Handle mutliple files when copying and deleting

README.md

@@ -312,8 +312,8 @@ A scenario can define changes that should be applied to the source before each b
 - `clear-jars-cache-before`: Deletes the contents of the instrumented jars cache before the scenario is executed (`SCENARIO`), before cleanup (`CLEANUP`) or before the build is executed (`BUILD`).
 - `clear-project-cache-before`: Deletes the contents of the `.gradle` and `buildSrc/.gradle` project cache directories before the scenario is executed (`SCENARIO`), before cleanup (`CLEANUP`) or before the build is executed (`BUILD`).
 - `clear-transform-cache-before`: Deletes the contents of the transform cache before the scenario is executed (`SCENARIO`), before cleanup (`CLEANUP`) or before the build is executed (`BUILD`).
-- `copy-file`: Copies a file or a directory from one location to another. Has to specify a `source` and a `target` path; relative paths are resolved against the project directory.
-- `delete-file`: Deletes a file or a directory. Has to specify a `target` path; when relative it is resolved against the project directory.
+- `copy-file`: Copies a file or a directory from one location to another. Has to specify a `source` and a `target` path; relative paths are resolved against the project directory. Can take an array of operations.
+- `delete-file`: Deletes a file or a directory. Has to specify a `target` path; when relative it is resolved against the project directory. Can take an array of operations.
 - `git-checkout`: Checks out a specific commit for the build step, and a different one for the cleanup step.
 - `git-revert`: Reverts a given set of commits before the build and resets it afterward.
 - `iterations`: Number of builds to actually measure
@@ -346,10 +346,15 @@ They can be added to a scenario file like this:
         clear-build-cache-before = SCENARIO
         clear-transform-cache-before = BUILD
         show-build-cache-size = true
-        copy-file {
+        copy-file = {
             source = "../develocity.xml"
             target = ".mvn/develocity.xml"
         }
+        delete-file = [{
+            target = ".mvn/develocity.xml"
+        }, {
+            target = ".gradle"
+        }]
         git-checkout = {
             cleanup = "efb43a1"
             build = "master"

src/main/java/org/gradle/profiler/BuildToolCommandLineInvoker.java

@@ -16,7 +16,7 @@ public abstract class BuildToolCommandLineInvoker<T extends BuildToolCommandLine
     protected void doRun(T scenario, InvocationSettings settings, Consumer<BuildInvocationResult> resultConsumer, List<String> commandLine) {
         ScenarioContext scenarioContext = ScenarioContext.from(settings, scenario);
 
-        BuildMutator mutator = new CompositeBuildMutator(scenario.getBuildMutators());
+        BuildMutator mutator = CompositeBuildMutator.from(scenario.getBuildMutators());
         mutator.beforeScenario(scenarioContext);
         try {
             for (int iteration = 1; iteration <= scenario.getWarmUpCount(); iteration++) {

src/main/java/org/gradle/profiler/CompositeBuildMutator.java

@@ -1,5 +1,6 @@
 package org.gradle.profiler;
 
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
 import java.util.List;
@@ -8,11 +9,22 @@
 public class CompositeBuildMutator implements BuildMutator {
 	private final List<BuildMutator> mutators;
 
-	public CompositeBuildMutator(List<BuildMutator> mutators) {
-		this.mutators = mutators;
+	private CompositeBuildMutator(List<BuildMutator> mutators) {
+		this.mutators = ImmutableList.copyOf(mutators);
 	}
 
-	@Override
+    public static BuildMutator from(List<BuildMutator> mutators) {
+        switch (mutators.size()) {
+            case 0:
+                return BuildMutator.NOOP;
+            case 1:
+                return mutators.get(0);
+            default:
+                return new CompositeBuildMutator(mutators);
+        }
+    }
+
+    @Override
 	public void beforeScenario(ScenarioContext context) {
 		for (BuildMutator mutator : mutators) {
 			mutator.beforeScenario(context);

src/main/java/org/gradle/profiler/ConfigUtil.java

@@ -1,6 +1,7 @@
 package org.gradle.profiler;
 
 import com.typesafe.config.Config;
+import com.typesafe.config.ConfigException.WrongType;
 import com.typesafe.config.ConfigValue;
 
 import java.util.Collections;
@@ -23,6 +24,18 @@ public static Map<String, String> map(Config config, String key, Map<String, Str
 		}
 	}
 
+    public static List<? extends Config> configs(Config config, String key) {
+        if (config.hasPath(key)) {
+            try {
+                return config.getConfigList(key);
+            } catch (WrongType e) {
+                return Collections.singletonList(config.getConfig(key));
+            }
+        } else {
+            return Collections.emptyList();
+        }
+    }
+
 	public static Integer optionalInteger(Config config, String key) {
 		if (config.hasPath(key)) {
 			return Integer.valueOf(config.getString(key));

src/main/java/org/gradle/profiler/gradle/GradleScenarioInvoker.java

@@ -76,7 +76,7 @@ public void run(GradleScenarioDefinition scenario, InvocationSettings settings,
 
         daemonControl.stop(buildConfiguration);
 
-        BuildMutator mutator = new CompositeBuildMutator(scenario.getBuildMutators());
+        BuildMutator mutator = CompositeBuildMutator.from(scenario.getBuildMutators());
         ScenarioContext scenarioContext = ScenarioContext.from(settings, scenario);
         GradleClient gradleClient = scenario.getInvoker().getClient().create(buildConfiguration, settings);
         try {

src/main/java/org/gradle/profiler/mutations/ApplyProjectDependencyChangeMutator.java

