Update metrics.test.js

tests/metrics.test.js

@@ -97,12 +97,12 @@ const tests = []
 for (const name in metadata.plugins) {
   const cases = yaml
     .load(fs.readFileSync(path.join(__dirname, "../source/plugins", name, "tests.yml"), "utf8"))
-    .map(({ name: test, with: inputs, modes = [], timeout }) => {
+    ?.map(({ name: test, with: inputs, modes = [], timeout }) => {
       const skip = new Set(Object.entries(metadata.templates).filter(([_, { readme: { compatibility } }]) => !compatibility[name]).map(([template]) => template))
       if (!(metadata.plugins[name].supports.includes("repository")))
         skip.add("repository")
       return [test, inputs, { skip: [...skip], modes, timeout }]
-    })
+    }) ?? []
   tests.push(...cases)
 }