fix(sdf): S12-A test_gradient — fix includes and remove Eigen gtest streaming

tests/sdf/test_sdf_gradient.cpp

@@ -2,8 +2,7 @@
 #include "vde/sdf/sdf_gradient.h"
 #include <cmath>
 #include <functional>
-#include <random>
-
+#include <vector>
 using namespace vde::sdf;
 using vde::core::Point3D;
 using vde::core::Vector3D;
@@ -213,7 +212,7 @@ TEST(SdfAnalytic, SphereAgreesWithFd) {
         Vector3D g_analytic = sphere_gradient_analytic(p, 2.0);
         Vector3D g_fd = gradient(f, p, FD_H);
         double diff = (g_analytic - g_fd).norm();
-        EXPECT_LT(diff, EPS_LOOSE) << " at point " << p.transpose();
+        EXPECT_LT(diff, EPS_LOOSE) ;
     }
 }
 
@@ -229,7 +228,7 @@ TEST(SdfAnalytic, BoxAgreesWithFd) {
         Vector3D g_fd = gradient([&](const Point3D& pt) { return box(pt, extents); }, p, FD_H);
         // Near edges/corners the analytic gradient differs from FD due to non-smoothness
         double diff = (g_analytic - g_fd).norm();
-        EXPECT_LT(diff, 0.5) << " at point " << p.transpose();
+        EXPECT_LT(diff, 0.5) ;
     }
 }
 
@@ -243,7 +242,7 @@ TEST(SdfAnalytic, TorusAgreesWithFd) {
         Vector3D g_analytic = torus_gradient_analytic(p, 2.0, 0.5);
         Vector3D g_fd = gradient(f, p, FD_H);
         double diff = (g_analytic - g_fd).norm();
-        EXPECT_LT(diff, EPS_LOOSE) << " at point " << p.transpose();
+        EXPECT_LT(diff, EPS_LOOSE) ;
     }
 }
 
@@ -257,7 +256,7 @@ TEST(SdfAnalytic, CylinderAgreesWithFd) {
         Vector3D g_analytic = cylinder_gradient_analytic(p, 1.0);
         Vector3D g_fd = gradient(f, p, FD_H);
         double diff = (g_analytic - g_fd).norm();
-        EXPECT_LT(diff, EPS_LOOSE) << " at point " << p.transpose();
+        EXPECT_LT(diff, EPS_LOOSE) ;
     }
 }
 
@@ -285,7 +284,7 @@ TEST(SdfAnalytic, CapsuleAgreesWithFd) {
         Vector3D g_analytic = capsule_gradient_analytic(p, a, b, 0.5);
         Vector3D g_fd = gradient(f, p, FD_H);
         double diff = (g_analytic - g_fd).norm();
-        EXPECT_LT(diff, EPS_LOOSE) << " at point " << p.transpose();
+        EXPECT_LT(diff, EPS_LOOSE) ;
     }
 }
 
@@ -528,7 +527,7 @@ TEST(SdfGradient, SphereGradientMagnitude) {
     };
     for (const auto& p : pts) {
         Vector3D g = gradient(f, p, FD_H);
-        EXPECT_NEAR(g.norm(), 1.0, EPS_LOOSE) << " at " << p.transpose();
+        EXPECT_NEAR(g.norm(), 1.0, EPS_LOOSE);
     }
 }
 
@@ -542,7 +541,7 @@ TEST(SdfGradient, BoxGradientMagnitudeOutside) {
     for (const auto& p : pts) {
         Vector3D g = gradient(f, p, FD_H);
         // Exterior gradients should have unit magnitude (away from edges)
-        EXPECT_NEAR(g.norm(), 1.0, 0.05) << " at " << p.transpose();
+        EXPECT_NEAR(g.norm(), 1.0, 0.05);
     }
 }
 
@@ -554,7 +553,7 @@ TEST(SdfGradient, TorusGradientMagnitude) {
     };
     for (const auto& p : pts) {
         Vector3D g = gradient(f, p, FD_H);
-        EXPECT_NEAR(g.norm(), 1.0, EPS_LOOSE) << " at " << p.transpose();
+        EXPECT_NEAR(g.norm(), 1.0, EPS_LOOSE);
     }
 }