Added block walker implementations + tests

tests/test_tracer.py

@@ -1,15 +1,19 @@
+import collections
 import logging
 
+from blender_asset_tracer import tracer, blendfile
 from abstract_test import AbstractBlendFileTest
 
-from blender_asset_tracer import tracer, blendfile
+# Mimicks a BlockUsage, but without having to set the block to an expected value.
+Expect = collections.namedtuple(
+    'Expect',
+    'type full_field dirname_field basename_field asset_path is_sequence')
 
 
 class AbstractTracerTest(AbstractBlendFileTest):
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
-        logging.basicConfig(level=logging.INFO)
         logging.getLogger('blender_asset_tracer.tracer').setLevel(logging.DEBUG)
 
 
@@ -56,11 +60,97 @@ class AssetHoldingBlocksTest(AbstractTracerTest):
         self.assertEqual(37, blocks_seen)
 
 
-class DepsTest(AbstractBlendFileTest):
+class DepsTest(AbstractTracerTest):
+
+    def assert_deps(self, blend_fname, expects):
+        for dep in tracer.deps(self.blendfiles / blend_fname):
+            exp = expects[dep.block_name]
+            self.assertEqual(exp.type, dep.block.dna_type.dna_type_id.decode())
+            self.assertEqual(exp.asset_path, dep.asset_path)
+            self.assertEqual(exp.is_sequence, dep.is_sequence)
+
+            if exp.full_field is not None:
+                self.assertEqual(exp.full_field, dep.path_full_field.name.name_full.decode())
+            if exp.dirname_field is not None:
+                self.assertEqual(exp.dirname_field, dep.path_dir_field.name.name_full.decode())
+            if exp.basename_field is not None:
+                self.assertEqual(exp.basename_field, dep.path_base_field.name.name_full.decode())
+
+            del expects[dep.block_name]  # should be seen only once
+        # All expected uses should have been seen.
+        self.assertEqual({}, expects)
+
     def test_no_deps(self):
-        for dep in tracer.deps(self.blendfiles / 'basic_file.blend'):
-            self.fail(dep)
+        self.assert_deps('basic_file.blend', {})
 
     def test_ob_mat_texture(self):
-        for dep in tracer.deps(self.blendfiles / 'material_textures.blend'):
-            self.fail(repr(dep))
+        expects = {
+            b'IMbrick_dotted_04-bump': Expect(
+                'Image', 'name[1024]', None, None,
+                b'//textures/Bricks/brick_dotted_04-bump.jpg', False),
+            b'IMbrick_dotted_04-color': Expect(
+                'Image', 'name[1024]', None, None,
+                b'//textures/Bricks/brick_dotted_04-color.jpg', False),
+            # This data block is in there, but the image is packed, so it
+            # shouldn't be in the results.
+            # b'IMbrick_dotted_04-specular': Expect(
+            #     'Image', 'name[1024]', None, None,
+            #     b'//textures/Bricks/brick_dotted_04-specular.jpg', False),
+            b'IMbuildings_roof_04-color': Expect(
+                'Image', 'name[1024]', None, None,
+                b'//textures/Textures/Buildings/buildings_roof_04-color.png', False),
+        }
+        self.assert_deps('material_textures.blend', expects)
+
+    def test_seq_image_sequence(self):
+        expects = {
+            b'SQ000210.png': Expect(
+                'Sequence', None, 'dir[768]', 'name[256]', b'//imgseq/000210.png', True),
+            b'SQvideo-tiny.mkv': Expect(
+                'Sequence', None, 'dir[768]', 'name[256]',
+                b'//../../../../cloud/pillar/testfiles/video-tiny.mkv', False),
+
+            # The sound will be referenced twice, from the sequence strip and an SO data block.
+            b'SQvideo-tiny.001': Expect(
+                'Sequence', None, 'dir[768]', 'name[256]',
+                b'//../../../../cloud/pillar/testfiles/video-tiny.mkv', False),
+            b'SOvideo-tiny.mkv': Expect(
+                'bSound', 'name[1024]', None, None,
+                b'//../../../../cloud/pillar/testfiles/video-tiny.mkv', False),
+        }
+        self.assert_deps('image_sequencer.blend', expects)
+
+    def test_block_cf(self):
+        self.assert_deps('alembic-user.blend', {
+            b'CFclothsim.abc': Expect('CacheFile', 'filepath[1024]', None, None,
+                                      b'//clothsim.abc', False),
+        })
+
+    def test_block_mc(self):
+        self.assert_deps('movieclip.blend', {
+            b'MCvideo.mov': Expect('MovieClip', 'name[1024]', None, None,
+                                   b'//../../../../cloud/pillar/testfiles/video.mov', False),
+        })
+
+    def test_block_me(self):
+        self.assert_deps('multires_external.blend', {
+            b'MECube': Expect('Mesh', 'filename[1024]', None, None, b'//Cube.btx', False),
+        })
+
+    def test_ocean(self):
+        self.assert_deps('ocean_modifier.blend', {
+            b'OBPlane.modifiers[0]': Expect('OceanModifierData', 'cachepath[1024]', None, None,
+                                            b'//cache_ocean', True),
+        })
+
+    def test_mesh_cache(self):
+        self.assert_deps('meshcache-user.blend', {
+            b'OBPlane.modifiers[0]': Expect('MeshCacheModifierData', 'filepath[1024]', None, None,
+                                            b'//meshcache.mdd', False),
+        })
+
+    def test_block_vf(self):
+        self.assert_deps('with_font.blend', {
+            b'VFHack-Bold': Expect('VFont', 'name[1024]', None, None,
+                                   b'/usr/share/fonts/truetype/hack/Hack-Bold.ttf', False),
+        })