FeeFilterMessageTest: add tests for FeeFilterMessage

core/src/test/java/org/bitcoinj/core/FeeFilterMessageTest.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright by the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.bitcoinj.core;
+
+import junitparams.JUnitParamsRunner;
+import junitparams.Parameters;
+import org.bitcoinj.base.Coin;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Test FeeFilterMessage
+ */
+@RunWith(JUnitParamsRunner.class)
+public class FeeFilterMessageTest {
+    @Test
+    @Parameters(method = "validFeeRates")
+    public void roundTripValid(Coin feeRate) {
+        byte[] buf = ByteBuffer.allocate(Long.BYTES).order(ByteOrder.LITTLE_ENDIAN).putLong(feeRate.getValue()).array();
+        FeeFilterMessage ffm = FeeFilterMessage.read(ByteBuffer.wrap(buf));
+        assertEquals(feeRate, ffm.getFeeRate());
+
+        byte[] serialized = ffm.bitcoinSerialize();
+        FeeFilterMessage ffm2 = FeeFilterMessage.read(ByteBuffer.wrap(serialized));
+        assertEquals(feeRate, ffm2.getFeeRate());
+    }
+
+    @Test(expected = ProtocolException.class)
+    @Parameters(method = "invalidFeeRates")
+    public void invalid(Coin feeRate) {
+        byte[] buf = ByteBuffer.allocate(Long.BYTES).order(ByteOrder.LITTLE_ENDIAN).putLong(feeRate.getValue()).array();
+        FeeFilterMessage ffm = FeeFilterMessage.read(ByteBuffer.wrap(buf));
+    }
+
+    private Coin[] validFeeRates() {
+        return new Coin[] { Coin.ZERO, Coin.SATOSHI, Coin.FIFTY_COINS, Coin.valueOf(Long.MAX_VALUE) };
+    }
+
+    private Coin[] invalidFeeRates() {
+        return new Coin[] { Coin.NEGATIVE_SATOSHI, Coin.valueOf(Integer.MIN_VALUE), Coin.valueOf(Long.MIN_VALUE) };
+    }
+}