Sketch of using map table + map index if present for zxystream.

test/zxystream.js

@@ -20,6 +20,7 @@ tape('zxystream default batch', function(assert) {
     assert.deepEqual(stream.offset, 0, 'sets stream.offset = 0');
 
     stream.on('data', function(lines) {
+        assert.equal(stream.table, 'map');
         output += lines;
         called++;
     });
@@ -52,6 +53,7 @@ tape('zxystream batch = 10', function(assert) {
     assert.deepEqual(stream.offset, 0, 'sets stream.offset = 0');
 
     stream.on('data', function(lines) {
+        assert.equal(stream.table, 'map');
         output += lines;
         called++;
     });
@@ -73,6 +75,48 @@ tape('zxystream batch = 10', function(assert) {
     });
 });
 
+tape('zxystream unindexed', function(assert) {
+    new MBTiles(__dirname + '/fixtures/unindexed.mbtiles', function(err, s) {
+        assert.ifError(err);
+        source = s;
+        assert.end();
+    });
+});
+
+tape('zxystream unindexed zxystream', function(assert) {
+    var stream = source.createZXYStream();
+    var output = '';
+    var called = 0;
+
+    assert.deepEqual(stream.source, source, 'sets stream.source');
+    assert.deepEqual(stream.batch, 1000, 'sets stream.batch = 1000');
+    assert.deepEqual(stream.offset, 0, 'sets stream.offset = 0');
+
+    stream.on('data', function(lines) {
+        assert.equal(stream.table, 'tiles');
+        output += lines;
+        called++;
+    });
+    stream.on('end', function() {
+        var queue = output.toString().split('\n');
+        assert.equal(queue.length, 286);
+        assert.equal(called, 1, 'emitted data x27 times');
+        checkTile(queue);
+        function checkTile(queue) {
+            if (!queue.length) return assert.end();
+            var zxy = queue.shift();
+            if (!zxy) return checkTile(queue);
+            zxy = zxy.split('/');
+            source.getTile(zxy[0], zxy[1], zxy[2], function(err, buffer, headers) {
+                assert.equal(!err && (buffer instanceof Buffer), true, zxy.join('/') + ' exists');
+                checkTile(queue);
+            });
+        }
+    });
+});
+
+
+
 tape('zxystream empty', function(assert) {
     new MBTiles(__dirname + '/fixtures/non_existent.mbtiles', function(err, s) {
         assert.ifError(err);