Test that signature help doesn't show 'this'

tests/cases/fourslash/signatureHelpThis.ts

@@ -0,0 +1,43 @@
+/// <reference path='fourslash.ts' />
+////class Foo<T> {
+////    public implicitAny(n: number) {
+////    }
+////    public explicitThis(this: this, n: number) {
+////        console.log(this);
+////    }
+////    public explicitClass(this: Foo<T>, n: number) {
+////        console.log(this);
+////    }
+////}
+////
+////function implicitAny(x: number): void {
+////    return this;
+////}
+////function explicitVoid(this: void, x: number): void {
+////    return this;
+////}
+////function explicitLiteral(this: { n: number }, x: number): void {
+////    console.log(this);
+////}
+////let foo = new Foo<number>();
+////foo.implicitAny(/*1*/);
+////foo.explicitThis(/*2*/);
+////foo.explicitClass(/*3*/);
+////implicitAny(/*4*/12);
+////explicitVoid(/*5*/13);
+////let o = { n: 14, m: explicitLiteral };
+////o.m(/*6*/);
+
+
+goTo.marker('1');
+verify.currentParameterHelpArgumentNameIs("n");
+goTo.marker('2');
+verify.currentParameterHelpArgumentNameIs("n");
+goTo.marker('3');
+verify.currentParameterHelpArgumentNameIs("n");
+goTo.marker('4');
+verify.currentParameterHelpArgumentNameIs("x");
+goTo.marker('5');
+verify.currentParameterHelpArgumentNameIs("x");
+goTo.marker('6');
+verify.currentParameterHelpArgumentNameIs("x");