Adding test

tests/cases/conformance/types/intersection/operatorsAndIntersectionTypes.ts

@@ -0,0 +1,30 @@
+type Guid = string & { $Guid };          // Tagged string type
+type SerialNo = number & { $SerialNo };  // Tagged number type
+
+function createGuid() {
+    return "21EC2020-3AEA-4069-A2DD-08002B30309D" as Guid;
+}
+
+function createSerialNo() {
+    return 12345 as SerialNo;
+}
+
+let map1: { [x: string]: number } = {};
+let guid = createGuid();
+map1[guid] = 123;  // Can with tagged string
+
+let map2: { [x: number]: string } = {};
+let serialNo = createSerialNo();
+map2[serialNo] = "hello";  // Can index with tagged number
+
+const s1 = "{" + guid + "}";
+const s2 = guid.toLowerCase();
+const s3 = guid + guid;
+const s4 = guid + serialNo;
+const s5 = serialNo.toPrecision(0);
+const n1 = serialNo * 3;
+const n2 = serialNo + serialNo;
+const b1 = guid === "";
+const b2 = guid === guid;
+const b3 = serialNo === 0;
+const b4 = serialNo === serialNo;