diff --git a/__tests__/no-new-statics.js b/__tests__/no-new-statics.js
index 4ced5e8..33ad0c1 100644
--- a/__tests__/no-new-statics.js
+++ b/__tests__/no-new-statics.js
@@ -53,18 +53,18 @@ ruleTester.run('no-new-statics', rule, {
       errors: [{ message: "Avoid calling 'new' on 'Promise.withResolvers()'" }],
     },
     {
-      code: [
-        'function foo() {',
-        '  var a = getA()',
-        '  return new Promise.resolve(a)',
-        '}',
-      ].join('\n'),
-      output: [
-        'function foo() {',
-        '  var a = getA()',
-        '  return Promise.resolve(a)',
-        '}',
-      ].join('\n'),
+      code: `
+        function foo() {
+          var a = getA()
+          return new Promise.resolve(a)
+        }
+      `,
+      output: `
+        function foo() {
+          var a = getA()
+          return Promise.resolve(a)
+        }
+      `,
       errors: [{ message: "Avoid calling 'new' on 'Promise.resolve()'" }],
     },
   ],
diff --git a/__tests__/valid-params.js b/__tests__/valid-params.js
index 5dd16e1..0993e35 100644
--- a/__tests__/valid-params.js
+++ b/__tests__/valid-params.js
@@ -78,16 +78,16 @@ ruleTester.run('valid-params', rule, {
     },
 
     // integration test
-    [
-      'Promise.all([',
-      '  Promise.resolve(1),',
-      '  Promise.resolve(2),',
-      '  Promise.reject(Error()),',
-      '])',
-      '  .then(console.log)',
-      '  .catch(console.error)',
-      '  .finally(console.log)',
-    ].join('\n'),
+    `
+      Promise.all([
+        Promise.resolve(1),
+        Promise.resolve(2),
+        Promise.reject(Error()),
+      ])
+        .then(console.log)
+        .catch(console.error)
+        .finally(console.log)
+    `,
   ],
   invalid: [
     // invalid Promise.resolve()