Check for key existence to identify junit file

Add junit identity test for empty junit file

Author: crammond

src/test_parser.ts

@@ -312,7 +312,7 @@ export async function parseFile(filename: string): Promise<TestResult> {
 
     const xml: any = await parser(data)
 
-    if (xml.testsuites || xml.testsuite) {
+    if ('testsuites' in xml || 'testsuite' in xml) {
         return await parseJunitXml(xml)
     }
 

test/file.ts

@@ -55,4 +55,11 @@ describe("file", async () => {
         expect(result.counts.failed).to.eql(4)
         expect(result.counts.skipped).to.eql(2)
     })
+
+    it("identifies empty junit", async () => {
+        const result = await parseFile(`${junitResourcePath}/05-empty.xml`)
+        expect(result.counts.passed).to.eql(0)
+        expect(result.counts.failed).to.eql(0)
+        expect(result.counts.skipped).to.eql(0)
+    })
 })