[MINOR] refactoring to introduce deleteOnExit() for temp files

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/ProcessPantheonNodeRunner.java

@@ -136,6 +136,7 @@ public void startNode(final PantheonNode node) {
   private Path createGenesisFile(final PantheonNode node, final EthNetworkConfig ethNetworkConfig) {
     try {
       Path genesisFile = Files.createTempFile(node.homeDirectory(), "genesis", "");
+      genesisFile.toFile().deleteOnExit();
       Files.write(genesisFile, ethNetworkConfig.getGenesisConfig().getBytes(UTF_8));
       return genesisFile;
     } catch (IOException e) {

acceptance-tests/src/test/java/tech/pegasys/pantheon/tests/acceptance/dsl/node/factory/PantheonNodeFactory.java

@@ -223,6 +223,7 @@ public PantheonNode createNodeWithNodesWhitelist(
         PermissioningConfiguration.createDefault();
     permissioningConfiguration.setNodeWhitelist(nodesWhitelist);
     File tempFile = createTempPermissioningConfigurationFile();
+    tempFile.deleteOnExit();
     permissioningConfiguration.setConfigurationFilePath(tempFile.getPath());
     initPermissioningConfigurationFile(
         WhitelistPersistor.WHITELIST_TYPE.NODES,

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/NettyP2PNetworkTest.java

@@ -46,6 +46,7 @@
 
 import java.net.InetAddress;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
@@ -414,8 +415,10 @@ public void rejectIncomingConnectionFromNonWhitelistedPeer() throws Exception {
     final PeerBlacklist localBlacklist = new PeerBlacklist();
     final PeerBlacklist remoteBlacklist = new PeerBlacklist();
     final PermissioningConfiguration config = PermissioningConfiguration.createDefault();
-    config.setConfigurationFilePath(
-        Files.createTempFile("test", "test").toAbsolutePath().toString());
+    final Path tempFile = Files.createTempFile("test", "test");
+    tempFile.toFile().deleteOnExit();
+    config.setConfigurationFilePath(tempFile.toAbsolutePath().toString());
+
     final NodeWhitelistController localWhitelistController =
         new NodeWhitelistController(config, Collections.emptyList());
     // turn on whitelisting by adding a different node NOT remote node

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/discovery/internal/PeerDiscoveryControllerTest.java

@@ -51,6 +51,7 @@
 import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -1212,8 +1213,9 @@ private PeerDiscoveryController startPeerDiscoveryController(
 
   private PermissioningConfiguration permissioningConfigurationWithTempFile() throws IOException {
     final PermissioningConfiguration config = PermissioningConfiguration.createDefault();
-    config.setConfigurationFilePath(
-        Files.createTempFile("test", "test").toAbsolutePath().toString());
+    Path tempFile = Files.createTempFile("test", "test");
+    tempFile.toFile().deleteOnExit();
+    config.setConfigurationFilePath(tempFile.toAbsolutePath().toString());
     return config;
   }
 

ethereum/p2p/src/test/java/tech/pegasys/pantheon/ethereum/p2p/discovery/internal/RecursivePeerRefreshStateTest.java

@@ -32,6 +32,7 @@
 import tech.pegasys.pantheon.util.bytes.BytesValue;
 
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
@@ -480,10 +481,11 @@ public void shouldNotBondWithNodesRejectedByWhitelist() throws Exception {
     final DiscoveryPeer peerA = new DiscoveryPeer(createId(1), "127.0.0.1", 1, 1);
     final DiscoveryPeer peerB = new DiscoveryPeer(createId(2), "127.0.0.2", 2, 2);
 
+    final Path tempFile = Files.createTempFile("test", "test");
+    tempFile.toFile().deleteOnExit();
     final PermissioningConfiguration permissioningConfiguration =
         PermissioningConfiguration.createDefault();
-    permissioningConfiguration.setConfigurationFilePath(
-        Files.createTempFile("test", "test").toAbsolutePath().toString());
+    permissioningConfiguration.setConfigurationFilePath(tempFile.toAbsolutePath().toString());
 
     final NodeWhitelistController peerWhitelist =
         new NodeWhitelistController(permissioningConfiguration, Collections.emptyList());

ethereum/permissioning/src/test/java/tech/pegasys/pantheon/ethereum/permissioning/AccountWhitelistControllerTest.java

@@ -234,6 +234,7 @@ public void accountThatDoesNotStartWith0xIsNotValid() {
   private Path createPermissionsFileWithAccount(final String account) throws IOException {
     final String nodePermissionsFileContent = "accounts-whitelist=[\"" + account + "\"]";
     final Path permissionsFile = Files.createTempFile("account_permissions", "");
+    permissionsFile.toFile().deleteOnExit();
     Files.write(permissionsFile, nodePermissionsFileContent.getBytes(StandardCharsets.UTF_8));
     return permissionsFile;
   }

ethereum/permissioning/src/test/java/tech/pegasys/pantheon/ethereum/permissioning/NodeWhitelistControllerTest.java

@@ -388,6 +388,7 @@ public void whenReloadingWhitelistAndNothingChangesShouldNotNotifyWhitelistModif
   private Path createPermissionsFileWithNode(final String node) throws IOException {
     final String nodePermissionsFileContent = "nodes-whitelist=[\"" + node + "\"]";
     final Path permissionsFile = Files.createTempFile("node_permissions", "");
+    permissionsFile.toFile().deleteOnExit();
     Files.write(permissionsFile, nodePermissionsFileContent.getBytes(StandardCharsets.UTF_8));
     return permissionsFile;
   }

ethereum/permissioning/src/test/java/tech/pegasys/pantheon/ethereum/permissioning/PermissioningConfigurationBuilderTest.java

