1 files changed, 71 insertions, 0 deletions
diff --git a/src/test/java/org/traccar/handler/ComputedAttributesTest.java b/src/test/java/org/traccar/handler/ComputedAttributesTest.java
new file mode 100644
index 000000000..a76d8169b
--- /dev/null
+++ b/src/test/java/org/traccar/handler/ComputedAttributesTest.java
@@ -0,0 +1,71 @@
+package org.traccar.handler;
+
+import java.util.Date;
+
+import org.junit.Test;
+import org.traccar.config.Config;
+import org.traccar.model.Attribute;
+import org.traccar.model.Position;
+
+import static org.junit.Assert.assertEquals;
+
+public class ComputedAttributesTest {
+
+    @Test
+    public void testComputedAttributes() {
+
+        ComputedAttributesHandler handler = new ComputedAttributesHandler(new Config(), null, null);
+
+        Date date = new Date();
+        Position position = new Position();
+        position.setTime(date);
+        position.setSpeed(42);
+        position.setValid(false);
+        position.set("adc1", 128);
+        position.set("booleanFlag", true);
+        position.set("adc2", 100);
+        position.set("bitFlag", 7);
+        position.set("event", 42);
+        position.set("result", "success");
+        Attribute attribute = new Attribute();
+
+        attribute.setExpression("adc1");
+        assertEquals(128, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("!booleanFlag");
+        assertEquals(false, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("adc2 * 2 + 50");
+        assertEquals(250, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("(bitFlag & 4) != 0");
+        assertEquals(true, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("if (event == 42) \"lowBattery\"");
+        assertEquals("lowBattery", handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("speed > 5 && valid");
+        assertEquals(false, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("fixTime");
+        assertEquals(date, handler.computeAttribute(attribute, position));
+
+        attribute.setExpression("math:pow(adc1, 2)");
+        assertEquals(16384.0, handler.computeAttribute(attribute, position));
+
+        // modification tests
+        attribute.setExpression("adc1 = 256");
+        handler.computeAttribute(attribute, position);
+        assertEquals(128, position.getInteger("adc1"));
+
+        attribute.setExpression("result = \"fail\"");
+        handler.computeAttribute(attribute, position);
+        assertEquals("success", position.getString("result"));
+
+        attribute.setExpression("fixTime = \"2017-10-18 10:00:01\"");
+        handler.computeAttribute(attribute, position);
+        assertEquals(date, position.getFixTime());
+
+    }
+
+}