test: validate full error messages

test: changed test2 of test-vm-timeout.js so that entire error message
      would be matched in assert.throw.

      Before test 2 of test-vm-timeout.js would match any RangeError,
      now it looks specifically for the error message
      "RangeError: timeout must be a positive number"

test: changed test 3 of test-vm-timeout.js so that entire error message
      would be matched in assert.throw.

      Before test 3 of test-vm-timeout.js would match any RangeError,
      now it looks specifically for the error message
      "RangeError: timeout must be a positive number"

PR-URL: #13453
Refs: #13454
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Vse Mozhet Byt <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Yuta Hiroto <[email protected]>

test/parallel/test-vm-timeout.js

@@ -11,12 +11,12 @@ assert.throws(function() {
 // Test 2: Timeout must be >= 0ms
 assert.throws(function() {
   vm.runInThisContext('', { timeout: -1 });
-}, RangeError);
+}, /^RangeError: timeout must be a positive number$/);
 
 // Test 3: Timeout of 0ms
 assert.throws(function() {
   vm.runInThisContext('', { timeout: 0 });
-}, RangeError);
+}, /^RangeError: timeout must be a positive number$/);
 
 // Test 4: Timeout of 1000ms, script finishes first
 vm.runInThisContext('', { timeout: 1000 });