add test cases for armature

tests/reference-exports/just_armature.escn

@@ -0,0 +1,47 @@
+[gd_scene load_steps=1 format=2]
+
+
+[node type="Spatial" name="Scene"]
+
+
+[node name="Armature" type="Skeleton" parent="."]
+
+transform = Transform(  1.0, 0.0, -0.0, 0.0, 1.0, -0.0, -0.0, -0.0, 1.0, 0.0, 0.0, -0.0 )
+bones/0/name = "Bone"
+bones/0/parent = -1
+bones/0/rest = Transform(  1.0, 0.0, -0.0, 0.0, 0.0, -1.0, -0.0, 1.0, 0.0, 0.0, 0.0, -0.0 )
+bones/0/pose = Transform(  1.0, 0.0, -0.0, 0.0, 1.0, -0.0, -0.0, -0.0, 1.0, 0.0, 0.0, -0.0 )
+bones/0/enabled = true
+bones/1/name = "Bone.001"
+bones/1/parent = 0
+bones/1/rest = Transform(  -1.0, 8.742277657347586e-08, -0.0, 0.0, 0.0, -1.0, -8.742277657347586e-08, -1.0, 0.0, 0.0, 0.0, -1.0 )
+bones/1/pose = Transform(  1.0, 0.0, -0.0, 0.0, 1.0, -0.0, -0.0, -0.0, 1.0, 0.0, 0.0, -0.0 )
+bones/1/enabled = true
+bones/2/name = "Bone.002"
+bones/2/parent = 1
+bones/2/rest = Transform(  -1.0, -6.357302595461078e-08, -8.742277657347586e-08, 8.742277657347586e-08, -2.0850114102149812e-15, -1.0, 6.357302595461078e-08, -1.0, 0.0, 0.0, 0.0, -1.0 )
+bones/2/pose = Transform(  1.0, 0.0, -0.0, 0.0, 1.0, -0.0, -0.0, -0.0, 1.0, 0.0, 0.0, -0.0 )
+bones/2/enabled = true
+bones/3/name = "Bone.003"
+bones/3/parent = 0
+bones/3/rest = Transform(  0.0, 0.0, -0.9999999403953552, 1.0, -4.371138828673793e-08, -0.0, -4.371138828673793e-08, -1.0, 0.0, 0.0, 0.0, -1.0 )
+bones/3/pose = Transform(  1.0, 0.0, -0.0, 0.0, 1.0, -0.0, -0.0, -0.0, 1.0, 0.0, 0.0, -0.0 )
+bones/3/enabled = true
+
+[node name="Lamp" type="OmniLight" parent="."]
+
+omni_range = 29.999982833862305
+shadow_enabled = true
+light_color = Color( 1.0, 1.0, 1.0, 1.0 )
+transform = Transform(  -0.29086464643478394, -0.7711008191108704, 0.5663931369781494, -0.05518905818462372, 0.6045246720314026, 0.7946722507476807, -0.9551711678504944, 0.199883371591568, -0.21839118003845215, 4.076245307922363, 5.903861999511719, -1.0054539442062378 )
+light_negative = false
+light_specular = 1.0
+light_energy = 1.0
+
+[node name="Camera" type="Camera" parent="."]
+
+far = 100.0
+near = 0.10000000149011612
+projection = 0
+fov = 49.13434207760448
+transform = Transform(  0.6859206557273865, -0.32401350140571594, 0.6515582203865051, 0.0, 0.8953956365585327, 0.44527143239974976, -0.7276763319969177, -0.3054208755493164, 0.6141703724861145, 7.481131553649902, 5.34366512298584, 6.5076398849487305 )