add more tests to cover account level

Author: tmacro

tests/unit/api/apiUtils/rateLimit/config.js

@@ -558,6 +558,24 @@ describe('parseRateLimitConfig', () => {
                 /rateLimiting configuration is invalid.*"bucket.defaultConfig.requestsPerSecond.burstCapacity" must be a number/
             );
         });
+
+        it('should accept float burstCapacity', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                bucket: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: 1.5,
+                        },
+                    },
+                },
+            };
+
+            const result = parseRateLimitConfig(config, 1);
+            const bucketSize = result.bucket.defaultConfig.requestsPerSecond.bucketSize;
+            assert.strictEqual(bucketSize, 1.5 * 1000);
+        });
     });
 
     describe('bucket.configCacheTTL validation', () => {
@@ -941,6 +959,121 @@ describe('parseRateLimitConfig', () => {
         });
     });
 
+    describe('account burstCapacity validation', () => {
+        it('should use default burstCapacity when not provided', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                        },
+                    },
+                },
+            };
+
+            const result = parseRateLimitConfig(config, 1);
+            const bucketSize = result.account.defaultConfig.requestsPerSecond.bucketSize;
+            assert.strictEqual(bucketSize, constants.rateLimitDefaultBurstCapacity * 1000);
+        });
+
+        it('should use custom burstCapacity when provided', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: 20,
+                        },
+                    },
+                },
+            };
+
+            const result = parseRateLimitConfig(config, 1);
+            const bucketSize = result.account.defaultConfig.requestsPerSecond.bucketSize;
+            assert.strictEqual(bucketSize, 20 * 1000);
+        });
+
+        it('should accept float burstCapacity', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: 1.5,
+                        },
+                    },
+                },
+            };
+
+            const result = parseRateLimitConfig(config, 1);
+            const bucketSize = result.account.defaultConfig.requestsPerSecond.bucketSize;
+            assert.strictEqual(bucketSize, 1.5 * 1000);
+        });
+
+        it('should throw if burstCapacity is negative', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: -5,
+                        },
+                    },
+                },
+            };
+
+            assert.throws(
+                () => parseRateLimitConfig(config, 1),
+                // eslint-disable-next-line max-len
+                /rateLimiting configuration is invalid.*"account.defaultConfig.requestsPerSecond.burstCapacity" must be a positive number/
+            );
+        });
+
+        it('should throw if burstCapacity is zero', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: 0,
+                        },
+                    },
+                },
+            };
+
+            assert.throws(
+                () => parseRateLimitConfig(config, 1),
+                // eslint-disable-next-line max-len
+                /rateLimiting configuration is invalid.*"account.defaultConfig.requestsPerSecond.burstCapacity" must be a positive number/
+            );
+        });
+
+        it('should throw if burstCapacity is not a number', () => {
+            const config = {
+                serviceUserArn: 'arn:aws:iam::123456789012:user/rate-limit-service',
+                account: {
+                    defaultConfig: {
+                        requestsPerSecond: {
+                            limit: 100,
+                            burstCapacity: 'ten',
+                        },
+                    },
+                },
+            };
+
+            assert.throws(
+                () => parseRateLimitConfig(config, 1),
+                // eslint-disable-next-line max-len
+                /rateLimiting configuration is invalid.*"account.defaultConfig.requestsPerSecond.burstCapacity" must be a number/
+            );
+        });
+    });
+
     describe('schema validation - unknown fields', () => {
         it('should reject unknown top-level fields', () => {
             const config = {