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* @license
* Copyright 2026 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { describe, it, expect } from 'vitest';
import type { GeminiUserTier } from '../code_assist/types.js';
import {
buildG1Url,
getG1CreditBalance,
G1_CREDIT_TYPE,
G1_UTM_CAMPAIGNS,
isOverageEligibleModel,
shouldAutoUseCredits,
shouldShowEmptyWalletMenu,
shouldShowOverageMenu,
wrapInAccountChooser,
} from './billing.js';
describe('billing', () => {
describe('wrapInAccountChooser', () => {
it('should wrap URL with AccountChooser redirect', () => {
const result = wrapInAccountChooser(
'user@gmail.com',
'https://one.google.com/ai/activity',
);
expect(result).toBe(
'https://accounts.google.com/AccountChooser?Email=user%40gmail.com&continue=https%3A%2F%2Fone.google.com%2Fai%2Factivity',
);
});
it('should handle special characters in email', () => {
const result = wrapInAccountChooser(
'user+test@example.com',
'https://example.com',
);
expect(result).toContain('Email=user%2Btest%40example.com');
});
});
describe('buildG1Url', () => {
it('should build activity URL with UTM params wrapped in AccountChooser', () => {
const result = buildG1Url(
'activity',
'user@gmail.com',
G1_UTM_CAMPAIGNS.MANAGE_ACTIVITY,
);
// Should contain AccountChooser prefix
expect(result).toContain('https://accounts.google.com/AccountChooser');
expect(result).toContain('Email=user%40gmail.com');
// The continue URL should contain the G1 activity path and UTM params
expect(result).toContain('one.google.com%2Fai%2Factivity');
expect(result).toContain('utm_source%3Dgemini_cli');
expect(result).toContain(
'utm_campaign%3Dhydrogen_cli_settings_ai_credits_activity_page',
);
});
it('should build credits URL with UTM params wrapped in AccountChooser', () => {
const result = buildG1Url(
'credits',
'test@example.com',
G1_UTM_CAMPAIGNS.EMPTY_WALLET_ADD_CREDITS,
);
expect(result).toContain('https://accounts.google.com/AccountChooser');
expect(result).toContain('one.google.com%2Fai%2Fcredits');
expect(result).toContain(
'utm_campaign%3Dhydrogen_cli_insufficient_credits_add_credits',
);
});
});
describe('getG1CreditBalance', () => {
it('should return null for null tier', () => {
expect(getG1CreditBalance(null)).toBeNull();
});
it('should return null for undefined tier', () => {
expect(getG1CreditBalance(undefined)).toBeNull();
});
it('should return null for tier without availableCredits', () => {
const tier: GeminiUserTier = { id: 'PERSONAL' };
expect(getG1CreditBalance(tier)).toBeNull();
});
it('should return null for empty availableCredits array', () => {
const tier: GeminiUserTier = { id: 'PERSONAL', availableCredits: [] };
expect(getG1CreditBalance(tier)).toBeNull();
});
it('should return null when no G1 credit type found', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [
{ creditType: 'CREDIT_TYPE_UNSPECIFIED', creditAmount: '100' },
],
};
expect(getG1CreditBalance(tier)).toBeNull();
});
it('should return G1 credit balance when present', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [{ creditType: G1_CREDIT_TYPE, creditAmount: '500' }],
};
expect(getG1CreditBalance(tier)).toBe(500);
});
it('should return G1 credit balance when multiple credit types present', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [
{ creditType: 'CREDIT_TYPE_UNSPECIFIED', creditAmount: '100' },
{ creditType: G1_CREDIT_TYPE, creditAmount: '750' },
],
};
expect(getG1CreditBalance(tier)).toBe(750);
});
it('should return 0 for invalid credit amount', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [
{ creditType: G1_CREDIT_TYPE, creditAmount: 'invalid' },
],
};
expect(getG1CreditBalance(tier)).toBe(0);
});
it('should handle large credit amounts (int64 as string)', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [
{ creditType: G1_CREDIT_TYPE, creditAmount: '9999999999' },
],
};
expect(getG1CreditBalance(tier)).toBe(9999999999);
});
it('should sum multiple credits of the same G1 type', () => {
const tier: GeminiUserTier = {
id: 'PERSONAL',
availableCredits: [
{ creditType: G1_CREDIT_TYPE, creditAmount: '1000' },
{ creditType: G1_CREDIT_TYPE, creditAmount: '8' },
],
};
expect(getG1CreditBalance(tier)).toBe(1008);
});
});
describe('shouldAutoUseCredits', () => {
it('should return true when strategy is always and balance > 0', () => {
expect(shouldAutoUseCredits('always', 100)).toBe(true);
});
it('should return false when strategy is always but balance is 0', () => {
expect(shouldAutoUseCredits('always', 0)).toBe(false);
});
it('should return false when strategy is ask', () => {
expect(shouldAutoUseCredits('ask', 100)).toBe(false);
});
it('should return false when strategy is never', () => {
expect(shouldAutoUseCredits('never', 100)).toBe(false);
});
it('should return false when creditBalance is null (ineligible)', () => {
expect(shouldAutoUseCredits('always', null)).toBe(false);
});
});
describe('shouldShowOverageMenu', () => {
it('should return true when strategy is ask and balance > 0', () => {
expect(shouldShowOverageMenu('ask', 100)).toBe(true);
});
it('should return false when strategy is ask but balance is 0', () => {
expect(shouldShowOverageMenu('ask', 0)).toBe(false);
});
it('should return false when strategy is always', () => {
expect(shouldShowOverageMenu('always', 100)).toBe(false);
});
it('should return false when strategy is never', () => {
expect(shouldShowOverageMenu('never', 100)).toBe(false);
});
it('should return false when creditBalance is null (ineligible)', () => {
expect(shouldShowOverageMenu('ask', null)).toBe(false);
});
});
describe('shouldShowEmptyWalletMenu', () => {
it('should return true when strategy is ask and balance is 0', () => {
expect(shouldShowEmptyWalletMenu('ask', 0)).toBe(true);
});
it('should return true when strategy is always and balance is 0', () => {
expect(shouldShowEmptyWalletMenu('always', 0)).toBe(true);
});
it('should return false when strategy is never', () => {
expect(shouldShowEmptyWalletMenu('never', 0)).toBe(false);
});
it('should return false when balance > 0', () => {
expect(shouldShowEmptyWalletMenu('ask', 100)).toBe(false);
});
it('should return false when creditBalance is null (ineligible)', () => {
expect(shouldShowEmptyWalletMenu('ask', null)).toBe(false);
});
});
describe('isOverageEligibleModel', () => {
it('should return true for gemini-3-pro-preview', () => {
expect(isOverageEligibleModel('gemini-3-pro-preview')).toBe(true);
});
it('should return true for gemini-3.1-pro-preview', () => {
expect(isOverageEligibleModel('gemini-3.1-pro-preview')).toBe(true);
});
it('should return false for gemini-3.1-pro-preview-customtools', () => {
expect(isOverageEligibleModel('gemini-3.1-pro-preview-customtools')).toBe(
false,
);
});
it('should return true for gemini-3-flash-preview', () => {
expect(isOverageEligibleModel('gemini-3-flash-preview')).toBe(true);
});
it('should return false for gemini-2.5-pro', () => {
expect(isOverageEligibleModel('gemini-2.5-pro')).toBe(false);
});
it('should return false for gemini-2.5-flash', () => {
expect(isOverageEligibleModel('gemini-2.5-flash')).toBe(false);
});
it('should return false for custom model names', () => {
expect(isOverageEligibleModel('my-custom-model')).toBe(false);
});
});
});
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