1 files changed, 41 insertions, 0 deletions
diff --git a/tests/particlebody_test.cpp b/tests/particlebody_test.cpp
new file mode 100644
index 00000000..5716d3ac
--- /dev/null
+++ b/tests/particlebody_test.cpp
@@ -0,0 +1,41 @@
+/** ---------------------------------------------------------------------------
+ * @file: test.cpp
+ *
+ * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
+ * MIT License, see LICENSE file for more details.
+ * ----------------------------------------------------------------------------
+ */
+
+#include <gtest/gtest.h>
+#include <yage/physics/particlebody.h>
+
+#include <cmath>
+#include <cstdlib>
+
+double gravityAcceleration(int iterations)
+{
+    yage::ParticleBody body;
+    for (int i = 0; i < 60 * iterations; ++i) {
+        body.update();
+    }
+
+    return body.yPosition();
+}
+
+// Tests
+
+TEST(ParticleBody, Gravity)
+{
+    int randomItr        = rand() % 10;
+    double idealPosition = 0.5 * -9.81 * std::pow(randomItr, 2);
+
+    ASSERT_GE(idealPosition * 0.95, gravityAcceleration(randomItr));
+    ASSERT_LE(idealPosition * 1.05, gravityAcceleration(randomItr));
+}
+
+int main(int argc, char **argv)
+{
+    testing::InitGoogleTest(&argc, argv);
+    srand(static_cast<unsigned>(time(nullptr)));
+    return RUN_ALL_TESTS();
+}