Add some more smarts around --debug

--verbose seems to be only for CLI logging (so really only
for dependency resolution). --debug is interpreted by SpringApplication
but up to now has been extracted and deleted from the command line
by the CommandRunner. This change makes --debug set a System property
*and* pass it down to the application (if used with -- separator).

Fixes gh-266

spring-boot-cli/src/main/java/org/springframework/boot/cli/CommandRunner.java

@@ -158,6 +158,9 @@ public class CommandRunner implements Iterable<Command> {
 	public int runAndHandleErrors(String... args) {
 		String[] argsWithoutDebugFlags = removeDebugFlags(args);
 		boolean debug = argsWithoutDebugFlags.length != args.length;
+		if (debug) {
+			System.setProperty("debug", "true");
+		}
 		try {
 			run(argsWithoutDebugFlags);
 			return 0;
@@ -173,10 +176,14 @@ public class CommandRunner implements Iterable<Command> {
 
 	private String[] removeDebugFlags(String[] args) {
 		List<String> rtn = new ArrayList<String>(args.length);
+		boolean appArgsDetected = false;
 		for (String arg : args) {
-			if (!("-d".equals(arg) || "--debug".equals(arg))) {
+			// Allow apps to have a -d argument
-				rtn.add(arg);
+			appArgsDetected |= "--".equals(arg);
+			if (("-d".equals(arg) || "--debug".equals(arg)) && !appArgsDetected) {
+				continue;
 			}
+			rtn.add(arg);
 		}
 		return rtn.toArray(new String[rtn.size()]);
 	}

spring-boot-cli/src/main/java/org/springframework/boot/cli/command/run/RunCommand.java

@@ -77,7 +77,8 @@ public class RunCommand extends OptionParsingCommand {
 			this.watchOption = option("watch", "Watch the specified file for changes");
 			this.editOption = option(asList("edit", "e"),
 					"Open the file with the default system editor");
-			this.verboseOption = option(asList("verbose", "v"), "Verbose logging");
+			this.verboseOption = option(asList("verbose", "v"),
+					"Verbose logging of dependency resolution");
 			this.quietOption = option(asList("quiet", "q"), "Quiet logging");
 		}
 
@@ -141,12 +142,12 @@ public class RunCommand extends OptionParsingCommand {
 
 			@Override
 			public Level getLogLevel() {
-				if (getOptions().has(RunOptionHandler.this.verboseOption)) {
-					return Level.FINEST;
-				}
 				if (getOptions().has(RunOptionHandler.this.quietOption)) {
 					return Level.OFF;
 				}
+				if (getOptions().has(RunOptionHandler.this.verboseOption)) {
+					return Level.FINEST;
+				}
 				return Level.INFO;
 			}
 		}

spring-boot-cli/src/test/java/org/springframework/boot/cli/CommandRunnerIntegrationTests.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2012-2013 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
+ *
+ *      http://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.cli;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.springframework.boot.cli.command.run.RunCommand;
+import org.springframework.boot.cli.util.OutputCapture;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * @author Dave Syer
+ */
+public class CommandRunnerIntegrationTests {
+
+	@Rule
+	public OutputCapture output = new OutputCapture();
+
+	@Test
+	public void debugAddsAutoconfigReport() {
+		CommandRunner runner = new CommandRunner("spring");
+		runner.addCommand(new RunCommand());
+		// -d counts as "debug" for the spring command, but not for the
+		// LoggingApplicationListener
+		runner.runAndHandleErrors("run", "samples/app.groovy", "-d");
+		assertTrue(this.output.toString().contains("Negative matches:"));
+	}
+
+	@Test
+	public void debugSwitchedOffForAppArgs() {
+		CommandRunner runner = new CommandRunner("spring");
+		runner.addCommand(new RunCommand());
+		runner.runAndHandleErrors("run", "samples/app.groovy", "--", "-d");
+		assertFalse(this.output.toString().contains("Negative matches:"));
+	}
+}

spring-boot-cli/src/test/java/org/springframework/boot/cli/CommandRunnerTests.java

@@ -29,6 +29,7 @@ import org.mockito.MockitoAnnotations;
 import org.springframework.boot.cli.command.Command;
 
 import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertThat;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.BDDMockito.willThrow;
@@ -63,6 +64,7 @@ public class CommandRunnerTests {
 	@After
 	public void close() {
 		Thread.currentThread().setContextClassLoader(this.loader);
+		System.clearProperty("debug");
 	}
 
 	@Before
@@ -115,6 +117,15 @@ public class CommandRunnerTests {
 		this.commandRunner.run("missing");
 	}
 
+	@Test
+	public void appArguments() throws Exception {
+		this.commandRunner.runAndHandleErrors("command", "--", "--debug", "bar");
+		verify(this.regularCommand).run("--", "--debug", "bar");
+		// When handled by the command itself it shouldn't cause the system property to be
+		// set
+		assertEquals(null, System.getProperty("debug"));
+	}
+
 	@Test
 	public void handlesSuccess() throws Exception {
 		int status = this.commandRunner.runAndHandleErrors("command");
@@ -150,6 +161,7 @@ public class CommandRunnerTests {
 	public void handlesExceptionWithDashD() throws Exception {
 		willThrow(new RuntimeException()).given(this.regularCommand).run();
 		int status = this.commandRunner.runAndHandleErrors("command", "-d");
+		assertEquals("true", System.getProperty("debug"));
 		assertThat(status, equalTo(1));
 		assertThat(this.calls, equalTo((Set<Call>) EnumSet.of(Call.ERROR_MESSAGE,
 				Call.PRINT_STACK_TRACE)));
@@ -159,6 +171,7 @@ public class CommandRunnerTests {
 	public void handlesExceptionWithDashDashDebug() throws Exception {
 		willThrow(new RuntimeException()).given(this.regularCommand).run();
 		int status = this.commandRunner.runAndHandleErrors("command", "--debug");
+		assertEquals("true", System.getProperty("debug"));
 		assertThat(status, equalTo(1));
 		assertThat(this.calls, equalTo((Set<Call>) EnumSet.of(Call.ERROR_MESSAGE,
 				Call.PRINT_STACK_TRACE)));