Add tests

tests/baselines/reference/restParamModifier.errors.txt

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+tests/cases/compiler/restParamModifier.ts(2,17): error TS2370: A rest parameter must be of an array type.
+tests/cases/compiler/restParamModifier.ts(2,27): error TS1005: '=' expected.
+tests/cases/compiler/restParamModifier.ts(2,27): error TS2304: Cannot find name 'rest'.
+tests/cases/compiler/restParamModifier.ts(2,31): error TS1005: ',' expected.
+tests/cases/compiler/restParamModifier.ts(2,39): error TS1005: '=' expected.
+
+
+==== tests/cases/compiler/restParamModifier.ts (5 errors) ====
+    class C {
+        constructor(...public rest: string[]) {}
+                    ~~~~~~~~~~~~~~
+!!! error TS2370: A rest parameter must be of an array type.
+                              ~~~~
+!!! error TS1005: '=' expected.
+                              ~~~~
+!!! error TS2304: Cannot find name 'rest'.
+                                  ~
+!!! error TS1005: ',' expected.
+                                          ~
+!!! error TS1005: '=' expected.
+    }

tests/baselines/reference/restParamModifier.js

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+//// [restParamModifier.ts]
+class C {
+    constructor(...public rest: string[]) {}
+}
+
+//// [restParamModifier.js]
+var C = (function () {
+    function C(public, string) {
+        if (string === void 0) { string = []; }
+    }
+    return C;
+})();

tests/baselines/reference/restParamModifier2.errors.txt

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+tests/cases/compiler/restParamModifier2.ts(2,24): error TS1005: ',' expected.
+
+
+==== tests/cases/compiler/restParamModifier2.ts (1 errors) ====
+    class C {
+        constructor(public ...rest: string[]) {}
+                           ~~~
+!!! error TS1005: ',' expected.
+    }

tests/baselines/reference/restParamModifier2.js

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+//// [restParamModifier2.ts]
+class C {
+    constructor(public ...rest: string[]) {}
+}
+
+//// [restParamModifier2.js]
+var C = (function () {
+    function C(public) {
+        var rest = [];
+        for (var _i = 1; _i < arguments.length; _i++) {
+            rest[_i - 1] = arguments[_i];
+        }
+    }
+    return C;
+})();

tests/cases/compiler/restParamModifier.ts

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+class C {
+    constructor(...public rest: string[]) {}
+}

tests/cases/compiler/restParamModifier2.ts

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+class C {
+    constructor(public ...rest: string[]) {}
+}