langtools/test/tools/javac/modules/ModuleTestBase.java
changeset 36526 3b41f1c69604
child 36778 e04318f39f92
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/modules/ModuleTestBase.java	Thu Mar 17 19:04:28 2016 +0000
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2013, 2015, 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 java.io.File;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.lang.annotation.Annotation;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.stream.Collectors;
+
+/**
+ * Base class for module tests.
+ */
+public class ModuleTestBase {
+    protected ToolBox tb;
+    protected PrintStream out;
+    private int errors;
+
+    /** Marker annotation for test methods to be invoked by runTests. */
+    @Retention(RetentionPolicy.RUNTIME)
+    @interface Test { }
+
+    /**
+     * Run all methods annotated with @Test, and throw an exception if any
+     * errors are reported..
+     *
+     * @throws Exception if any errors occurred
+     */
+    void runTests() throws Exception {
+        if (tb == null)
+            tb = new ToolBox();
+        out = System.err;
+
+        for (Method m: getClass().getDeclaredMethods()) {
+            Annotation a = m.getAnnotation(Test.class);
+            if (a != null) {
+                try {
+                    out.println("Running test " + m.getName());
+                    Path baseDir = Paths.get(m.getName());
+                    m.invoke(this, new Object[] { baseDir });
+                } catch (InvocationTargetException e) {
+                    Throwable cause = e.getCause();
+                    error("Exception: " + e.getCause());
+                    cause.printStackTrace(out);
+                }
+                out.println();
+            }
+        }
+        if (errors > 0)
+            throw new Exception(errors + " errors occurred");
+    }
+
+    // move to ToolBox?
+    // change returntyp to List<Path> -- means updating ToolBox methods
+    Path[] findJavaFiles(Path... paths) throws IOException {
+        Set<Path> files = new TreeSet<>();
+        for (Path p : paths) {
+            Files.walkFileTree(p, new SimpleFileVisitor<Path>() {
+                @Override
+                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
+                        throws IOException {
+                    if (file.getFileName().toString().endsWith(".java")) {
+                        files.add(file);
+                    }
+                    return FileVisitResult.CONTINUE;
+                }
+            });
+        }
+        return files.toArray(new Path[files.size()]);
+    }
+
+    void error(String message) {
+        out.println("Error: " + message);
+        errors++;
+    }
+
+    public class ModuleBuilder {
+
+        private final String name;
+        private String requires = "";
+        private String exports = "";
+        private String uses = "";
+        private String provides = "";
+        private String modulePath = "";
+        private List<String> content = new ArrayList<>();
+
+        public ModuleBuilder(String name) {
+            this.name = name;
+        }
+
+        public ModuleBuilder requiresPublic(String requires, Path... modulePath) {
+            return requires("public " + requires, modulePath);
+        }
+
+        public ModuleBuilder requires(String requires, Path... modulePath) {
+            this.requires += "    requires " + requires + ";\n";
+            this.modulePath += Arrays.stream(modulePath)
+                    .map(Path::toString)
+                    .collect(Collectors.joining(File.pathSeparator));
+            return this;
+        }
+
+        public ModuleBuilder exportsTo(String pkg, String module) {
+            return exports(pkg + " to " + module);
+        }
+
+        public ModuleBuilder exports(String pkg) {
+            this.exports += "    exports " + pkg + ";\n";
+            return this;
+        }
+
+        public ModuleBuilder uses(String uses) {
+            this.uses += "    uses " + uses + ";\n";
+            return this;
+        }
+
+        public ModuleBuilder provides(String service, String implementation) {
+            this.provides += "    provides " + service + " with " + implementation + ";\n";
+            return this;
+        }
+
+        public ModuleBuilder classes(String... content) {
+            this.content.addAll(Arrays.asList(content));
+            return this;
+        }
+
+        public Path write(Path where) throws IOException {
+            Files.createDirectories(where);
+            List<String> sources = new ArrayList<>();
+            sources.add("module " + name + "{"
+                    + requires
+                    + exports
+                    + uses
+                    + provides
+                    + "}");
+            sources.addAll(content);
+            Path moduleSrc = where.resolve(name + "/src");
+            tb.writeJavaFiles(moduleSrc, sources.toArray(new String[]{}));
+            return moduleSrc;
+        }
+
+        public void build(Path where) throws IOException {
+            Path moduleSrc = write(where);
+            tb.new JavacTask()
+                    .outdir(where.resolve(name))
+                    .options("-mp", modulePath)
+                    .files(findJavaFiles(moduleSrc))
+                    .run()
+                    .writeAll();
+        }
+    }
+}