Add some tests to the OsisParser

Testing state machines can be difficult if it's not black box...

app/src/androidTest/java/org/bspeice/minimalbible/test/format/osisparser/OsisParserTest.java

@@ -0,0 +1,51 @@
+package org.bspeice.minimalbible.test.format.osisparser;
+
+import android.annotation.SuppressLint;
+
+import org.bspeice.minimalbible.MBTestCase;
+import org.bspeice.minimalbible.service.format.osisparser.OsisParser;
+import org.crosswire.jsword.book.OSISUtil;
+import org.xml.sax.Attributes;
+
+import static org.mockito.Mockito.mock;
+
+/**
+ * State machine testing, oh boy!
+ */
+public class OsisParserTest extends MBTestCase {
+
+    OsisParser parser;
+
+    public void setUp() {
+        parser = new OsisParser(null);
+    }
+
+    @SuppressLint("NewApi")
+    public void testDoWriteEnabledVerse() {
+        Attributes attributes = mock(Attributes.class);
+        parser.startElement("", OSISUtil.OSIS_ELEMENT_VERSE, "", attributes);
+        assertTrue(parser.getDoWrite().peek());
+    }
+
+    @SuppressLint("NewApi")
+    private void parserAssert(OsisParser parser, String element) {
+        Attributes attributes = mock(Attributes.class);
+        parser.startElement("", element, "", attributes);
+        assertFalse(parser.getDoWrite().isEmpty());
+        parser.getDoWrite().pop();
+    }
+
+    public void testDoWriteAlwaysAdded() {
+        parserAssert(parser, OSISUtil.OSIS_ELEMENT_VERSE);
+        parserAssert(parser, "");
+        parserAssert(parser, "random string");
+        parserAssert(parser, OSISUtil.OSIS_ELEMENT_CELL);
+    }
+
+    @SuppressLint("NewApi")
+    public void testEndElementPopsQueue() {
+        parser.getDoWrite().add(true);
+        parser.endElement("", "", "");
+        assertTrue(parser.getDoWrite().isEmpty());
+    }
+}

app/src/main/kotlin/org/bspeice/minimalbible/service/format/osisparser/OsisParser.kt

@@ -10,30 +10,29 @@ import org.crosswire.jsword.book.OSISUtil
  * Created by bspeice on 9/10/14.
  */
 
-class OsisParser(v: Verse) : DefaultHandler() {
+class OsisParser(v: Verse?) : DefaultHandler() {
 
-    val verseContent = VerseContent(v)
+    val verseContent: VerseContent? = when (v) {
+        is Verse -> VerseContent(v) // not null
+        else -> null
+    }
+    // TODO: Implement a stack to keep min API 8
     val doWrite = ArrayDeque<Boolean>()
 
-    // Android Studio complains about compilation, but the method
-    // has @NotNull annotations, so we program for those.
     override fun startElement(uri: String, localName: String,
                               qName: String, attributes: Attributes) {
         when (localName) {
             OSISUtil.OSIS_ELEMENT_VERSE -> doWrite.push(true)
-            else -> {
+            else -> doWrite.push(false)
-                doWrite.push(false)
-            }
         }
     }
 
-    // Android Studio complains about compilation, but the method
+    override fun endElement(uri: String, localName: String, qName: String) {
-    // has @NotNull annotations, so we program for those.
-    override fun endElement(uri: String?, localName: String, qName: String) {
         doWrite.pop()
     }
-    override fun characters(ch: CharArray?, start: Int, length: Int) {
+
+    override fun characters(ch: CharArray, start: Int, length: Int) {
         if (doWrite.peek())
-            verseContent.appendContent(String(ch as CharArray))
+            verseContent?.appendContent(String(ch))
     }
 }

app/src/main/kotlin/org/bspeice/minimalbible/service/format/osisparser/VerseReference.kt

@@ -6,7 +6,4 @@ import org.crosswire.jsword.passage.Verse
  * Created by bspeice on 9/9/14.
  */
 
-class VerseReference(verse: Verse, index: Int) {
+class VerseReference(val verse: Verse, val index: Int) {}
-    val verse: Verse = verse
-    val index: Int = index
-}