add tests for gltf extensions

Author: ciscorn

tests/gltf_extensions.rs

@@ -0,0 +1,63 @@
+use std::io::BufReader;
+use std::io::Read;
+
+use serde::{Deserialize, Serialize};
+
+use cesiumtiles::gltf_extensions::gltf;
+use cesiumtiles::gltf_extensions::mesh;
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Gltf {
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub meshes: Vec<Mesh>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub extensions: Option<GltfExtension>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+#[serde[rename_all = "camelCase"]]
+pub struct Mesh {
+    pub primitives: Vec<MeshPrimitive>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+#[serde[rename_all = "camelCase"]]
+pub struct MeshPrimitive {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub extensions: Option<MeshPrimitiveExtension>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq, Clone)]
+pub struct MeshPrimitiveExtension {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "EXT_mesh_features")]
+    pub ext_mesh_features: Option<mesh::ext_mesh_features::ExtMeshFeatures>,
+
+    #[serde(skip_serializing_if = "Option::is_none")]
+    #[serde(rename = "EXT_structural_metadata")]
+    pub ext_structural_metadata: Option<mesh::ext_structural_metadata::ExtStructuralMetadata>,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default, PartialEq)]
+pub struct GltfExtension {
+    #[serde(rename = "EXT_structural_metadata")]
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ext_structural_metadata: Option<gltf::ext_structural_metadata::ExtStructuralMetadata>,
+}
+
+#[test]
+fn load_gltf_json() {
+    for path in glob::glob("./tests/samples/**/*.gltf").unwrap() {
+        let path = path.unwrap();
+        println!("loading {:?}", path);
+        let src = std::fs::read_to_string(path).unwrap();
+        let a: Gltf = serde_json::from_str(&src).unwrap();
+        let _ = format!("{:?}", a);
+
+        // 'null' should not appear in output
+        let a = serde_json::to_string(&a).unwrap();
+        assert!(!a.contains("null"));
+    }
+}