From 315b72d035a60ef23443c748032220dfc92ce222 Mon Sep 17 00:00:00 2001
From: Andy <anhans@microsoft.com>
Date: Wed, 31 May 2017 15:31:35 -0700
Subject: [PATCH] Use `it` instead of `describe` for tests (#16172)

* Use `it` instead of `describe` for tests

* Create SourceFiles lazily

* Use before() hooks
---
 src/harness/unittests/printer.ts | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/harness/unittests/printer.ts b/src/harness/unittests/printer.ts
index a9af46b2780..4bdafe04ba1 100644
--- a/src/harness/unittests/printer.ts
+++ b/src/harness/unittests/printer.ts
@@ -14,7 +14,9 @@ namespace ts {
 
         describe("printFile", () => {
             const printsCorrectly = makePrintsCorrectly("printsFileCorrectly");
-            const sourceFile = createSourceFile("source.ts", `
+            // Avoid eagerly creating the sourceFile so that `createSourceFile` doesn't run unless one of these tests is run.
+            let sourceFile: SourceFile;
+            before(() => sourceFile = createSourceFile("source.ts", `
                 interface A<T> {
                     // comment1
                     readonly prop?: T;
@@ -48,8 +50,7 @@ namespace ts {
 
                 // comment10
                 function functionWithDefaultArgValue(argument: string = "defaultValue"): void { }
-            `, ScriptTarget.ES2015);
-
+            `, ScriptTarget.ES2015));
             printsCorrectly("default", {}, printer => printer.printFile(sourceFile));
             printsCorrectly("removeComments", { removeComments: true }, printer => printer.printFile(sourceFile));
 
@@ -59,7 +60,8 @@ namespace ts {
 
         describe("printBundle", () => {
             const printsCorrectly = makePrintsCorrectly("printsBundleCorrectly");
-            const bundle = createBundle([
+            let bundle: Bundle;
+            before(() => bundle = createBundle([
                 createSourceFile("a.ts", `
                     /*! [a.ts] */
 
@@ -72,14 +74,15 @@ namespace ts {
                     // comment1
                     const b = 2;
                 `, ScriptTarget.ES2015)
-            ]);
+            ]));
             printsCorrectly("default", {}, printer => printer.printBundle(bundle));
             printsCorrectly("removeComments", { removeComments: true }, printer => printer.printBundle(bundle));
         });
 
         describe("printNode", () => {
             const printsCorrectly = makePrintsCorrectly("printsNodeCorrectly");
-            const sourceFile = createSourceFile("source.ts", "", ScriptTarget.ES2015);
+            let sourceFile: SourceFile;
+            before(() => sourceFile = createSourceFile("source.ts", "", ScriptTarget.ES2015));
             // tslint:disable boolean-trivia
             const syntheticNode = createClassDeclaration(
                 undefined,