Test Case #1
Name: Empty, SKIP
`- File(, Status=SKIP)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=SKIP)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      `- Rule/When(Status=FAIL)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
         `- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
            `- GuardClauseUnaryCheck(Status=FAIL, Comparison=not EMPTY, Value-At=(unresolved, Path=[L:0,C:0] Value={}))[Context= %s3_buckets_server_side_encryption not EMPTY  ]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = SKIP

Test Case #2
Name: No resources, SKIP
`- File(, Status=SKIP)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=SKIP)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      `- Rule/When(Status=FAIL)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
         `- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
            `- GuardClauseUnaryCheck(Status=FAIL, Comparison=not EMPTY, Value-At=(unresolved, Path=/Resources[L:0,C:0] Value={}))[Context= %s3_buckets_server_side_encryption not EMPTY  ]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = SKIP

Test Case #3
Name: S3 Bucket Encryption set to SSE AES 256, PASS
`- File(, Status=PASS)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=PASS)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      |- Rule/When(Status=PASS)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
      |  `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
      |     |- Filter/ConjunctionsBlock(Status=PASS)[Context=Filter/Map#2]
      |     |  |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Type EQUALS  "AWS::S3::Bucket"]
      |     |  |  `- GuardClauseValueCheck(Status=PASS)[Context= Type EQUALS  "AWS::S3::Bucket"]
      |     |  `- Disjunction(Status = PASS)[Context=cfn_guard::rules::exprs::GuardClause#disjunction]
      |     |     `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Metadata.guard.SuppressedRules not EXISTS  ]
      |     |        `- GuardClauseValueCheck(Status=PASS)[Context= Metadata.guard.SuppressedRules not EXISTS  ]
      |     `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption not EMPTY  ]
      |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      |  `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
         `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = PASS

Test Case #4
Name: S3 Bucket Encryption set to SSE AWS KMS key, PASS
`- File(, Status=PASS)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=PASS)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      |- Rule/When(Status=PASS)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
      |  `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
      |     |- Filter/ConjunctionsBlock(Status=PASS)[Context=Filter/Map#2]
      |     |  |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Type EQUALS  "AWS::S3::Bucket"]
      |     |  |  `- GuardClauseValueCheck(Status=PASS)[Context= Type EQUALS  "AWS::S3::Bucket"]
      |     |  `- Disjunction(Status = PASS)[Context=cfn_guard::rules::exprs::GuardClause#disjunction]
      |     |     `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Metadata.guard.SuppressedRules not EXISTS  ]
      |     |        `- GuardClauseValueCheck(Status=PASS)[Context= Metadata.guard.SuppressedRules not EXISTS  ]
      |     `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption not EMPTY  ]
      |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      |  `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
         `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = PASS

Test Case #5
Name: S3 Bucket Encryption not set, FAIL
`- File(, Status=FAIL)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=FAIL)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      |- Rule/When(Status=PASS)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
      |  `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
      |     |- Filter/ConjunctionsBlock(Status=PASS)[Context=Filter/Map#2]
      |     |  |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Type EQUALS  "AWS::S3::Bucket"]
      |     |  |  `- GuardClauseValueCheck(Status=PASS)[Context= Type EQUALS  "AWS::S3::Bucket"]
      |     |  `- Disjunction(Status = PASS)[Context=cfn_guard::rules::exprs::GuardClause#disjunction]
      |     |     `- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Metadata.guard.SuppressedRules not EXISTS  ]
      |     |        `- GuardClauseValueCheck(Status=PASS)[Context= Metadata.guard.SuppressedRules not EXISTS  ]
      |     `- GuardClauseValueCheck(Status=PASS)[Context= %s3_buckets_server_side_encryption not EMPTY  ]
      |- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      |  `- GuardClauseUnaryCheck(Status=FAIL, Comparison= EXISTS, Value-At=(unresolved, Path=/Resources/ExampleS3/Properties[L:0,C:0] Value={"BucketName":"my-bucket"}))[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption EXISTS  ]
      `- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
         `- GuardClauseBinaryCheck(Status=FAIL, Comparison= IN, from=(unresolved, Path=/Resources/ExampleS3/Properties[L:0,C:0] Value={"BucketName":"my-bucket"}), to=)[Context= %s3_buckets_server_side_encryption[*].Properties.BucketEncryption.ServerSideEncryptionConfiguration[*].ServerSideEncryptionByDefault.SSEAlgorithm IN  ["aws:kms","AES256"]]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = FAIL

Test Case #6
Name: S3 Bucket Encryption not set but rule is suppressed, SKIP
`- File(, Status=SKIP)[Context=File(rules=1)]
   `- Rule(S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED, Status=SKIP)[Context=S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED]
      `- Rule/When(Status=FAIL)[Context=Rule#S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED/When]
         `- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block %s3_buckets_server_side_encryption not EMPTY  ]
            |- Filter/ConjunctionsBlock(Status=FAIL)[Context=Filter/Map#2]
            |  |- GuardClauseBlock(Status = PASS)[Context=GuardAccessClause#block Type EQUALS  "AWS::S3::Bucket"]
            |  |  `- GuardClauseValueCheck(Status=PASS)[Context= Type EQUALS  "AWS::S3::Bucket"]
            |  `- Disjunction(Status = FAIL)[Context=cfn_guard::rules::exprs::GuardClause#disjunction]
            |     |- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block Metadata.guard.SuppressedRules not EXISTS  ]
            |     |  `- GuardClauseUnaryCheck(Status=FAIL, Comparison=not EXISTS, Value-At=(resolved, Path=/Resources/ExampleS3/Metadata/guard/SuppressedRules[L:0,C:0] Value=["S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED"]))[Context= Metadata.guard.SuppressedRules not EXISTS  ]
            |     `- GuardClauseBlock(Status = FAIL)[Context=GuardAccessClause#block Metadata.guard.SuppressedRules.* not EQUALS  "S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED"]
            |        `- GuardClauseBinaryCheck(Status=FAIL, Comparison=not EQUALS, from=(resolved, Path=/Resources/ExampleS3/Metadata/guard/SuppressedRules/0[L:0,C:0] Value="S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED"), to=(resolved, Path=[L:0,C:0] Value="S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED"))[Context= Metadata.guard.SuppressedRules.* not EQUALS  "S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED"]
            `- GuardClause(Status=FAIL, Empty, )[Context= %s3_buckets_server_side_encryption not EMPTY  ]
  PASS Rules:
    S3_BUCKET_SERVER_SIDE_ENCRYPTION_ENABLED: Expected = SKIP