resource/aws_dynamodb_table_item: Correctly handle List and Map attribute JSON values

[gdavison]

Description

When using a List ("L") or Map ("M") attribute in a DynamoDB Table Item, a plan was showing a diff, like the following:

~ resource "aws_dynamodb_table_item" "item" {
        id         = "doormat-configuration|key||ssh_sign_ttl_config|"
      ~ item       = jsonencode(
          ~ {
              ~ value                = {
                  ~ M = {
                      ~ valid_after  = {
                          - B    = null -> null
                          - BOOL = null -> null
                          - BS   = null -> null
                          - L    = null -> null
                          - M    = null -> null
                          - NS   = null -> null
                          - NULL = null -> null
                          - S    = null -> null
                          - SS   = null -> null
                            # (1 unchanged element hidden)
                        }
                      ~ valid_before = {
                          - B    = null -> null
                          - BOOL = null -> null
                          - BS   = null -> null
                          - L    = null -> null
                          - M    = null -> null
                          - NS   = null -> null
                          - NULL = null -> null
                          - S    = null -> null
                          - SS   = null -> null
                            # (1 unchanged element hidden)
                        }
                    }
                }
                # (1 unchanged element hidden)
            }
        )
        # (2 unchanged attributes hidden)
    }

The unchanged values, an "N" in this case, are indicated by # (1 unchanged element hidden).

Relations

Closes #30689

References

Output from Acceptance Testing

$ make testacc PKG=dynamodb TESTS='TestAccDynamoDBTableItem_|TestAccDynamoDBTableItemDataSource_'

--- PASS: TestAccDynamoDBTableItem_withDuplicateItemsSameRangeKey (37.42s)
--- PASS: TestAccDynamoDBTableItem_withDuplicateItemsDifferentRangeKey (54.76s)
--- PASS: TestAccDynamoDBTableItem_rangeKey (55.10s)
--- PASS: TestAccDynamoDBTableItem_disappears (55.13s)
--- PASS: TestAccDynamoDBTableItem_wonkyItems (55.15s)
--- PASS: TestAccDynamoDBTableItemDataSource_basic (55.57s)
--- PASS: TestAccDynamoDBTableItemDataSource_projectionExpression (56.14s)
--- PASS: TestAccDynamoDBTableItem_withMultipleItems (56.19s)
--- PASS: TestAccDynamoDBTableItemDataSource_expressionAttributeNames (56.25s)
--- PASS: TestAccDynamoDBTableItem_basic (59.57s)
--- PASS: TestAccDynamoDBTableItem_mapOutOfBandUpdate (71.58s)
--- PASS: TestAccDynamoDBTableItem_update (73.49s)
--- PASS: TestAccDynamoDBTableItem_updateWithRangeKey (73.51s)

[github-actions]

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[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccDynamoDBTableItem' PKG=dynamodb ACCTEST_PARALLELISM=3
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/dynamodb/... -v -count 1 -parallel 3  -run=TestAccDynamoDBTableItem -timeout 180m
=== RUN   TestAccDynamoDBTableItemDataSource_basic
=== PAUSE TestAccDynamoDBTableItemDataSource_basic
=== RUN   TestAccDynamoDBTableItemDataSource_projectionExpression
=== PAUSE TestAccDynamoDBTableItemDataSource_projectionExpression
=== RUN   TestAccDynamoDBTableItemDataSource_expressionAttributeNames
=== PAUSE TestAccDynamoDBTableItemDataSource_expressionAttributeNames
=== RUN   TestAccDynamoDBTableItem_basic
=== PAUSE TestAccDynamoDBTableItem_basic
=== RUN   TestAccDynamoDBTableItem_rangeKey
=== PAUSE TestAccDynamoDBTableItem_rangeKey
=== RUN   TestAccDynamoDBTableItem_withMultipleItems
=== PAUSE TestAccDynamoDBTableItem_withMultipleItems
=== RUN   TestAccDynamoDBTableItem_withDuplicateItemsSameRangeKey
=== PAUSE TestAccDynamoDBTableItem_withDuplicateItemsSameRangeKey
=== RUN   TestAccDynamoDBTableItem_withDuplicateItemsDifferentRangeKey
=== PAUSE TestAccDynamoDBTableItem_withDuplicateItemsDifferentRangeKey
=== RUN   TestAccDynamoDBTableItem_wonkyItems
=== PAUSE TestAccDynamoDBTableItem_wonkyItems
=== RUN   TestAccDynamoDBTableItem_update
=== PAUSE TestAccDynamoDBTableItem_update
=== RUN   TestAccDynamoDBTableItem_updateWithRangeKey
=== PAUSE TestAccDynamoDBTableItem_updateWithRangeKey
=== RUN   TestAccDynamoDBTableItem_disappears
=== PAUSE TestAccDynamoDBTableItem_disappears
=== RUN   TestAccDynamoDBTableItem_mapOutOfBandUpdate
=== PAUSE TestAccDynamoDBTableItem_mapOutOfBandUpdate
=== CONT  TestAccDynamoDBTableItemDataSource_basic
=== CONT  TestAccDynamoDBTableItem_withDuplicateItemsDifferentRangeKey
=== CONT  TestAccDynamoDBTableItem_withDuplicateItemsSameRangeKey
--- PASS: TestAccDynamoDBTableItem_withDuplicateItemsSameRangeKey (30.54s)
=== CONT  TestAccDynamoDBTableItem_withMultipleItems
--- PASS: TestAccDynamoDBTableItem_withDuplicateItemsDifferentRangeKey (48.61s)
=== CONT  TestAccDynamoDBTableItem_rangeKey
--- PASS: TestAccDynamoDBTableItemDataSource_basic (48.86s)
=== CONT  TestAccDynamoDBTableItem_basic
--- PASS: TestAccDynamoDBTableItem_withMultipleItems (45.29s)
=== CONT  TestAccDynamoDBTableItemDataSource_expressionAttributeNames
--- PASS: TestAccDynamoDBTableItem_basic (46.75s)
=== CONT  TestAccDynamoDBTableItemDataSource_projectionExpression
--- PASS: TestAccDynamoDBTableItem_rangeKey (48.80s)
=== CONT  TestAccDynamoDBTableItem_updateWithRangeKey
--- PASS: TestAccDynamoDBTableItemDataSource_expressionAttributeNames (53.82s)
=== CONT  TestAccDynamoDBTableItem_mapOutOfBandUpdate
--- PASS: TestAccDynamoDBTableItemDataSource_projectionExpression (43.11s)
=== CONT  TestAccDynamoDBTableItem_disappears
--- PASS: TestAccDynamoDBTableItem_updateWithRangeKey (56.29s)
=== CONT  TestAccDynamoDBTableItem_update
--- PASS: TestAccDynamoDBTableItem_mapOutOfBandUpdate (42.33s)
=== CONT  TestAccDynamoDBTableItem_wonkyItems
--- PASS: TestAccDynamoDBTableItem_disappears (36.42s)
--- PASS: TestAccDynamoDBTableItem_update (39.65s)
--- PASS: TestAccDynamoDBTableItem_wonkyItems (24.60s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/dynamodb	213.278s

[github-actions]

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[github-actions]

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