe('textarea', () => {
 		test.concurrent('all options', async () => {
+			// https://github.com/aiscript-dev/aiscript/pull/948
 			const { root, get, outputs } = await exe(`
 				let textarea = Ui:C:textarea({
 					onInput: print
-					default: 'a'
+					"default": 'a'
 					label: 'b'
 					caption: 'c'
 				}, 'id')
@@ -396,10 +398,11 @@ describe('AiScript UI API', () => {
 
 	describe('numberInput', () => {
 		test.concurrent('all options', async () => {
+			// https://github.com/aiscript-dev/aiscript/pull/948
 			const { root, get, outputs } = await exe(`
 				let number_input = Ui:C:numberInput({
 					onInput: print
-					default: 1
+					"default": 1
 					label: 'a'
 					caption: 'b'
 				}, 'id')
@@ -557,10 +560,11 @@ describe('AiScript UI API', () => {
 
 	describe('switch', () => {
 		test.concurrent('all options', async () => {
+			// https://github.com/aiscript-dev/aiscript/pull/948
 			const { root, get, outputs } = await exe(`
 				let switch = Ui:C:switch({
 					onChange: print
-					default: false
+					"default": false
 					label: 'a'
 					caption: 'b'
 				}, 'id')
@@ -597,6 +601,7 @@ describe('AiScript UI API', () => {
 
 	describe('select', () => {
 		test.concurrent('all options', async () => {
+			// https://github.com/aiscript-dev/aiscript/pull/948
 			const { root, get, outputs } = await exe(`
 				let select = Ui:C:select({
 					items: [
@@ -604,7 +609,7 @@ describe('AiScript UI API', () => {
 						{ text: 'B', value: 'b' }
 					]
 					onChange: print
-					default: 'a'
+					"default": 'a'
 					label: 'c'
 					caption: 'd'
 				}, 'id')