Merge pull request #113 from touchlab/conradev-empty-blobs

Conradev empty blobs

Author: kpgalligan

sqliter-driver/src/nativeCommonTest/kotlin/co/touchlab/sqliter/NativeStatementTest.kt

@@ -218,31 +218,33 @@ class NativeStatementTest : BaseDatabaseTest(){
         }
     }
 
-    val TWO_COL_WITH_BLOB = "CREATE TABLE test (num INTEGER NOT NULL, " +
-            "blb BLOB NOT NULL)"
+    val THREE_COL_WITH_BLOB = "CREATE TABLE test (num INTEGER NOT NULL, " +
+            "blb BLOB NOT NULL, null_blb BLOB)"
 
     @Test
     fun bindEmptyBlob() {
-        basicTestDb(TWO_COL_WITH_BLOB) {
+        basicTestDb(THREE_COL_WITH_BLOB) {
             it.withConnection {
-                it.withStatement("insert into test(num, blb)values(?,?)") {
+                it.withStatement("insert into test(num, blb, null_blb)values(?,?,?)") {
                     bindLong(1, 22)
-                    bindBlob(2, ByteArray(0){it.toByte()})
+                    bindBlob(2, byteArrayOf())
+                    bindBlob(3, null)
                     executeInsert()
                 }
 
-                it.withStatement("select blb from test") {
+                it.withStatement("select blb, null_blb from test") {
                     val query = query()
                     query.next()
                     assertEquals(query.getBytes(query.columnNames["blb"]!!).size, 0)
+                    assertEquals(query.getBytesOrNull(query.columnNames["null_blb"]!!), null)
                 }
             }
         }
     }
 
     @Test
     fun bindBlob() {
-        basicTestDb(TWO_COL_WITH_BLOB) {
+        basicTestDb(THREE_COL_WITH_BLOB) {
             it.withConnection {
                 it.withTransaction {
                     it.withStatement("insert into test(num, blb)values(?,?)") {