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test(lambda): add direct coverage for grantInvokeLatestVersion resource grants #37487

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test(lambda): add direct coverage for grantInvokeLatestVersion resource grants #37487

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36 changes: 36 additions & 0 deletions packages/aws-cdk-lib/aws-lambda/test/function.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -636,6 +636,42 @@ describe('function', () => {
runtime: lambda.Runtime.PYTHON_3_9,
});
});

describe('grantInvokeLatestVersion', () => {
test('grants both $LATEST and unqualified function ARNs', () => {
// GIVEN
const stack = new cdk.Stack();

const fn = new lambda.Function(stack, 'MyLambda', {
code: new lambda.InlineCode('foo'),
handler: 'index.handler',
runtime: lambda.Runtime.NODEJS_LATEST,
});

const role = new iam.Role(stack, 'MyRole', {
assumedBy: new iam.ServicePrincipal('lambda.amazonaws.com'),
});

// WHEN
fn.grantInvokeLatestVersion(role);

// THEN
Template.fromStack(stack).hasResourceProperties('AWS::IAM::Policy', {
PolicyDocument: {
Statement: Match.arrayWith([
Match.objectLike({
Action: 'lambda:InvokeFunction',
Effect: 'Allow',
Resource: Match.arrayWith([
{ 'Fn::GetAtt': ['MyLambdaCCE802FB', 'Arn'] },
{ 'Fn::Join': ['', [{ 'Fn::GetAtt': ['MyLambdaCCE802FB', 'Arn'] }, ':$LATEST']] },
]),
}),
]),
},
});
});
});

describe('permissions on functions', () => {
test('without lambda:InvokeFunction', () => {
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