Add nested switch block testcase

Author: RyanCavanaugh

tests/baselines/reference/switchCaseTdz.errors.txt

@@ -19,9 +19,10 @@ tests/cases/compiler/switchCaseTdz.ts(46,13): error TS2837: Variable 'z' is decl
 tests/cases/compiler/switchCaseTdz.ts(50,13): error TS2837: Variable 'x' is declared in a prior case block.
 tests/cases/compiler/switchCaseTdz.ts(51,13): error TS2837: Variable 'y' is declared in a prior case block.
 tests/cases/compiler/switchCaseTdz.ts(52,13): error TS2837: Variable 'z' is declared in a prior case block.
+tests/cases/compiler/switchCaseTdz.ts(64,17): error TS2837: Variable 'x' is declared in a prior case block.
 
 
-==== tests/cases/compiler/switchCaseTdz.ts (21 errors) ====
+==== tests/cases/compiler/switchCaseTdz.ts (22 errors) ====
     switch (1 + 1) {
         case -1:
             x;
@@ -123,4 +124,15 @@ tests/cases/compiler/switchCaseTdz.ts(52,13): error TS2837: Variable 'z' is decl
             }
 
     }
-    
+    
+    switch(2 + 2) {
+        case 0:
+            let x = 1;
+            switch(x + x) {
+                case 2:
+                    // Legal
+                    x;
+                    ~
+!!! error TS2837: Variable 'x' is declared in a prior case block.
+            }
+    }

tests/baselines/reference/switchCaseTdz.js

@@ -55,7 +55,16 @@ switch (1 + 1) {
         }
 
 }
-
+
+switch(2 + 2) {
+    case 0:
+        let x = 1;
+        switch(x + x) {
+            case 2:
+                // Legal
+                x;
+        }
+}
 
 //// [switchCaseTdz.js]
 switch (1 + 1) {
@@ -109,3 +118,12 @@ switch (1 + 1) {
             ok;
         };
 }
+switch (2 + 2) {
+    case 0:
+        var x = 1;
+        switch (x + x) {
+            case 2:
+                // Legal
+                x;
+        }
+}

tests/baselines/reference/switchCaseTdz.symbols

@@ -123,3 +123,18 @@ switch (1 + 1) {
 
 }
 
+switch(2 + 2) {
+    case 0:
+        let x = 1;
+>x : Symbol(x, Decl(switchCaseTdz.ts, 59, 11))
+
+        switch(x + x) {
+>x : Symbol(x, Decl(switchCaseTdz.ts, 59, 11))
+>x : Symbol(x, Decl(switchCaseTdz.ts, 59, 11))
+
+            case 2:
+                // Legal
+                x;
+>x : Symbol(x, Decl(switchCaseTdz.ts, 59, 11))
+        }
+}

tests/baselines/reference/switchCaseTdz.types

@@ -155,3 +155,28 @@ switch (1 + 1) {
 
 }
 
+switch(2 + 2) {
+>2 + 2 : number
+>2 : 2
+>2 : 2
+
+    case 0:
+>0 : 0
+
+        let x = 1;
+>x : number
+>1 : 1
+
+        switch(x + x) {
+>x + x : number
+>x : number
+>x : number
+
+            case 2:
+>2 : 2
+
+                // Legal
+                x;
+>x : number
+        }
+}

tests/cases/compiler/switchCaseTdz.ts

@@ -54,3 +54,13 @@ switch (1 + 1) {
         }
 
 }
+
+switch(2 + 2) {
+    case 0:
+        let x = 1;
+        switch(x + x) {
+            case 2:
+                // Legal
+                x;
+        }
+}