feat: output version when run in verbose mode

src/program.js

@@ -51,7 +51,9 @@ export class Program {
     return this;
   }
 
-  run({throwError=false, systemProcess=process, logStream=defaultLogStream}
+  run(absolutePackageDir: string,
+      {throwError=false, systemProcess=process, logStream=defaultLogStream,
+       getVersion=version}
       : Object = {}): Promise {
     let argv = this.yargs.argv;
     let cmd = argv._[0];
@@ -65,6 +67,7 @@ export class Program {
           throw new WebExtError(`unknown command: ${cmd}`);
         }
         if (argv.verbose) {
+          log.info('Version:', getVersion(absolutePackageDir));
           logStream.makeVerbose();
         }
         resolve(runCommand);
@@ -195,5 +198,5 @@ Example: $0 --help run.
       },
     });
 
-  return program.run(runOptions);
+  return program.run(absolutePackageDir, runOptions);
 }

tests/test.program.js

@@ -16,11 +16,13 @@ describe('program.Program', () => {
 
   function run(program, options={}) {
     let fakeProcess = fake(process);
-    return program.run({
-      systemProcess: fakeProcess,
-      throwError: true,
-      ...options,
-    });
+    let absolutePackageDir = path.join(__dirname, '..');
+    return program.run(
+      absolutePackageDir, {
+        systemProcess: fakeProcess,
+        throwError: true,
+        ...options,
+      });
   }
 
   it('executes a command callback', () => {
@@ -139,6 +141,16 @@ describe('program.Program', () => {
       });
   });
 
+  it('checks the version when verbose', () => {
+    let version = spy();
+    let program = new Program(['thing', '--verbose'])
+      .command('thing', 'does a thing', () => {});
+    return run(program, {getVersion: version})
+      .then(() => {
+        assert.equal(version.firstCall.args[0], path.join(__dirname, '..'));
+      });
+  });
+
   it('does not configure the logger unless verbose', () => {
     const logStream = fake(new ConsoleStream());
     let program = new Program(['thing']).command('thing', '', () => {});