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README.md | ||
unitTest.go | ||
unitTest_test.go |
Example
You can instantiate *dynamodb.DynamoDB
and pass that as a parameter to all
methods connecting to DynamoDB, or as unitTest
demonstrates, create your own
type
and pass it along as a field.
Test-compatible DynamoDB field
If you use *dynamodb.DynamoDB
as a field, you will be unable to unit test it,
as documented in #88. Cast it instead as dynamodbiface.DynamoDBAPI
:
type ItemGetter struct {
DynamoDB dynamodbiface.DynamoDBAPI
}
Querying actual DynamoDB
You'll need an *aws.Config
and *session.Session
for these to work correctly:
// Setup
var getter = new(ItemGetter)
var config *aws.Config = &aws.Config{Region: aws.String("us-west-2"),}
var sess *session.Session = session.NewSession(config)
var svc *dynamodb.DynamoDB = dynamodb.New()
getter.DynamoDB = dynamodbiface.DynamoDBAPI(svc)
// Finally
getter.DynamoDB.GetItem(/* ... */)
Querying in tests
Construct a fakeDynamoDB
and add the necessary methods for each of those
structs (custom ones for ItemGetter
and whatever methods you're using for
DynamoDB),
and you're good to go!
type fakeDynamoDB struct {
dynamodbiface.DynamoDBAPI
}
var getter = new(ItemGetter)
getter.DynamoDB = &fakeDynamoDB{}
// And to run it (assuming you've mocked fakeDynamoDB.GetItem)
getter.DynamoDB.GetItem(/* ... */)
Output
$ go test -tags example -cover
PASS
coverage: 100.0% of statements
ok _/Users/shatil/workspace/aws-sdk-go/example/service/dynamodb/unitTest 0.008s