diff --git a/src/test/java/neqsim/thermo/util/empiric/BukacekWaterInGasTest.java b/src/test/java/neqsim/thermo/util/empiric/BukacekWaterInGasTest.java
new file mode 100644
index 0000000000..4f50148b14
--- /dev/null
+++ b/src/test/java/neqsim/thermo/util/empiric/BukacekWaterInGasTest.java
@@ -0,0 +1,21 @@
+package neqsim.thermo.util.empiric;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import org.junit.jupiter.api.Test;
+
+public class BukacekWaterInGasTest {
+  @Test
+  void testGetWaterInGas() {
+
+  }
+
+  @Test
+  void testWaterDewPointTemperature() {
+    assertEquals(-24.81413239, BukacekWaterInGas.waterDewPointTemperature(20.0e-6, 70.0) - 273.15,
+        0.001);
+    assertEquals(-1.1135250417,
+        BukacekWaterInGas.waterDewPointTemperature(2000.0e-6, 70.0) - 273.15, 0.01);
+    assertEquals(-1.1135250417,
+        BukacekWaterInGas.waterDewPointTemperature(20000.0e-6, 1.01) - 273.15);
+  }
+}