Added JUnit tests for TxHandler#isValid(Transaction tx) method

keskival · Apr 30, 2017 · a5dcf2f · a5dcf2f
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diff --git a/assignment1/test/IsValidTest.java b/assignment1/test/IsValidTest.java
@@ -0,0 +1,191 @@
+// Copyright (C) 2016-2017 Enrique Albertos
+// Distributed under the GNU GPL v2 software license
+
+
+import static org.junit.Assert.assertEquals;
+
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+import java.security.SignatureException;
+
+import org.junit.Test;
+/**
+ * Unit tests for {@link TxHandler#isValidTx(Transaction)}
+ * <p>
+ * Test Strategy:
+ * Test 1: test isValidTx() with valid transactions
+ * Test 2: test isValidTx() with transactions containing signatures of incorrect data
+ * Test 3: test isValidTx() with transactions containing signatures using incorrect private keys
+ * Test 4: test isValidTx() with transactions whose total output value exceeds total input value
+ * Test 5: test isValidTx() with transactions that claim outputs not in the current utxoPool
+ * Test 6: test isValidTx() with transactions that claim the same UTXO multiple times
+ * Test 7: test isValidTx() with transactions that contain a negative output value
+ * 
+ * @author ealbertos
+ *
+ */
+
+public class IsValidTest {
+
+	private static void assertTestSetIsValid(final UtxoTestSet utxoTestSet) {
+		final ValidationLists<Transaction> trxsValidation = utxoTestSet.getValidationLists();
+
+		// Instantiate student solution
+		final TxHandler txHandler = new TxHandler(utxoTestSet.getUtxoPool());
+
+		// Check validation of all the transactions in the set
+		for (Transaction tx: trxsValidation.allElements()) {
+			assertEquals(txHandler.isValidTx(tx), trxsValidation.isValid(tx) );
+		}
+	}
+
+	// Test 1: test isValidTx() with valid transactions
+	@Test
+	public void testIsValidWithValidTransactions()
+			throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing		
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setCorruptedPercentage(0) // All valid transactions
+				.build();
+		// check against student solution
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+
+	// Test 2: test isValidTx() with transactions containing signatures of incorrect data
+	@Test
+	public void testIsValidWithInvalidSignatures() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setForceCorruptedSignature(true)
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		// check against student solution
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+	// Test 3: test isValidTx() with transactions containing signatures using incorrect private keys
+	@Test
+	public void testIsValidSignaturesWithInvalidPrivateKeys() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setInvalidPrivateKeys(true) // corrupt the private key that signs
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		// check against student solution
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+	// Test 4: test isValidTx() with transactions whose total output value exceeds total input value
+	@Test
+	public void testIsValidTotalOutputExceedsTotalInput() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setInvalidTotals(true)  // create transactions with invalid total value
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		// check against student solution
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+
+	// Test 5: test isValidTx() with transactions that claim outputs not in the current utxoPool
+	@Test
+	public void testIsValidTransactionsClamingOuputsNotInThePool() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setClaimingOutputsNotInPool(true)  // create transactions claiming outputs not in the pool
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		// check against student solution
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+    // Test 6: test isValidTx() with transactions that claim the same UTXO multiple times
+	@Test
+	public void testIsValidTransactionsClaimingTheSameUTXOSeveralTimes() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setClaimingUtxoSeveralTimes(true)  // create transactions claiming the same output several times
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+    // Test 7: test isValidTx() with transactions that contain a negative output value
+	@Test
+	public void testIsValidTransactionsWithNegativeOutput() throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {
+		// Create a new set of transactions for testing				
+		final UtxoTestSet utxoTestSet = UtxoTestSet.builder()
+				.setPeopleSize(10)
+				.setUtxoTxNumber(10)
+				.setMaxUtxoTxOutput(10)
+				.setMaxValue(200)
+				.setTxPerTest(10)
+				.setMaxInput(10)
+				.setMaxOutput(10)
+				.setNegativeOutputs(true)  // create transactions with negative values
+				.setCorruptedPercentage(.20) // probability of 20% of invalid transactions
+				.build();
+
+		assertTestSetIsValid(utxoTestSet);
+
+	}
+
+
+
+
+}