From 97db46690094516a7de1367f32beff21dc968d10 Mon Sep 17 00:00:00 2001
From: Nitin Kumar <snitin315@gmail.com>
Date: Thu, 28 Oct 2021 07:16:30 -0700
Subject: [PATCH] test: add more cases for prefer-template rule

---
 lib/rules/prefer-template.js       |  4 ++--
 tests/lib/rules/prefer-template.js | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/lib/rules/prefer-template.js b/lib/rules/prefer-template.js
index 4e946b37664..fbd9b5ca339 100644
--- a/lib/rules/prefer-template.js
+++ b/lib/rules/prefer-template.js
@@ -203,8 +203,8 @@ module.exports = {
 
             if (isConcatenation(currentNode) && !hasIdentifierReference(currentNode)) {
 
-                // eslint-disable-next-line require-unicode-regexp -- `"Hello " + "World"` -> `Hello World`
-                const concatenatedText = sourceCode.getText(currentNode).split("+").map(e => e.trim()).join("").replace(/"/g, "");
+                // As there are no varibales used in this concatenation, we can sipmly calculate the concatenated string
+                const concatenatedText = sourceCode.getText(currentNode).split("+").map(e => e.trim().slice(1, -1)).join("");
 
                 return `\`${concatenatedText}\``;
             }
diff --git a/tests/lib/rules/prefer-template.js b/tests/lib/rules/prefer-template.js
index eea0255f1ac..ffb0cda86a9 100644
--- a/tests/lib/rules/prefer-template.js
+++ b/tests/lib/rules/prefer-template.js
@@ -223,6 +223,30 @@ ruleTester.run("prefer-template", rule, {
             code: "foo + '\\0'",
             output: "`${foo  }\\0`",
             errors
+        },
+
+        // https://github.com/eslint/eslint/issues/15083
+        {
+            code: "\"Hello \" + \"world \" + test",
+            output: "`Hello world ${  test}`",
+            errors
+        },
+        {
+            code: "var foo = \"Hello \" + \"world \" + \"another \" + test",
+            output: "var foo = `Hello world another ${  test}`",
+            errors
+        },
+        {
+            code: "\"Hello \" + \"'world' \" + test",
+            output: "`Hello 'world' ${  test}`",
+            errors
+        },
+        {
+            code: `"default-src 'self' https://*.google.com;"
+            + "frame-ancestors 'none';"
+            + "report-to " + test + ";"`,
+            output: "`default-src 'self' https://*.google.com;frame-ancestors 'none';report-to ${  test  };`",
+            errors
         }
     ]
 });