chenlin/Mujoco_WASM
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Return null pointer from mjs_firstChild and mjs_firstElement when the requested list is empty.

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Fixes #1824.

PiperOrigin-RevId: 653758711
Change-Id: I6ede762cafd88dcbb0dfc9c2999b7aee24bd2e2a
This commit is contained in:
Alessio Quaglino
2024-07-18 14:33:49 -07:00
committed by Copybara-Service
parent 384ed8097a
commit c198a69bbf
3 changed files with 41 additions and 23 deletions
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test/user/user_api_test.cc
+4
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@@ -75,6 +75,8 @@ TEST_F(MujocoTest, TreeTraversal) {
mjsSite* site3 = mjs_addSite(body, 0);
mjsGeom* geom3 = mjs_addGeom(body, 0);
mjsElement* a_el1 = mjs_firstElement(spec, mjOBJ_ACTUATOR);
mjsElement* c_el1 = mjs_firstChild(body, mjOBJ_CAMERA);
mjsElement* t_el1 = mjs_firstChild(body, mjOBJ_TENDON);
mjsElement* s_el1 = mjs_firstChild(body, mjOBJ_SITE);
mjsElement* s_el2 = mjs_nextChild(body, s_el1);
@@ -85,6 +87,8 @@ TEST_F(MujocoTest, TreeTraversal) {
mjsElement* g_el3 = mjs_nextChild(body, g_el2);
mjsElement* g_el4 = mjs_nextChild(body, g_el3);
EXPECT_EQ(a_el1, nullptr);
EXPECT_EQ(c_el1, nullptr);
EXPECT_EQ(t_el1, nullptr);
EXPECT_EQ(s_el1, site1->element);
EXPECT_EQ(s_el2, site2->element);