more unit tests

src/test/java/co/comdor/github/ComdorYamlInputTestCase.java

@@ -62,6 +62,27 @@ public void readsArchitects() throws IOException {
         );
     }
 
+    /**
+     * ComdorYamlInput can read the labels list.
+     * @throws IOException If something goes wrong.
+     */
+    @Test
+    public void readsLabels() throws IOException {
+        final ComdorYaml comdor = new ComdorYamlInput(
+            new ByteArrayInputStream(
+                "docker: c/d\nlabels:\n  - 0.0.1\n  - 0.0.2".getBytes()
+            )
+        );
+        final List<String> labels = comdor.labels();
+        MatcherAssert.assertThat(labels, Matchers.hasSize(2));
+        MatcherAssert.assertThat(
+            labels.get(0), Matchers.equalTo("0.0.1")
+        );
+        MatcherAssert.assertThat(
+            labels.get(1), Matchers.equalTo("0.0.2")
+        );
+    }
+
     /**
      * ComdorYamlInput can tag the architects.
      * @throws IOException If something goes wrong.
@@ -142,4 +163,21 @@ public void missingArchitects() throws IOException {
             comdor.architects(), Matchers.iterableWithSize(0)
         );
     }
+
+    /**
+     * The labels' list is missing, so ComdorYamlInput returns an
+     * empty list.
+     * @throws IOException If something goes wrong.
+     */
+    @Test
+    public void missingLabels() throws IOException {
+        final ComdorYaml comdor = new ComdorYamlInput(
+            new ByteArrayInputStream(
+                "docker: a/b".getBytes()
+            )
+        );
+        MatcherAssert.assertThat(
+            comdor.labels(), Matchers.iterableWithSize(0)
+        );
+    }
 }

src/test/java/co/comdor/github/ComdorYamlRulesTestCase.java

@@ -142,4 +142,29 @@ public void returnsReadCommanders() {
         MatcherAssert.assertThat(cmd2, Matchers.iterableWithSize(2));
         MatcherAssert.assertThat(cmd2, Matchers.contains("amihaiemil", "joe"));
     }
+
+    /**
+     * Doesn't touch the labels' list. It returns it "as is".
+     */
+    @Test
+    public void returnsReadLabels() {
+        final ComdorYaml read = Mockito.mock(ComdorYaml.class);
+        Mockito.when(read.labels())
+            .thenReturn(new ArrayList<>())
+            .thenReturn(Arrays.asList(new String[]{"0.0.1"}))
+            .thenReturn(Arrays.asList(new String[]{"0.0.1", "0.0.2"}));
+
+        MatcherAssert.assertThat(
+            new ComdorYamlRules(read).labels(),
+            Matchers.iterableWithSize(0)
+        );
+
+        final List<String> arch1 = new ComdorYamlRules(read).labels();
+        MatcherAssert.assertThat(arch1, Matchers.iterableWithSize(1));
+        MatcherAssert.assertThat(arch1, Matchers.contains("0.0.1"));
+
+        final List<String> arch2 = new ComdorYamlRules(read).labels();
+        MatcherAssert.assertThat(arch2, Matchers.iterableWithSize(2));
+        MatcherAssert.assertThat(arch2, Matchers.contains("0.0.1", "0.0.2"));
+    }
 }