@@ -12,9 +12,11 @@
  */
 package tech.pegasys.pantheon.ethereum.permissioning;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.catchThrowable;
 
+import java.io.IOException;
 import java.net.URI;
 import java.net.URL;
 import java.nio.file.Files;
@@ -53,8 +55,7 @@ public void permissioningConfig() throws Exception {
     final String uri2 = "enode://" + VALID_NODE_ID + "@192.169.0.9:4568";
 
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_VALID);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     PermissioningConfiguration permissioningConfiguration = permissioningConfig(toml);
 
@@ -71,8 +72,7 @@ public void permissioningConfigWithOnlyNodeWhitelistSet() throws Exception {
     final String uri = "enode://" + VALID_NODE_ID + "@192.168.0.9:4567";
 
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_NODE_WHITELIST_ONLY);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     PermissioningConfiguration permissioningConfiguration =
         PermissioningConfigurationBuilder.permissioningConfiguration(
@@ -86,8 +86,7 @@ public void permissioningConfigWithOnlyNodeWhitelistSet() throws Exception {
   @Test
   public void permissioningConfigWithOnlyAccountWhitelistSet() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_ACCOUNT_WHITELIST_ONLY);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     PermissioningConfiguration permissioningConfiguration =
         PermissioningConfigurationBuilder.permissioningConfiguration(
@@ -102,8 +101,7 @@ public void permissioningConfigWithOnlyAccountWhitelistSet() throws Exception {
   @Test
   public void permissioningConfigWithInvalidAccount() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_INVALID_ACCOUNT);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     final Throwable thrown = catchThrowable(() -> permissioningConfig(toml));
 
@@ -115,8 +113,7 @@ public void permissioningConfigWithInvalidAccount() throws Exception {
   @Test
   public void permissioningConfigWithInvalidEnode() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_INVALID_ENODE);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     final Throwable thrown = catchThrowable(() -> permissioningConfig(toml));
 
@@ -128,8 +125,7 @@ public void permissioningConfigWithInvalidEnode() throws Exception {
   @Test
   public void permissioningConfigWithEmptyWhitelistMustNotError() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_EMPTY_WHITELISTS);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     PermissioningConfiguration permissioningConfiguration = permissioningConfig(toml);
 
@@ -142,8 +138,7 @@ public void permissioningConfigWithEmptyWhitelistMustNotError() throws Exception
   @Test
   public void permissioningConfigWithAbsentWhitelistMustThrowException() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_ABSENT_WHITELISTS);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     final Throwable thrown = catchThrowable(() -> permissioningConfig(toml));
 
@@ -153,8 +148,7 @@ public void permissioningConfigWithAbsentWhitelistMustThrowException() throws Ex
   @Test
   public void permissioningConfigWithUnrecognizedKeyMustThrowException() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_UNRECOGNIZED_KEY);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     final Throwable thrown = catchThrowable(() -> permissioningConfig(toml));
 
@@ -167,7 +161,7 @@ public void permissioningConfigWithUnrecognizedKeyMustThrowException() throws Ex
   @Test
   public void permissioningConfigWithEmptyFileMustThrowException() throws Exception {
     // write an empty file
-    final Path toml = Files.createTempFile("toml", "");
+    final Path toml = createTempFile("toml", "".getBytes(UTF_8));
 
     final Throwable thrown = catchThrowable(() -> permissioningConfig(toml));
 
@@ -177,8 +171,7 @@ public void permissioningConfigWithEmptyFileMustThrowException() throws Exceptio
   @Test
   public void permissioningConfigFromFileMustSetFilePath() throws Exception {
     final URL configFile = Resources.getResource(PERMISSIONING_CONFIG_VALID);
-    final Path toml = Files.createTempFile("toml", "");
-    Files.write(toml, Resources.toByteArray(configFile));
+    final Path toml = createTempFile("toml", Resources.toByteArray(configFile));
 
     PermissioningConfiguration permissioningConfiguration =
         PermissioningConfigurationBuilder.permissioningConfigurationFromToml(
@@ -213,4 +206,11 @@ private PermissioningConfiguration permissioningConfig(final Path toml) throws E
     return PermissioningConfigurationBuilder.permissioningConfiguration(
         toml.toAbsolutePath().toString(), true, true);
   }
+
+  private Path createTempFile(final String filename, final byte[] contents) throws IOException {
+    final Path file = Files.createTempFile(filename, "");
+    Files.write(file, contents);
+    file.toFile().deleteOnExit();
+    return file;
+  }
 }

ethereum/permissioning/src/test/java/tech/pegasys/pantheon/ethereum/permissioning/WhitelistPersistorTest.java

@@ -43,6 +43,7 @@ public class WhitelistPersistorTest {
   public void setUp() throws IOException {
     List<String> lines = Lists.newArrayList(nodesWhitelist, accountsWhitelist);
     tempFile = File.createTempFile("test", "test");
+    tempFile.deleteOnExit();
     Files.write(tempFile.toPath(), lines, StandardOpenOption.WRITE, StandardOpenOption.CREATE);
     whitelistPersistor = new WhitelistPersistor(tempFile.getAbsolutePath());
   }