diff --git a/lib/rule-tester/rule-tester.js b/lib/rule-tester/rule-tester.js
index 83b91c45d56..9f8324a358f 100644
--- a/lib/rule-tester/rule-tester.js
+++ b/lib/rule-tester/rule-tester.js
@@ -130,7 +130,7 @@ function freezeDeeply(x) {
  */
 function sanitize(text) {
     return text.replace(
-        /[\u0000-\u001f]/gu, // eslint-disable-line no-control-regex
+        /[\u0000-\u0009|\u000b-\u001a]/gu, // eslint-disable-line no-control-regex
         c => `\\u${c.codePointAt(0).toString(16).padStart(4, "0")}`
     );
 }
diff --git a/tests/lib/rule-tester/rule-tester.js b/tests/lib/rule-tester/rule-tester.js
index 56e7ba65830..5c1dc017848 100644
--- a/tests/lib/rule-tester/rule-tester.js
+++ b/tests/lib/rule-tester/rule-tester.js
@@ -324,7 +324,11 @@ describe("RuleTester", () => {
                     "bar = baz;"
                 ],
                 invalid: [
-                    { code: "var foo = bar; var qux = boop;", output: null, errors: 2 }
+                    {
+                        code: "var foo = bar; var qux = boop;",
+                        output: null,
+                        errors: 2
+                    }
                 ]
             });
         }, /Expected no autofixes to be suggested/u);
@@ -1072,4 +1076,52 @@ describe("RuleTester", () => {
             );
         }, /A fatal parsing error occurred in autofix/u);
     });
+
+    describe("sanitize test cases", () => {
+        let originalRuleTesterIt;
+        let spyRuleTesterIt;
+
+        before(() => {
+            originalRuleTesterIt = RuleTester.it;
+            spyRuleTesterIt = sinon.spy();
+            RuleTester.it = spyRuleTesterIt;
+        });
+        after(() => {
+            RuleTester.it = originalRuleTesterIt;
+        });
+        beforeEach(() => {
+            spyRuleTesterIt.resetHistory();
+            ruleTester = new RuleTester();
+        });
+        it("should present newline when using back-tick as new line", () => {
+            const code = `
+            var foo = bar;`;
+
+            ruleTester.run("no-var", require("../../fixtures/testers/rule-tester/no-var"), {
+                valid: [],
+                invalid: [
+                    {
+                        code,
+                        errors: [/^Bad var/u]
+                    }
+                ]
+            });
+            sinon.assert.calledWith(spyRuleTesterIt, code);
+        });
+        it("should present \\u0000 as a string", () => {
+            const code = "\u0000";
+
+            ruleTester.run("no-var", require("../../fixtures/testers/rule-tester/no-var"), {
+                valid: [],
+                invalid: [
+                    {
+                        code,
+                        errors: [/^Bad var/u]
+                    }
+                ]
+            });
+            sinon.assert.calledWith(spyRuleTesterIt, "\\u0000");
+        });
+
+    });
 });