chore(test): add ASI script test (#592)

This verifies that the behavior is the same as in the old shell.

Author: addaleax

packages/cli-repl/test/e2e.spec.ts

@@ -416,6 +416,16 @@ describe('e2e', function() {
         shell.assertContainsOutput("{ _id: 'xyz', totalSaleAmount: 150 }");
       });
     });
+
+    it('treats piping a script into stdin line by line', async() => {
+      // This script doesn't work if evaluated as a whole, only when evaluated
+      // line-by-line, due to Automatic Semicolon Insertion (ASI).
+      createReadStream(path.resolve(__dirname, 'fixtures', 'asi-script.js'))
+        .pipe(shell.process.stdin);
+      await eventually(() => {
+        shell.assertContainsOutput('admin;system.version;');
+      });
+    });
   });
 
   describe('Node.js builtin APIs in the shell', () => {

packages/cli-repl/test/fixtures/asi-script.js

@@ -0,0 +1,12 @@
+/* eslint-disable */
+print("Database Name;Collection Name;Documents;Documents Size;Documents Avg;Indexes;Index Size;Index Avg")
+db.getSiblingDB('admin').runCommand({ listDatabases: 1, nameOnly: true }).databases.forEach(function (d) {
+    if ( ["local", "config"].indexOf(d.name) > -1 ) { return; }
+    var curr_db = db.getSiblingDB(d.name);
+    curr_db.getCollectionNames().forEach(function(coll) {
+        var c = curr_db.getCollection(coll);
+        if ( typeof c != "function") {
+    	    print(d.name + ";" + coll + ";" + c.stats().count + ";" + c.stats().size + ";" + c.stats().avgObjSize + ";" + c.stats().nindexes + ";" + c.stats().totalIndexSize + ";" + c.stats().totalIndexSize / c.stats().nindexes);
+        }
+    });
+});