Add test to verify third party service directory

Author: joostfunkekupper

oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/LicensesTask.groovy

@@ -107,9 +107,7 @@ class LicensesTask extends DefaultTask {
             }
         }
 
-        for (filename in thirdPartyLicenses.sort{it.getName().toLowerCase()}) {
-            addLicensesFromFile(filename)
-        }
+        addThirdPartyLicenses();
 
         writeMetadata()
     }
@@ -302,6 +300,12 @@ class LicensesTask extends DefaultTask {
         start += content.length
     }
 
+    protected void addThirdPartyLicenses() {
+        for (filename in thirdPartyLicenses.sort{it.getName().toLowerCase()}) {
+            addLicensesFromFile(filename)
+        }
+    }
+
     protected void writeMetadata() {
         for (entry in licensesMap) {
             licensesMetadata.append(entry.value, UTF_8)

oss-licenses-plugin/src/test/java/com/google/android/gms/oss/licenses/plugin/LicensesTaskTest.java

@@ -321,4 +321,20 @@ public void testDependenciesWithNameDuplicatedNames() throws IOException {
     assertTrue(licensesTask.licensesMap.containsKey("groupF:deps6"));
     assertTrue(licensesTask.licensesMap.containsKey("groupF:deps7"));
   }
+
+  @Test
+  public void testThirdPartyLicenses() throws IOException {
+    File thirdPartyLicensesDir = new File(BASE_DIR + "/thirdPartyLicenses");
+    File[] thirdPartyLicenses = thirdPartyLicensesDir.listFiles();
+    assert thirdPartyLicenses != null;
+    licensesTask.setThirdPartyLicenses(thirdPartyLicenses);
+    licensesTask.addThirdPartyLicenses();
+
+    String expected = "test" + LINE_BREAK;
+    String content = new String(Files.readAllBytes(thirdPartyLicenses[0].toPath()), UTF_8);
+
+    assertThat(licensesTask.licensesMap.size(), is(1));
+    assertTrue(licensesTask.licensesMap.containsKey("license1"));
+    assertEquals(expected, content);
+  }
 }

oss-licenses-plugin/src/test/resources/thirdPartyLicenses/license1

@@ -0,0 +1 @@
+test