test(pack): select the requested package

tests/lib/npm-pack-output.js

@@ -3,19 +3,23 @@ function isPackEntry(value) {
 }
 
 function getNpmPackEntry(output, packageName) {
+  const matchesPackage = value => (
+    isPackEntry(value) && value.name === packageName
+  );
+
   if (Array.isArray(output)) {
-    return output.find(isPackEntry);
+    return output.find(matchesPackage);
   }
 
   if (!isPackEntry(output)) {
     return undefined;
   }
 
-  if (isPackEntry(output[packageName])) {
+  if (matchesPackage(output[packageName])) {
     return output[packageName];
   }
 
-  return Object.values(output).find(isPackEntry);
+  return Object.values(output).find(matchesPackage);
 }
 
 module.exports = { getNpmPackEntry };

tests/lib/npm-pack-output.test.js

@@ -18,6 +18,7 @@ function test(name, fn) {
 
 test('reads the npm 11 array response', () => {
   const entry = getNpmPackEntry([
+    { name: 'unrelated-package', filename: 'unrelated-package-1.0.0.tgz' },
     { name: 'ecc-universal', filename: 'ecc-universal-2.2.0.tgz' },
   ], 'ecc-universal');
 
@@ -35,10 +36,31 @@ test('reads the npm 12 package-keyed response', () => {
   assert.strictEqual(entry.filename, 'ecc-universal-2.2.0.tgz');
 });
 
+test('finds a requested package in a generic object response', () => {
+  const entry = getNpmPackEntry({
+    unrelated: { name: 'unrelated-package', filename: 'unrelated-package-1.0.0.tgz' },
+    target: { name: 'ecc-universal', filename: 'ecc-universal-2.2.0.tgz' },
+  }, 'ecc-universal');
+
+  assert.strictEqual(entry.filename, 'ecc-universal-2.2.0.tgz');
+});
+
 test('returns undefined for empty or malformed responses', () => {
   assert.strictEqual(getNpmPackEntry([], 'ecc-universal'), undefined);
   assert.strictEqual(getNpmPackEntry({}, 'ecc-universal'), undefined);
   assert.strictEqual(getNpmPackEntry(null, 'ecc-universal'), undefined);
+  assert.strictEqual(
+    getNpmPackEntry([
+      { name: 'unrelated-package', filename: 'unrelated-package-1.0.0.tgz' },
+    ], 'ecc-universal'),
+    undefined
+  );
+  assert.strictEqual(
+    getNpmPackEntry({
+      unrelated: { name: 'unrelated-package', filename: 'unrelated-package-1.0.0.tgz' },
+    }, 'ecc-universal'),
+    undefined
+  );
 });
 
 console.log(`\nPassed: ${passed}`);