Added tests, pr feedback

src/services/codefixes/importFixes.ts

@@ -439,18 +439,19 @@ namespace ts.codefix {
 
                 function getSingleQuoteStyleFromExistingImports() {
                     const firstModuleSpecifier = forEach(sourceFile.statements, node => {
-                        switch (node.kind) {
-                            case SyntaxKind.ImportDeclaration:
-                                return (<ImportDeclaration>node).moduleSpecifier;
-                            case SyntaxKind.ImportEqualsDeclaration:
-                                const moduleReference = (<ImportEqualsDeclaration>node).moduleReference;
-                                return moduleReference.kind === SyntaxKind.ExternalModuleReference ? moduleReference.expression : undefined;
-                            case SyntaxKind.ExportDeclaration:
-                                return (<ExportDeclaration>node).moduleSpecifier;
+                        if (isImportDeclaration(node) || isExportDeclaration(node)) {
+                            if (node.moduleSpecifier && isStringLiteral(node.moduleSpecifier)) {
+                                return node.moduleSpecifier;
+                            }
+                        }
+                        else if (isImportEqualsDeclaration(node)) {
+                            if (isExternalModuleReference(node.moduleReference) && isStringLiteral(node.moduleReference.expression)) {
+                                return node.moduleReference.expression;
+                            }
                         }
                     });
-                    if (firstModuleSpecifier && isStringLiteral(firstModuleSpecifier)) {
-                        return sourceFile.text.charCodeAt(skipTrivia(sourceFile.text, firstModuleSpecifier.pos)) === CharacterCodes.singleQuote;
+                    if (firstModuleSpecifier) {
+                        return sourceFile.text.charCodeAt(firstModuleSpecifier.getStart()) === CharacterCodes.singleQuote;
                     }
                 }
 

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyle0.ts

@@ -4,16 +4,15 @@
 ////
 //// f1/*0*/();|]
 
-// @Filename: module.ts
+// @Filename: module1.ts
 //// export function f1() {}
-//// export var v1 = 5;
 
 // @Filename: module2.ts
 //// export var v2 = 6;
 
 verify.importFixAtPosition([
 `import { v2 } from './module2';
-import { f1 } from './module';
+import { f1 } from './module1';
 
 f1();`
 ]);

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyle1.ts

@@ -0,0 +1,18 @@
+/// <reference path="fourslash.ts" />
+
+//// [|import { v2 } from "./module2";
+////
+//// f1/*0*/();|]
+
+// @Filename: module1.ts
+//// export function f1() {}
+
+// @Filename: module2.ts
+//// export var v2 = 6;
+
+verify.importFixAtPosition([
+`import { v2 } from "./module2";
+import { f1 } from "./module1";
+
+f1();`
+]);

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyle2.ts

@@ -0,0 +1,18 @@
+/// <reference path="fourslash.ts" />
+
+//// [|import m2 = require('./module2');
+////
+//// f1/*0*/();|]
+
+// @Filename: module1.ts
+//// export function f1() {}
+
+// @Filename: module2.ts
+//// export var v2 = 6;
+
+verify.importFixAtPosition([
+`import m2 = require('./module2');
+import { f1 } from './module1';
+
+f1();`
+]);

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyle3.ts

@@ -0,0 +1,19 @@
+/// <reference path="fourslash.ts" />
+
+//// [|export { v2 } from './module2';
+////
+//// f1/*0*/();|]
+
+// @Filename: module1.ts
+//// export function f1() {}
+
+// @Filename: module2.ts
+//// export var v2 = 6;
+
+verify.importFixAtPosition([
+`import { f1 } from './module1';
+
+export { v2 } from './module2';
+
+f1();`
+]);

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyleMixed0.ts

@@ -0,0 +1,23 @@
+/// <reference path="fourslash.ts" />
+
+//// [|import { v2 } from "./module2";
+//// import { v3 } from './module3';
+////
+//// f1/*0*/();|]
+
+// @Filename: module1.ts
+//// export function f1() {}
+
+// @Filename: module2.ts
+//// export var v2 = 6;
+
+// @Filename: module3.ts
+//// export var v3 = 6;
+
+verify.importFixAtPosition([
+`import { v2 } from "./module2";
+import { v3 } from './module3';
+import { f1 } from "./module1";
+
+f1();`
+]);

tests/cases/fourslash/importNameCodeFixNewImportFileQuoteStyleMixed1.ts

@@ -0,0 +1,23 @@
+/// <reference path="fourslash.ts" />
+
+//// [|import { v2 } from './module2';
+//// import { v3 } from "./module3";
+////
+//// f1/*0*/();|]
+
+// @Filename: module1.ts
+//// export function f1() {}
+
+// @Filename: module2.ts
+//// export var v2 = 6;
+
+// @Filename: module3.ts
+//// export var v3 = 6;
+
+verify.importFixAtPosition([
+`import { v2 } from './module2';
+import { v3 } from "./module3";
+import { f1 } from './module1';
+
+f1();`
+]);