How do I test GraphQL resolvers with gqlgen in Go?

Testing GraphQL resolvers with gqlgen in Go involves writing unit tests to ensure that your resolver functions behave as expected. Here’s a guide on how to set up and run tests for your GraphQL resolvers.

Step 1: Set Up Your GraphQL Server

Ensure that your server is correctly set up using gqlgen. You should have your schema defined and resolver functions implemented.

Step 2: Writing a Test for a Resolver

You can create a file called resolver_test.go in your project directory. In this file, you'll write your tests. Here's a basic example of how to test a resolver in Go using gqlgen:

package graph import ( "context" "testing" "github.com/stretchr/testify/assert" "github.com/yourusername/yourproject/graph/generated" "github.com/yourusername/yourproject/graph/model" ) func TestQuery_Example(t *testing.T) { // Set up a context ctx := context.Background() // Create a test resolver instance resolver := generated.NewResolver() // Call the resolver method you wish to test result, err := resolver.Query().Example(ctx) // Assert the expected outcomes assert.NoError(t, err) assert.NotNil(t, result) // Add more assertions based on your expected results }

Step 3: Run Your Tests

You can run your tests using the following command:

go test ./...

Testing GraphQL resolvers gqlgen Go GraphQL unit tests resolver functions

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