Validate that keys containing path segments work

#2788

Author: afranken

integration-tests/src/test/kotlin/com/adobe/testing/s3mock/its/GetPutDeleteObjectIT.kt

@@ -97,6 +97,46 @@ internal class GetPutDeleteObjectIT : S3TestBase() {
     }.isInstanceOf(NoSuchKeyException::class.java)
   }
 
+  @Test
+  @S3VerifiedSuccess(year = 2025)
+  fun testPutGetHeadDeleteObject_pathSegments(testInfo: TestInfo) {
+    val key = "/.././$UPLOAD_FILE_NAME"
+    val bucketName = givenBucket(testInfo)
+
+    s3Client.putObject(
+      {
+        it.bucket(bucketName)
+        it.key(key)
+      },
+      RequestBody.fromFile(UPLOAD_FILE),
+    )
+
+    s3Client.headObject {
+      it.bucket(bucketName)
+      it.key(key)
+    }
+
+    s3Client
+      .getObject {
+        it.bucket(bucketName)
+        it.key(key)
+      }.use {
+        assertThat(it.response().contentLength()).isEqualTo(UPLOAD_FILE_LENGTH)
+      }
+
+    s3Client.deleteObject {
+      it.bucket(bucketName)
+      it.key(key)
+    }
+
+    assertThatThrownBy {
+      s3Client.getObject {
+        it.bucket(bucketName)
+        it.key(key)
+      }
+    }.isInstanceOf(NoSuchKeyException::class.java)
+  }
+
   @Test
   @S3VerifiedSuccess(year = 2025)
   fun testPutGetHeadDeleteObjects(testInfo: TestInfo) {

server/src/test/kotlin/com/adobe/testing/s3mock/ObjectControllerTest.kt

@@ -146,6 +146,59 @@ internal class ObjectControllerTest : BaseControllerTest() {
   }
 
 
+  @Test
+  @Throws(Exception::class)
+  fun testPutObject_withPathsegments_Ok() {
+    givenBucket()
+    val key = ".././sampleFile.txt"
+
+    val testFile = File(UPLOAD_FILE_NAME)
+    val digest = DigestUtil.hexDigest(Files.newInputStream(testFile.toPath()))
+    val tempFile = Files.createTempFile("testPutObject_Ok", "").also {
+      testFile.copyTo(it.toFile(), overwrite = true)
+    }
+    whenever(
+      objectService.toTempFile(
+        any(
+          InputStream::class.java
+        ), any(HttpHeaders::class.java)
+      )
+    )
+      .thenReturn(
+        FileChecksum(
+          tempFile,
+          DigestUtil.checksumFor(testFile.toPath(), DefaultChecksumAlgorithm.CRC32)
+        )
+      )
+
+    whenever(
+      objectService.putS3Object(
+        eq(TEST_BUCKET_NAME),
+        eq(key),
+        contains(MediaType.TEXT_PLAIN_VALUE),
+        anyMap(),
+        any(Path::class.java),
+        anyMap(),
+        anyMap(),
+        isNull(),
+        isNull(),
+        isNull(),
+        eq(Owner.DEFAULT_OWNER),
+        eq(StorageClass.STANDARD)
+      )
+    ).thenReturn(s3ObjectMetadata(key, digest))
+
+    mockMvc.perform(
+      put("/test-bucket/$key")
+        .content(testFile.readBytes())
+        .contentType(MediaType.TEXT_PLAIN)
+        .accept(MediaType.APPLICATION_XML)
+    )
+      .andExpect(status().isOk)
+      .andExpect(header().string(HttpHeaders.ETAG, "\"$digest\""))
+  }
+
+
   @Test
   @Throws(Exception::class)
   fun testPutObject_Options() {