/*
 * Copyright 2012-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.buildpack.platform.io;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.Collections;
import java.util.Set;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.io.TempDir;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIOException;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;

/**
 * Tests for {@link FilePermissions}.
 *
 * @author Scott Frederick
 */
class FilePermissionsTests {

	@TempDir
	Path tempDir;

	@Test
	void umaskForPath() throws IOException {
		FileAttribute<Set<PosixFilePermission>> fileAttribute = PosixFilePermissions
				.asFileAttribute(PosixFilePermissions.fromString("rw-r-----"));
		Path tempFile = Files.createTempFile(this.tempDir, "umask", null, fileAttribute);
		assertThat(FilePermissions.umaskForPath(tempFile)).isEqualTo(0640);
	}

	@Test
	void umaskForPathWithNonExistentFile() throws IOException {
		assertThatIOException()
				.isThrownBy(() -> FilePermissions.umaskForPath(Paths.get(this.tempDir.toString(), "does-not-exist")));
	}

	@Test
	void umaskForPathWithNullPath() throws IOException {
		assertThatIllegalArgumentException().isThrownBy(() -> FilePermissions.umaskForPath(null));
	}

	@Test
	void posixPermissionsToUmask() {
		Set<PosixFilePermission> permissions = PosixFilePermissions.fromString("rwxrw-r--");
		assertThat(FilePermissions.posixPermissionsToUmask(permissions)).isEqualTo(0764);
	}

	@Test
	void posixPermissionsToUmaskWithEmptyPermissions() {
		Set<PosixFilePermission> permissions = Collections.emptySet();
		assertThat(FilePermissions.posixPermissionsToUmask(permissions)).isEqualTo(0);
	}

	@Test
	void posixPermissionsToUmaskWithNullPermissions() {
		assertThatIllegalArgumentException().isThrownBy(() -> FilePermissions.posixPermissionsToUmask(null));
	}

}

@@ -1023,16 +1023,164 @@
 i.Test;%0A
+import org.junit.jupiter.api.condition.DisabledOnOs;%0Aimport org.junit.jupiter.api.condition.EnabledOnOs;%0Aimport org.junit.jupiter.api.condition.OS;%0A
 import o
@@ -1212,16 +1212,16 @@
 empDir;%0A
-
 %0Aimport 
@@ -1421,16 +1421,95 @@
 ception;
+%0Aimport static org.assertj.core.api.Assertions.assertThatIllegalStateException;
 %0A%0A/**%0A *
@@ -1633,32 +1633,59 @@
 empDir;%0A%0A%09@Test%0A
+%09@DisabledOnOs(OS.WINDOWS)%0A
 %09void umaskForPa
@@ -2014,32 +2014,59 @@
 40);%0A%09%7D%0A%0A%09@Test%0A
+%09@DisabledOnOs(OS.WINDOWS)%0A
 %09void umaskForPa
@@ -2136,16 +2136,16 @@
 ption()%0A
-
 %09%09%09%09.isT
@@ -2239,32 +2239,358 @@
 -exist%22)));%0A%09%7D%0A%0A
+%09@Test%0A%09@EnabledOnOs(OS.WINDOWS)%0A%09void umaskForPathOnWindowsFails() throws IOException %7B%0A%09%09Path tempFile = Files.createTempFile(%22umask%22, null);%0A%09%09assertThatIllegalStateException().isThrownBy(() -%3E FilePermissions.umaskForPath(tempFile))%0A%09%09%09%09.withMessageContaining(%22Unsupported file type for retrieving Posix attributes%22);%0A%09%7D%0A%0A
 %09@Test%0A%09void uma

Fix FilePermissionsTests on Windows