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feat: return clear error when multiple values for a cli flag are given

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* feat: return clear error when multiple values for a cli flag are given

* chore: change function signature

* test: add testcase for array type yargs parameter
This commit is contained in:
Arthur Joppart
2022-12-05 13:36:54 +01:00
committed by GitHub
parent c46d01d3d7
commit 5c79e60238
2 changed files with 28 additions and 0 deletions
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16
test/unit/init/cli/YargsCliExtractor.test.ts
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@@ -8,6 +8,7 @@ describe('A YargsCliExtractor', (): void => {
const parameters: YargsParameter[] = [
new YargsParameter('baseUrl', { alias: 'b', requiresArg: true, type: 'string' }),
new YargsParameter('port', { alias: 'p', requiresArg: true, type: 'number' }),
new YargsParameter('config', { alias: 'c', requiresArg: false, type: 'array' }),
];
let extractor: YargsCliExtractor;
@@ -52,6 +53,21 @@ describe('A YargsCliExtractor', (): void => {
expect(error).toHaveBeenCalledWith('Unknown argument: unsupported');
});
it('can error when multiple values are provided for a non array type parameter.', async(): Promise<void> => {
extractor = new YargsCliExtractor(parameters, { strictMode: true });
const argv = [ 'node', 'script', '-p', '3000', '-b', 'http://localhost:3000/', '-p', '3001' ];
await extractor.handle(argv);
expect(exit).toHaveBeenCalledTimes(1);
expect(error).toHaveBeenCalledWith('Multiple values for --port (-p) were provided where only one is allowed');
});
it('accepts multiple values for array type parameters.', async(): Promise<void> => {
const argv = [ 'node', 'script', '-c', './config/a.json', '-c', './config/b.json', '-b', 'http://localhost:3000/', '-p', '3000' ];
await expect(extractor.handle(argv)).resolves.toEqual(expect.objectContaining({
config: [ './config/a.json', './config/b.json' ],
}));
});
it('can parse environment variables.', async(): Promise<void> => {
// While the code below does go into the corresponding values,
// yargs does not see the new environment variable for some reason.