54 lines
2.2 KiB
JavaScript
54 lines
2.2 KiB
JavaScript
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/**
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* Property-Based Test: Incorrect Current Password Is Always Rejected
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*
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* Feature: user-profile, Property 4: Incorrect current password is always rejected
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*
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* For any password string that does not match the user's current password,
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* the endpoint returns 401 and the stored hash remains unchanged.
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*
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* Validates: Requirements 2.3
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*/
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const fc = require('fast-check');
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const bcrypt = require('bcryptjs');
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// bcrypt cost factor — production uses 10, but we use 4 (the minimum) here
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// to keep 100 iterations feasible within test timeouts. The rejection property
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// holds regardless of cost factor.
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const BCRYPT_COST = 4;
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describe('Feature: user-profile, Property 4: Incorrect current password is always rejected', () => {
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it('bcrypt.compare rejects any wrong password and the stored hash remains unchanged', async () => {
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await fc.assert(
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fc.asyncProperty(
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// Current password: any non-empty string (bcrypt max input is 72 bytes)
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fc.string({ minLength: 1, maxLength: 72 }),
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// Wrong password: any non-empty string (will be filtered to differ from current)
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fc.string({ minLength: 1, maxLength: 72 }),
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async (currentPassword, wrongPassword) => {
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// Ensure the wrong password is always different from the current password
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fc.pre(wrongPassword !== currentPassword);
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// Step 1: Hash the current password (simulates existing stored hash)
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const currentHash = await bcrypt.hash(currentPassword, BCRYPT_COST);
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// Capture the hash before the failed attempt
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const hashBefore = currentHash;
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// Step 2: Attempt to verify the wrong password against the stored hash
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// (simulates the bcrypt.compare check in the change-password route)
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const isValid = await bcrypt.compare(wrongPassword, currentHash);
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// The wrong password must always be rejected
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expect(isValid).toBe(false);
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// Step 3: The stored hash remains unchanged after the failed attempt
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// (no mutation should occur on rejection)
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expect(currentHash).toBe(hashBefore);
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}
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),
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{ numRuns: 100 }
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);
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}, 120000); // 2-minute timeout for 100 bcrypt iterations
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});
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