Detect .git as project root

- Add .git as file or dir as root detection
- Fixes #190

Author: jvalkeal

src/main/java/org/springframework/cli/util/IoUtils.java

@@ -55,8 +55,15 @@ public static Path getWorkingDirectory() {
 	}
 
 	public static boolean inProjectRootDirectory(Path path) {
+		Path dotGit = path.resolve(".git");
+		if (Files.exists(dotGit)) {
+			return true;
+		}
 		Path pomFile = path.resolve("pom.xml");
-		return Files.exists(pomFile);
+		if (Files.exists(pomFile)) {
+			return true;
+		}
+		return false;
 	}
 
 	public static Path getProjectPath(String path) {

src/test/java/org/springframework/cli/util/IoUtilsTests.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2024 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.cli.util;
+
+import java.io.IOException;
+import java.nio.file.FileSystem;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import com.google.common.jimfs.Jimfs;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class IoUtilsTests {
+
+	private FileSystem fileSystem;
+
+	@BeforeEach
+	public void setupTests() {
+		fileSystem = Jimfs.newFileSystem();
+	}
+
+	@Test
+	public void inProjectRootDirectoryJustPom() throws IOException {
+		Path root = fileSystem.getPath("");
+		Path pom = root.resolve("pom.xml");
+		Files.createFile(pom);
+		boolean inProjectRootDirectory = IoUtils.inProjectRootDirectory(root);
+		assertThat(inProjectRootDirectory).isTrue();
+	}
+
+	@Test
+	public void testInProjectRootDirectoryDotgitfile() throws IOException {
+		Path root = fileSystem.getPath("");
+		Path dotgit = root.resolve(".git");
+		Files.createFile(dotgit);
+		boolean inProjectRootDirectory = IoUtils.inProjectRootDirectory(root);
+		assertThat(inProjectRootDirectory).isTrue();
+	}
+
+	@Test
+	public void testInProjectRootDirectoryDotgitdir() throws IOException {
+		Path root = fileSystem.getPath("");
+		Path dotgit = root.resolve(".git");
+		Files.createDirectories(dotgit);
+		boolean inProjectRootDirectory = IoUtils.inProjectRootDirectory(root);
+		assertThat(inProjectRootDirectory).isTrue();
+	}
+
+	@Test
+	public void testInProjectRootDirectoryPomAndDotgitfile() throws IOException {
+		Path root = fileSystem.getPath("");
+		Path pom = root.resolve("pom.xml");
+		Path dotgit = root.resolve(".git");
+		Files.createFile(pom);
+		Files.createFile(dotgit);
+		boolean inProjectRootDirectory = IoUtils.inProjectRootDirectory(root);
+		assertThat(inProjectRootDirectory).isTrue();
+	}
+
+}