feat(build): add --lang flag to set LANG env var for lb-mocha

This allow tests to be executed with a given language.
loopbackio · Feb 26, 2020 · a78bb84 · a78bb84
1 parent 501bd78
commit a78bb84
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diff --git a/packages/build/bin/run-mocha.js b/packages/build/bin/run-mocha.js
@@ -52,6 +52,13 @@ function run(argv, options) {
     mochaOpts.splice(allowConsoleLogsIx, 1);
   }
 
+  // Allow `--lang en_US.UTF-8`
+  const lang = mochaOpts.indexOf('--lang');
+  if (lang !== -1) {
+    process.env.LANG = mochaOpts[lang + 1];
+    mochaOpts.splice(lang, 2);
+  }
+
   const args = [...mochaOpts];
 
   return utils.runCLI('mocha/bin/mocha', args, options);

diff --git a/packages/build/test/integration/scripts.integration.js b/packages/build/test/integration/scripts.integration.js
@@ -266,6 +266,18 @@ describe('mocha', function() {
     );
   });
 
+  it('honors --lang option', () => {
+    const LANG = process.env.LANG;
+    const run = require('../../bin/run-mocha');
+    const command = run(
+      ['node', 'bin/run-mocha', '--lang', 'fr', '"dist/__tests__"'],
+      true,
+    );
+    assert.equal(process.env.LANG, 'fr');
+    assert(command.indexOf('--lang fr') === -1, '--lang fr should be removed');
+    process.env.LANG = LANG;
+  });
+
   it('loads .mocharc.json specific project file', () => {
     const run = require('../../bin/run-mocha');
     const buitInMochaOptsPath = path.join(