Add rest tests

tests/cases/conformance/types/rest/objectRest.ts

@@ -0,0 +1,33 @@
+// @target: es2015
+let o = { a: 1, b: 'no' }
+var { ...clone } = o;
+var { a, ...justB } = o;
+var { a, b: renamed, ...empty } = o;
+var { ['b']: renamed, ...justA } = o;
+var { 'b': renamed, ...justA } = o;
+var { b: { '0': n, '1': oooo }, ...justA } = o;
+
+let o2 = { c: 'terrible idea?', d: 'yes' };
+var { d: renamed, ...d } = o2;
+
+let nestedrest: { x: number, n1: { y: number, n2: { z: number, n3: { n4: number } } }, rest: number, restrest: number };
+var { x, n1: { y, n2: { z, n3: { ...nr } } }, ...restrest } = nestedrest;
+
+let complex: { x: { ka, ki }, y: number };
+var { x: { ka, ...nested }, y: other, ...rest } = complex;
+({x: { ka, ...nested }, y: other, ...rest} = complex);
+var { x, ...fresh } = { x: 1, y: 2 };
+({ x, ...fresh } = { x: 1, y: 2 });
+
+class Removable {
+    private x: number;
+    protected y: number;
+    set z(value: number) { }
+    get both(): number { return 12 }
+    set both(value: number) { }
+    m() { }
+    removed: string;
+    remainder: string;
+}
+var removable = new Removable();
+var { removed, ...removableRest } = removable;

tests/cases/conformance/types/rest/objectRestAssignment.ts

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+let x;
+let ka;
+let nested;
+let other;
+let rest;
+let complex: { x: { ka, ki }, y: number };
+({x: { ka, ...nested }, y: other, ...rest} = complex);

tests/cases/conformance/types/rest/objectRestForOf.ts

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+// @target: es2015
+let array: { x: number, y: string }[];
+for (let { x, ...restOf } of array) {
+    [x, restOf];
+}
+let xx: number;
+let rrestOff: { y: string };
+for ({ x: xx, ...rrestOff } of array ) {
+    [xx, rrestOff];
+}
+for (const norest of array.map(a => ({ ...a, x: 'a string' }))) {
+    [norest.x, norest.y];
+    // x is now a string. who knows why.
+}

tests/cases/conformance/types/rest/objectRestNegative.ts

@@ -0,0 +1,8 @@
+let o = { a: 1, b: 'no' };
+var { ...mustBeLast, a } = o;
+function stillMustBeLast({ ...mustBeLast, a }: { a: number, b: string }): void {
+}
+function generic<T extends { x, y }>(t: T) {
+    let { x, ...rest } = t;
+    return rest;
+}

tests/cases/conformance/types/rest/objectRestParameter.ts

@@ -0,0 +1,8 @@
+// @target: es2015
+function cloneAgain({ a, ...clone }: { a: number, b: string }): void {
+}
+
+declare function suddenly(f: (a: { x: { z, ka }, y: string }) => void);
+suddenly(({ x: a, ...rest }) => rest.y);
+suddenly(({ x: { z = 12, ...nested }, ...rest } = { x: { z: 1, ka: 1 }, y: 'noo' }) => rest.y + nested.ka);
+

tests/cases/fourslash/completionListForRest.ts

@@ -0,0 +1,13 @@
+/// <reference path='fourslash.ts'/>
+////interface Gen {
+////    x: number;
+////    parent: Gen;
+////    millenial: string;
+////}
+////let t: Gen;
+////var { x, ...rest } = t;
+////rest./*1*/x;
+goTo.marker('1');
+verify.memberListContains('parent', '(property) Gen.parent: Gen');
+verify.memberListContains('millenial', '(property) Gen.millenial: string');
+verify.memberListCount(2);

tests/cases/fourslash/findAllRefsForRest.ts

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+/// <reference path='fourslash.ts'/>
+////interface Gen {
+////    x: number
+////    [|parent|]: Gen;
+////    millenial: string;
+////}
+////let t: Gen;
+////var { x, ...rest } = t;
+////rest.[|parent|];
+const ranges = test.ranges();
+verify.referencesOf(ranges[0], ranges);
+verify.referencesOf(ranges[1], ranges);

tests/cases/fourslash/goToDefinitionRest.ts

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+
+/// <reference path='fourslash.ts'/>
+////interface Gen {
+////    x: number;
+////    /*1*/parent: Gen;
+////    millenial: string;
+////}
+////let t: Gen;
+////var { x, ...rest } = t;
+////rest./*2*/parent;
+const ranges = test.ranges();
+verify.goToDefinition('2', [ '1' ]);

tests/cases/fourslash/renameRest.ts

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+/// <reference path='fourslash.ts'/>
+////interface Gen {
+////    x: number;
+////    [|parent|]: Gen;
+////    millenial: string;
+////}
+////let t: Gen;
+////var { x, ...rest } = t;
+////rest.[|parent|];
+const ranges = test.ranges();
+verify.assertHasRanges(ranges);
+goTo.position(ranges[0].start);
+verify.renameLocations(/*findInStrings*/ false, /*findInComments*/ false, ranges);
+goTo.position(ranges[1].start);
+verify.renameLocations(/*findInStrings*/ false, /*findInComments*/ false, ranges);