49 lines
2.0 KiB
JavaScript
49 lines
2.0 KiB
JavaScript
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/**
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* Property-Based Test: Password Change Round-Trip
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*
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* Feature: user-profile, Property 3: Password change round-trip
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*
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* For any valid current password and any new password of 8+ characters,
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* after a successful change, bcrypt.compare(newPassword, storedHash) returns true.
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*
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* Validates: Requirements 2.2, 2.7
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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 round-trip 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 3: Password change round-trip', () => {
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it('after a password change, bcrypt.compare(newPassword, newHash) returns true', async () => {
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await fc.assert(
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fc.asyncProperty(
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// Current password: any non-empty string (length >= 1)
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fc.string({ minLength: 1, maxLength: 72 }),
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// New password: any string of length >= 8 (bcrypt max input is 72 bytes)
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fc.string({ minLength: 8, maxLength: 72 }),
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async (currentPassword, newPassword) => {
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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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// Step 2: Verify the current password against the stored hash
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// (simulates the bcrypt.compare check in the change-password route)
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const currentPasswordValid = await bcrypt.compare(currentPassword, currentHash);
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expect(currentPasswordValid).toBe(true);
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// Step 3: Hash the new password (simulates bcrypt.hash(newPassword, 10) in the route)
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const newHash = await bcrypt.hash(newPassword, BCRYPT_COST);
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// Step 4: Verify the new password matches the new hash (round-trip property)
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const newPasswordValid = await bcrypt.compare(newPassword, newHash);
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expect(newPasswordValid).toBe(true);
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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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