Add unit tests for Expiry class

concordium-sdk/src/test/java/com/concordium/sdk/transactions/ExpiryTest.java

@@ -0,0 +1,60 @@
+package com.concordium.sdk.transactions;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.Date;
+
+import org.junit.Test;
+
+import com.concordium.sdk.types.Timestamp;
+
+public class ExpiryTest {
+
+    @Test
+    public void testExpiryAddMinutes() {
+        Expiry expiry = Expiry.from(1);
+        long secondsIn5Minutes = 300;
+
+        Expiry result = expiry.addMinutes(5);
+
+        assertEquals(expiry.getValue().getValue() + secondsIn5Minutes, result.getValue().getValue());
+    }
+
+    @Test
+    public void testExpiryAddSeconds() {
+        Expiry expiry = Expiry.from(1);
+        int secondsToAdd = 1664115;
+
+        Expiry result = expiry.addSeconds(secondsToAdd);
+
+        assertEquals(expiry.getValue().getValue() + secondsToAdd, result.getValue().getValue());
+    }
+
+    @Test
+    public void testExpiryFromSeconds() {
+        long value = 1513;
+        Expiry expiry = Expiry.from(value);
+
+        assertEquals(value, expiry.getValue().getValue());
+    }
+
+    @Test
+    public void testExpiryFromDate() {
+        long valueInSeconds = 15605;
+        Date date = new Date(valueInSeconds * 1000);
+
+        Expiry expiry = Expiry.from(date);
+
+        assertEquals(valueInSeconds, expiry.getValue().getValue());
+    }
+
+    @Test
+    public void testExpiryFromTimestamp() {
+        long valueInSeconds = 51356;
+        Timestamp timestamp = Timestamp.newSeconds(valueInSeconds);
+
+        Expiry expiry = Expiry.from(timestamp);
+
+        assertEquals(valueInSeconds, expiry.getValue().getValue());
+    }
+}