--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/util/ManifestDigester/FindSections.java	Thu Jul 18 08:53:06 2019 +0800
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import sun.security.util.ManifestDigester;
+import org.testng.annotations.Test;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.testng.Assert.*;
+
+
+/**
+ * @test
+ * @bug 8217375
+ * @modules java.base/sun.security.util
+ * @run testng FindSections
+ * @summary Check {@link ManifestDigester#ManifestDigester} processing
+ * individual sections and particularly identifying their names correctly.
+ * Main attributes are not covered in this test.
+ * <p>
+ * See also {@link FindSection} for the {@link ManifestDigester#findSection}
+ * method specifically.
+ */
+public class FindSections {
+
+    static final String DEFAULT_MANIFEST = "Manifest-Version: 1.0\r\n\r\n";
+
+    void test(String manifest, String expectedSection) {
+        ManifestDigester md = new ManifestDigester(manifest.getBytes(UTF_8));
+        if (expectedSection != null) {
+            assertNotNull(md.get(expectedSection, false));
+        } else {
+            assertNull(md.get(expectedSection, false));
+        }
+    }
+
+    @Test
+    public void testNameNoSpaceAfterColon() throws Exception {
+        test(DEFAULT_MANIFEST + "Name:section\r\n\r\n", null);
+    }
+
+    @Test
+    public void testNameCase() throws Exception {
+        test(DEFAULT_MANIFEST + "nAME: section\r\n\r\n", "section");
+    }
+
+    @Test
+    public void testEmptyName() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: \r\n\r\n", "");
+    }
+
+    @Test
+    public void testShortestInvalidSection() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: ", null);
+    }
+
+    @Test
+    public void testMinimalValidSection() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: \r", "");
+    }
+
+    @Test
+    public void testNameNotContinued() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: FooBar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testImmediatelyContinuedCrName() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: \r FooBar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testImmediatelyContinuedLfName() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: \n FooBar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testImmediatelyContinuedCrLfName() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: \r\n FooBar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedCr() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: FooBar\r \r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: FooBar\n \r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedCrLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: FooBar\r\n \r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedCrIgnoreNextChar() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Foo\r: Bar\r\n", "Foo");
+    }
+
+    @Test
+    public void testNameContinuedCrIgnoreNextCharSpace() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Foo\r  Bar\r\n", "Foo Bar");
+    }
+
+    @Test
+    public void testNameContinuedContinuedCr() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Fo\r\n oB\r ar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedContinuedLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Fo\r\n oB\n ar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedContinuedCrLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Fo\r\n oB\r\n ar\r\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedEndCr() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Foo\r\n Bar\r", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedEndLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Foo\r\n Bar\n", "FooBar");
+    }
+
+    @Test
+    public void testNameContinuedEndCrLf() throws Exception {
+        test(DEFAULT_MANIFEST + "Name: Foo\r\n Bar\r\n", "FooBar");
+    }
+
+}