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fix(ec2): Throw error on empty InitFile content (#13009) #13119

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Merged
mergify merged 5 commits into from
Feb 26, 2021
Merged

fix(ec2): Throw error on empty InitFile content (#13009) #13119

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bfd57f7
fix(ec2): Throw error on empty InitFile content (#13009)
mprencipe Feb 17, 2021
6d8770a
Merge branch 'master' into master
mprencipe Feb 22, 2021
17e9c84
fix(ec2): Use correct function in test, improve error message.
mprencipe Feb 25, 2021
f85d909
fix(ec2): Fix expectation in test
mprencipe Feb 25, 2021
77a7a37
Merge branch 'master' into master
mergify[bot] Feb 26, 2021
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3 changes: 3 additions & 0 deletions packages/@aws-cdk/aws-ec2/lib/cfn-init-elements.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -327,6 +327,9 @@ export abstract class InitFile extends InitElement {
* Use a literal string as the file content
*/
public static fromString(fileName: string, content: string, options: InitFileOptions = {}): InitFile {
if (!content) {
throw new Error(`InitFile ${fileName}: cannot create empty file. Please supply at least one character of content.`);
}
return new class extends InitFile {
protected _doBind(bindOptions: InitBindOptions) {
return {
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6 changes: 6 additions & 0 deletions packages/@aws-cdk/aws-ec2/test/cfn-init-element.test.ts
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Expand Up @@ -206,6 +206,12 @@ describe('InitFile', () => {
});
});

test('empty content string throws error', () => {
expect(() => {
ec2.InitFile.fromString('/tmp/foo', '');
}).toThrow('InitFile /tmp/foo: cannot create empty file. Please supply at least one character of content.');
});

test('symlink throws an error if mode is set incorrectly', () => {
expect(() => {
ec2.InitFile.symlink('/tmp/foo', '/tmp/bar', {
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