30     ScreenHeadFusion fusion;  in TEST()  local
31     EXPECT_FALSE(fusion.calculate().has_value());  in TEST()
35     ScreenHeadFusion fusion;  in TEST()  local
36     fusion.setWorldToScreenPose(0, Pose3f());  in TEST()
37     EXPECT_FALSE(fusion.calculate().has_value());  in TEST()
41     ScreenHeadFusion fusion;  in TEST()  local
42     fusion.setWorldToHeadPose(0, Pose3f());  in TEST()
43     EXPECT_FALSE(fusion.calculate().has_value());  in TEST()
52     ScreenHeadFusion fusion;  in TEST()  local
53     fusion.setWorldToHeadPose(123, worldToHead1);  in TEST()
54     fusion.setWorldToScreenPose(456, worldToScreen1);  in TEST()
55     auto result = fusion.calculate();  in TEST()
60     fusion.setWorldToHeadPose(567, worldToHead2);  in TEST()
61     result = fusion.calculate();  in TEST()
66     fusion.setWorldToScreenPose(678, worldToScreen2);  in TEST()
67     result = fusion.calculate();  in TEST()