readFile

Author: HydrolienF

src/main/java/fr/formiko/utils/FLUFiles.java

@@ -2,8 +2,9 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.List;
-import com.google.common.io.Files;
 
 /**
  * A utility class to manipulate files.
@@ -27,8 +28,8 @@ private FLUFiles() {} // hide constructor
     public static boolean copy(String source, String destination) { return internal.copy(source, destination); }
     public static boolean move(String source, String destination) { return internal.move(source, destination); }
 
-    public static String readFile(String path) { return null; }
-    public static List<String> readFileAsList(String path) { return null; }
+    public static String readFile(String path) { return internal.readFile(path); }
+    public static List<String> readFileAsList(String path) { return internal.readFileAsList(path); }
     public static boolean writeFile(String path, String content) { return false; }
     public static boolean appendToFile(String path, String content) { return false; }
 
@@ -111,7 +112,7 @@ private boolean copy(String source, String destination) {
                     return true;
                 }
                 try {
-                    Files.copy(sourceFile, destinationFile);
+                    com.google.common.io.Files.copy(sourceFile, destinationFile);
                 } catch (IOException | IllegalArgumentException e) {
                     return false;
                 }
@@ -132,5 +133,28 @@ private boolean move(String source, String destination) {
                 return false;
             }
         }
+        private static String readFile(String path) {
+            if (isAValidePath(path)) {
+                try {
+                    // return Files.readAllLines(Paths.get(path));
+                    return Files.readString(Paths.get(path));
+                } catch (IOException e) {
+                    return null;
+                }
+            } else {
+                return null;
+            }
+        }
+        private static List<String> readFileAsList(String path) {
+            if (isAValidePath(path)) {
+                try {
+                    return Files.readAllLines(Paths.get(path));
+                } catch (IOException e) {
+                    return null;
+                }
+            } else {
+                return null;
+            }
+        }
     }
 }

src/test/java/fr/formiko/utils/FLUFilesTest.java

@@ -1,8 +1,10 @@
 package fr.formiko.utils;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import java.io.File;
+import java.util.List;
 import java.util.stream.Stream;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
@@ -139,4 +141,44 @@ private static Stream<Arguments> testMoveDirectorySource() {
         return Stream.of(
                 Arguments.of(TEST_PATH + "existingDir/", true, TEST_PATH_TEMPORARY + "moveOfTestResources/", "subDir/existingFile.txt"));
     }
+
+    @ParameterizedTest
+    @MethodSource("testReadFileSource")
+    void testReadFile(String path, boolean shouldWork, String content) {
+        if (shouldWork) {
+            assertEquals(content, FLUFiles.readFile(path));
+        } else {
+            assertNull(FLUFiles.readFile(path));
+        }
+    }
+
+    private static Stream<Arguments> testReadFileSource() {
+        return Stream.of(Arguments.of(TEST_PATH + "existingFile.x", true, "Some content."),
+                Arguments.of(TEST_PATH + "unexistingFile.x", false, null), Arguments.of(null, false, null),
+                Arguments.of(TEST_PATH + "existingDir/subDir/", false, null),
+                Arguments.of(TEST_PATH + "existingDir/subDir/existingFile.txt", true, "ipnzéfl\n" + //
+                        "zgrebinoa\n" + //
+                        "rez bzn,\n"));
+    }
+
+    @ParameterizedTest
+    @MethodSource("testReadFileAsListSource")
+    void testWriteFile(String path, boolean shouldWork, List<String> content) {
+        if (shouldWork) {
+            List<String> list = FLUFiles.readFileAsList(path);
+            assertEquals(content.size(), list.size());
+            for (int i = 0; i < content.size(); i++) {
+                assertEquals(content.get(i), list.get(i));
+            }
+        } else {
+            assertNull(FLUFiles.readFileAsList(path));
+        }
+    }
+
+    private static Stream<Arguments> testReadFileAsListSource() {
+        return Stream.of(Arguments.of(TEST_PATH + "existingFile.x", true, List.of("Some content.")),
+                Arguments.of(TEST_PATH + "unexistingFile.x", false, null), Arguments.of(null, false, null),
+                Arguments.of(TEST_PATH + "existingDir/subDir/", false, null),
+                Arguments.of(TEST_PATH + "existingDir/subDir/existingFile.txt", true, List.of("ipnzéfl", "zgrebinoa", "rez bzn,")));
+    }
 }

src/test/resources/existingDir/subDir/existingFile.txt

@@ -1,3 +1,3 @@
-ipnzefl
+ipnzéfl
 zgrebinoa
 rez bzn,