SERVER-13441 getUser and getRole shell helpers shouldn't throw when user/role not found

(cherry picked from commit abf252cfe8833ab15dc8d62e8e05a30108484508)

4 files changed, 8 insertions, 8 deletions

diff --git a/jstests/auth/user_defined_roles_on_secondaries.js b/jstests/auth/user_defined_roles_on_secondaries.js
index eb51445616a..1ef357fb2d8 100644
--- a/jstests/auth/user_defined_roles_on_secondaries.js
+++ b/jstests/auth/user_defined_roles_on_secondaries.js
@@ -129,7 +129,7 @@ rstest.nodes.forEach(function (node) {
 // Verify that dropping roles propagates.
 rstest.getMaster().getDB("db1").dropRole("r2", { w: 2});
 rstest.nodes.forEach(function (node) {
-    assert.throws(function() { node.getDB("db1").getRole("r2") }, [], node);
+    assert.eq(null, node.getDB("db1").getRole("r2"));
     var role = node.getDB("db1").getRole("r3");
     assert.eq(1, role.roles.length, node);
     assertListContainsRole(role.roles, {role: "r1", db: "db1"}, node);
diff --git a/jstests/core/role_management_helpers.js b/jstests/core/role_management_helpers.js
index 1cb821975ef..761bd61e77b 100644
--- a/jstests/core/role_management_helpers.js
+++ b/jstests/core/role_management_helpers.js
@@ -123,15 +123,15 @@ function assertHasPrivilege(privilegeArray, privilege) {
 
      // Test dropRole
      db.dropRole('roleC');
-     assert.throws(function() {db.getRole('roleC')});
+     assert.eq(null, db.getRole('roleC'));
      roleObj = db.getRole("roleB", {showPrivileges: true});
      assert.eq(0, roleObj.privileges.length);
      assert.eq(0, roleObj.roles.length);
 
      // Test dropAllRoles
      db.dropAllRoles();
-     assert.throws(function() {db.getRole('roleA')});
-     assert.throws(function() {db.getRole('roleB')});
-     assert.throws(function() {db.getRole('roleC')});
+     assert.eq(null, db.getRole('roleA'));
+     assert.eq(null, db.getRole('roleB'));
+     assert.eq(null, db.getRole('roleC'));
 
 }(db));
\ No newline at end of file
diff --git a/jstests/core/user_management_helpers.js b/jstests/core/user_management_helpers.js
index 50707f584ab..b79f15e1816 100644
--- a/jstests/core/user_management_helpers.js
+++ b/jstests/core/user_management_helpers.js
@@ -65,7 +65,7 @@ function assertHasRole(rolesArray, roleName, roleDB) {
 
      // Test dropUser
      db.dropUser('andy');
-     assert.throws(function() {printjson(db.getUser('andy'));});
+     assert.eq(null, db.getUser('andy'));
 
      // Test dropAllUsers
      db.dropAllUsers()
diff --git a/src/mongo/shell/db.js b/src/mongo/shell/db.js
index d656a7703f8..e9572e7d8cb 100644
--- a/src/mongo/shell/db.js
+++ b/src/mongo/shell/db.js
@@ -1261,7 +1261,7 @@ DB.prototype.getUser = function(username, args) {
     }
 
     if (res.users.length == 0) {
-        throw Error("User " + username + "@" + db.getName() + " not found");
+        return null;
     }
     return res.users[0];
 }
@@ -1388,7 +1388,7 @@ DB.prototype.getRole = function(rolename, args) {
     }
 
     if (res.roles.length == 0) {
-        throw Error("Role " + rolename + "@" + db.getName() + " not found");
+        return null;
     }
     return res.roles[0];
 }