Update existing tests to work with caching

- [x] 10. Update existing tests to work with caching
  - Run all existing tests to ensure no regressions
  - Update any tests that might be affected by caching behavior
  - Ensure test isolation by clearing cache between tests if needed
  - Verify all CRC algorithm tests still pass

Author: onethumb

.kiro/specs/crc-params-caching/tasks.md

@@ -63,7 +63,7 @@
   - Test cache operations under memory pressure
   - _Requirements: 4.1, 4.2_
 
-- [ ] 19. Update existing tests to work with caching
+- [x] 10. Update existing tests to work with caching
   - Run all existing tests to ensure no regressions
   - Update any tests that might be affected by caching behavior
   - Ensure test isolation by clearing cache between tests if needed

src/lib.rs

@@ -621,6 +621,8 @@ mod lib {
 
     #[test]
     fn test_checksum_with_custom_params() {
+        crate::cache::clear_cache();
+        
         // CRC-32 reflected
         assert_eq!(
             checksum_with_params(get_custom_crc32_reflected(), TEST_CHECK_STRING),
@@ -648,6 +650,8 @@ mod lib {
 
     #[test]
     fn test_get_custom_params() {
+        crate::cache::clear_cache();
+        
         assert_eq!(
             checksum_with_params(get_custom_crc32_reflected(), TEST_CHECK_STRING),
             CRC32_ISCSI.check,
@@ -678,6 +682,8 @@ mod lib {
 
     #[test]
     fn test_digest_updates_check_with_custom_params() {
+        crate::cache::clear_cache();
+        
         // CRC-32 reflected
         check_digest(
             Digest::new_with_params(get_custom_crc32_reflected()),
@@ -788,6 +794,8 @@ mod lib {
 
     #[test]
     fn test_combine_with_custom_params() {
+        crate::cache::clear_cache();
+        
         // CRC-32 reflected
         let crc32_params = get_custom_crc32_reflected();
         let checksum1 = checksum_with_params(crc32_params, "1234".as_ref());
@@ -845,6 +853,8 @@ mod lib {
 
     #[test]
     fn test_checksum_file_with_custom_params() {
+        crate::cache::clear_cache();
+        
         // Create a test file with repeating zeros
         let test_file_path = "test/test_crc32_hash_file_custom.bin";
         let data = vec![0u8; 1024 * 1024]; // 1 MiB of zeros