# Test Environment Configuration Helpers - Verification

## Task
Verify test environment configuration helpers work correctly according to acceptance criteria.

## Results

All acceptance criteria verified and passing:

### 1. IsTestMode() ✅
- Implementation (line 29-32): Returns `true` if `ZAI_PROXY_TEST_MODE=="true"` OR `testing.Testing()`
- Test (line 594-599): Verifies it returns `true` during test execution
- Status: PASS

### 2. GetTestMaxRetries() default value ✅
- Implementation (line 34-43): Returns `DefaultTestMaxRetries` (1) when no override
- Constant (line 26): `DefaultTestMaxRetries = 1`
- Test (line 601-606): Confirms default is 1
- Status: PASS

### 3. GetTestMaxRetries() env override ✅
- Implementation (line 37-40): Parses `MAX_RETRIES` env var if set
- Test cases (line 608-633):
  - Valid values: 0, 1, 5, 100 all parsed correctly
  - Invalid values ("abc", "-1") safely default to 1
- Status: PASS

### 4. ConfigureTestEnv() sets all variables ✅
- Implementation (line 45-57): Sets 7 required environment variables:
  - `MAX_RETRIES` = "1"
  - `ZAI_PROXY_TEST_MODE` = "true"
  - `DEPLOYMENT_VARIANT` = "test"
  - `TOKEN_COUNTING_ENABLED` = "false"
  - `RATE_LIMIT_INITIAL` = "1000"
  - `RATE_LIMIT_MIN` = "1000"
  - `RATE_LIMIT_MAX` = "1000"
- Test (line 635-658): Verifies each variable is set correctly
- Status: PASS

## Test Run
```
go test -v -run TestHelperFunctions ./proxy/
```
All 19 subtests passed.

## Files Reviewed
- `/home/coding/zai-proxy/proxy/helpers_test.go` (lines 17-57 for implementations, 593-658 for tests)