add methods with String directory in ls and find

Author: fmbenhassine

src/main/java/io/github/benas/unixstream/UnixStream.java

@@ -142,6 +142,17 @@ static UnixStream<Path> ls(final Path directory) throws IOException {
         return new UnixStreamImpl<>(Files.list(directory));
     }
 
+    /**
+     * Create an UnixStream with file names of the given directory.
+     *
+     * @param directory the directory from which to list files
+     * @return an UnixStream with file names of the given directory.
+     * @throws IOException thrown if an error occurs during reading the directory
+     */
+    static UnixStream<Path> ls(final String directory) throws IOException {
+        return ls(Paths.get(directory));
+    }
+
     /**
      * Create a new UnixStream with the absolute path of the current directory.
      *
@@ -177,6 +188,18 @@ static UnixStream<Path> find(final Path directory, final String pattern) throws
                 .filter(path -> pathMatcher.matches(path.getFileName())));
     }
 
+    /**
+     * Find files by name (recursively) in a given directory.
+     *
+     * @param directory the root directory
+     * @param pattern   the file name pattern with <a href="https://docs.oracle.com/javase/tutorial/essential/io/fileOps.html#glob">glob syntax</a>.
+     * @return a new UnixStream with found files
+     * @throws IOException thrown if an error occurs during reading the file
+     */
+    static UnixStream<Path> find(final String directory, final String pattern) throws IOException {
+        return find(Paths.get(directory), pattern);
+    }
+
     /**
      * Create a new UnixStream from the given stream.
      *

src/test/java/io/github/benas/unixstream/components/FindTest.java

@@ -26,4 +26,11 @@ public void find_whenNoFileExist() throws Exception {
         assertThat(stream).isEmpty();
     }
 
+    @Test
+    public void findWithStringDirectory_whenFilesExist() throws Exception {
+        UnixStream<Path> stream = UnixStream.find(TEST_RESOURCES_DIRECTORY, "*.txt");
+
+        assertThat(stream).containsExactly(Paths.get(TEST_RESOURCES_DIRECTORY, "input.txt"));
+    }
+
 }

src/test/java/io/github/benas/unixstream/components/LsTest.java

@@ -26,4 +26,11 @@ public void ls() throws IOException {
                 Paths.get("unix-stream.jpeg")
         );
     }
+
+    @Test
+    public void ls_directory() throws IOException {
+        UnixStream<Path> stream = UnixStream.ls("src/test/resources");
+
+        assertThat(stream).contains(Paths.get("src/test/resources","input.txt"));
+    }
 }