wasm/per-file: Link to the exact line for tests that have the info

(cherry picked from commit dcae67dc3dd6d7f7aaf534cf7639b8cf99688344)

Author: alimpfard

test262/per-file/main.js

@@ -238,7 +238,7 @@ function generateChildNode(childName, child, filepath) {
     child.aggregatedResults
   );
   childNode.querySelector(".tree-node-github-url").href =
-    window.config.generateGitHubURLFromTestPath(filepath);
+    window.config.generateGitHubURLFromTestPath(filepath, childName);
   return childNode;
 }
 

wasm/per-file/index.html

@@ -60,10 +60,12 @@ <h2>Per-file results</h2>
       window.config = {
         initialPathInTree: "Spec",
         loadPathsAndModes: [["wasm/per-file-master.json", "Default"]],
-        generateGitHubURLFromTestPath(filepath) {
+        generateGitHubURLFromTestPath(filepath, testName) {
           const result = /^Spec\/(.*)\.js\/[^:]*::(.*)*$/.exec(filepath);
           if (!result) return "";
-          return `https://github.com/WebAssembly/testsuite/blob/main/${result[1]}.wast`;
+          const lineNumber = /\(line (\d+)\)$/.exec(testName);
+          const line = lineNumber ? `#L${lineNumber[1]}` : "";
+          return `https://github.com/WebAssembly/testsuite/blob/main/${result[1]}.wast${line}`;
         },
       };
     </script>