JG 91 homework6 ruslan modify file

modules/ruslan/src/main/java/com/hillel/elementary/javageeks/ruslanTask6/ReadInBUF.java

@@ -0,0 +1,31 @@
+package com.hillel.elementary.javageeks.ruslanTask6;
+
+import java.io.*;
+
+public class ReadInBUF {
+
+    public static void WorkWithFile (File file) throws IOException {
+
+        BufferedReader br = new BufferedReader(new FileReader(file));
+        String st;
+        StringBuilder builder = new StringBuilder();
+
+        while ((st = br.readLine()) != null) {
+            String[] arrStr = st.split(" ");
+            for (int i = 0; i < arrStr.length; i++) {
+                if (!arrStr[i].isEmpty()) {
+                    builder.append(arrStr[i].substring(0, 1).toUpperCase() + arrStr[i].substring(1) + " ");
+                }
+            }
+            builder.append("\n");
+        }
+        WriteFile(file.toString(), builder.toString());
+    }
+
+    public static void WriteFile(String FILENAME, String str) throws IOException {
+
+        BufferedWriter writer = new BufferedWriter(new FileWriter(new File(FILENAME)));
+        writer.append(str);
+        writer.close();
+    }
+}

modules/ruslan/src/main/resources/Test

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+The Project Gutenberg eBook, The sea-wolf, by Jack London
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever.  You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+Title: The sea-Wolf
+Author: jack London

modules/ruslan/src/test/java/com/hillel/elementary/javageeks/ruslanTask6/ReadInBUFTest.java

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+package com.hillel.elementary.javageeks.ruslanTask6;
+
+import java.net.URL;
+import org.junit.jupiter.api.Test;
+import static org.assertj.core.api.Assertions.assertThat;
+import java.io.*;
+
+class ReadInBUFTest {
+
+        @Test
+        public void shouldResultReadFromFile() throws IOException {
+
+        //given
+        URL resource = ReadInBUF.class.getClassLoader().getResource("Test");
+        String fileFrom = resource.getFile();
+        File file = new File(fileFrom);
+
+        ReadInBUF.WorkWithFile(file);
+
+        String sCurrentLine = null;
+            try (BufferedReader br = new BufferedReader(new FileReader(fileFrom))) {
+                while ((sCurrentLine = br.readLine()) != null) {
+                    String[] parts = sCurrentLine.split(" ");
+
+                    int random = (int) (Math.random() * parts.length);
+
+                    String lineOutput = "";
+                    String checkResult = null;
+
+                    if (sCurrentLine.length() > 0) {
+                        char letter = parts[random].substring(0, 1).charAt(0);
+                        if (letter >= 65 && letter <= 90) {
+                            checkResult = "true";
+                        } else {
+                            checkResult = "false";
+                        }
+                    }
+                    assertThat(checkResult).isEqualTo("true");
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+}