Create methods for creating temp files

Created utility methods to create temp files and set default
permissions.  These can be used in other repos to satisfy sonar.
Also added code to close streams and clean up temp files created
by some junit tests.
Modified to use IOUtils to read a stream.

Issue-ID: POLICY-3289
Change-Id: Ic83e4f4d7745be7b37ebb42bf1d81e303d8dadc9
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 60 insertions, 13 deletions

diff --git a/utils/src/test/java/org/onap/policy/common/utils/resources/TextFileUtilsTest.java b/utils/src/test/java/org/onap/policy/common/utils/resources/TextFileUtilsTest.java
index 67cdab52..91268979 100644
--- a/utils/src/test/java/org/onap/policy/common/utils/resources/TextFileUtilsTest.java
+++ b/utils/src/test/java/org/onap/policy/common/utils/resources/TextFileUtilsTest.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2019 Nordix Foundation.
- *  Modifications Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ *  Modifications Copyright (C) 2020-2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,11 +21,13 @@
 
 package org.onap.policy.common.utils.resources;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.Assert.assertEquals;
 
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
+import org.apache.commons.io.FileUtils;
 import org.junit.Test;
 
 /**
@@ -39,35 +41,80 @@ public class TextFileUtilsTest {
 
     @Test
     public void testPutToFile() throws IOException {
-        final File tempTextFile = File.createTempFile("Test", "txt");
+        final File tempTextFile = File.createTempFile("Test", ".txt");
+        tempTextFile.deleteOnExit();
 
         TextFileUtils.putStringAsTextFile(FILE_CONTENT, tempTextFile.getAbsolutePath());
 
         final String textFileString0 = TextFileUtils.getTextFileAsString(tempTextFile.getAbsolutePath());
         assertEquals(FILE_CONTENT, textFileString0);
 
-        final FileInputStream fis = new FileInputStream(tempTextFile);
-        final String textFileString1 = TextFileUtils.getStreamAsString(fis);
-        assertEquals(textFileString0, textFileString1);
+        try (final FileInputStream fis = new FileInputStream(tempTextFile)) {
+            final String textFileString1 = TextFileUtils.getStreamAsString(fis);
+            assertEquals(textFileString0, textFileString1);
+        }
     }
 
     @Test
     public void testPutToFileWithNewPath() throws IOException {
         String tempDirAndFileName = System.getProperty("java.io.tmpdir") + "/non/existant/path/Test.txt";
+        FileUtils.forceDeleteOnExit(new File(tempDirAndFileName));
 
         TextFileUtils.putStringAsTextFile(FILE_CONTENT, tempDirAndFileName);
 
         final String textFileString0 = TextFileUtils.getTextFileAsString(tempDirAndFileName);
         assertEquals(FILE_CONTENT, textFileString0);
 
-        final FileInputStream fis = new FileInputStream(tempDirAndFileName);
-        final String textFileString1 = TextFileUtils.getStreamAsString(fis);
-        assertEquals(textFileString0, textFileString1);
+        try (final FileInputStream fis = new FileInputStream(tempDirAndFileName)) {
+            final String textFileString1 = TextFileUtils.getStreamAsString(fis);
+            assertEquals(textFileString0, textFileString1);
+        }
+    }
+
+    @Test
+    public void testCreateTempFile() throws IOException {
+        var file = TextFileUtils.createTempFile("textFileUtilsTest", ".txt");
+        file.deleteOnExit();
+
+        verifyDefaultPermissions(file);
+    }
+
+    @Test
+    public void testSetDefaultPermissions() throws IOException {
+        var file = new File("target/tempfile.txt");
+        file.deleteOnExit();
+
+        // ensure it doesn't exist before we create it
+        file.delete();
+        assertThat(file.createNewFile()).isTrue();
+
+        // check using whatever permissions it comes with
+
+        TextFileUtils.setDefaultPermissions(file);
+
+        verifyDefaultPermissions(file);
+
+        // prevent read-write-execute by anyone
+        file.setReadable(false);
+        file.setWritable(false);
+        file.setExecutable(false);
+
+        TextFileUtils.setDefaultPermissions(file);
+
+        verifyDefaultPermissions(file);
+
+        // make it read-write-execute by everyone
+        file.setReadable(true);
+        file.setWritable(true);
+        file.setExecutable(true);
+
+        TextFileUtils.setDefaultPermissions(file);
+
+        verifyDefaultPermissions(file);
+    }
 
-        File tempDirAndFile = new File(tempDirAndFileName);
-        tempDirAndFile.delete();
-        tempDirAndFile.getParentFile().delete();
-        tempDirAndFile.getParentFile().getParentFile().delete();
-        tempDirAndFile.getParentFile().getParentFile().getParentFile().delete();
+    private void verifyDefaultPermissions(File file) {
+        assertThat(file).canRead().canWrite();
+        assertThat(file.canExecute()).isTrue();
     }
 }