@@ -179,7 +179,7 @@ public BuildMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
                 })
                 .collect(Collectors.toList());
 
-            return new CompositeBuildMutator(mutatorsForKey);
+            return CompositeBuildMutator.from(mutatorsForKey);
         }
 
         private ProjectCombinations getProjectCombinations(BuildMutatorConfiguratorSpec spec, int numberOfProjects, int appliedProjectDependencies) {

src/main/java/org/gradle/profiler/mutations/CopyFileMutator.java

@@ -3,12 +3,15 @@
 import com.google.common.base.Strings;
 import com.google.common.io.Files;
 import com.typesafe.config.Config;
+import org.gradle.profiler.BuildMutator;
+import org.gradle.profiler.CompositeBuildMutator;
 import org.gradle.profiler.ConfigUtil;
 import org.gradle.profiler.ScenarioContext;
 
 import java.io.File;
 import java.io.IOException;
 import java.io.UncheckedIOException;
+import java.util.stream.Collectors;
 
 public class CopyFileMutator extends AbstractFileSystemMutator {
 
@@ -42,8 +45,13 @@ public String toString() {
     public static class Configurator implements BuildMutatorConfigurator {
 
         @Override
-        public CopyFileMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
-            Config config = spec.getScenario().getConfig(key);
+        public BuildMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
+            return CompositeBuildMutator.from(ConfigUtil.configs(spec.getScenario(), key)
+                .stream().map(config -> createMutator(spec, config))
+                .collect(Collectors.toList()));
+        }
+
+        private static CopyFileMutator createMutator(BuildMutatorConfiguratorSpec spec, Config config) {
             String source = ConfigUtil.string(config, "source", null);
             String target = ConfigUtil.string(config, "target", null);
 

src/main/java/org/gradle/profiler/mutations/DeleteFileMutator.java

@@ -2,12 +2,15 @@
 
 import com.typesafe.config.Config;
 import org.apache.commons.io.FileUtils;
+import org.gradle.profiler.BuildMutator;
+import org.gradle.profiler.CompositeBuildMutator;
 import org.gradle.profiler.ConfigUtil;
 import org.gradle.profiler.ScenarioContext;
 
 import java.io.File;
 import java.io.IOException;
 import java.io.UncheckedIOException;
+import java.util.stream.Collectors;
 
 public class DeleteFileMutator extends AbstractFileSystemMutator {
 
@@ -32,8 +35,13 @@ public void beforeScenario(ScenarioContext context) {
     public static class Configurator implements BuildMutatorConfigurator {
 
         @Override
-        public DeleteFileMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
-            Config config = spec.getScenario().getConfig(key);
+        public BuildMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
+            return CompositeBuildMutator.from(ConfigUtil.configs(spec.getScenario(), key)
+                .stream().map(config -> createMutator(spec, config))
+                .collect(Collectors.toList()));
+        }
+
+        private static DeleteFileMutator createMutator(BuildMutatorConfiguratorSpec spec, Config config) {
             String target = ConfigUtil.string(config, "target");
             File projectDir = spec.getProjectDir();
             return new DeleteFileMutator(resolveProjectFile(projectDir, target));

src/main/java/org/gradle/profiler/mutations/FileChangeMutatorConfigurator.java

@@ -24,7 +24,7 @@ public BuildMutator configure(String key, BuildMutatorConfiguratorSpec spec) {
             mutatorsForKey.add(getBuildMutatorForFile(sourceFileToChange));
         }
 
-        return new CompositeBuildMutator(mutatorsForKey);
+        return CompositeBuildMutator.from(mutatorsForKey);
     }
 
     private BuildMutator getBuildMutatorForFile(File sourceFileToChange) {

src/test/groovy/org/gradle/profiler/mutations/CopyFileMutatorTest.groovy

@@ -11,7 +11,7 @@ class CopyFileMutatorTest extends AbstractMutatorTest {
         def target = new File(testDir, "nested/target.txt")
 
         def spec = mockConfigSpec("""{
-            copy-file {
+            copy-file = {
                 source = "source.txt"
                 target = "nested/target.txt"
             }
@@ -26,4 +26,35 @@ class CopyFileMutatorTest extends AbstractMutatorTest {
         target.exists()
         target.text == expectedContents
     }
+
+    def "copies multiple sets of source and target"() {
+        def testDir = tmpDir.newFolder()
+
+        def expectedContents = "Copy file from source to target"
+        def source = new File(testDir, "source.txt")
+        source.text = expectedContents
+        def target1 = new File(testDir, "nested/target1.txt")
+        def target2 = new File(testDir, "nested/target2.txt")
+
+        def spec = mockConfigSpec("""{
+            copy-file = [{
+                source = "source.txt"
+                target = "nested/target1.txt"
+            }, {
+                source = "source.txt"
+                target = "nested/target2.txt"
+            }]
+        }""")
+        _ * spec.projectDir >> testDir
+
+        when:
+        def mutator = new CopyFileMutator.Configurator().configure("copy-file", spec)
+        mutator.beforeScenario(buildContext)
+
+        then:
+        target1.exists()
+        target1.text == expectedContents
+        target2.exists()
+        target2.text == expectedContents
+    }
 }

src/test/groovy/org/gradle/profiler/mutations/DeleteFileMutatorTest.groovy

@@ -32,7 +32,7 @@ class DeleteFileMutatorTest extends AbstractMutatorTest {
         new File(testDir, "file.txt").text = expectedContents
 
         def spec = mockConfigSpec("""{
-            delete-file {
+            delete-file = {
                 target = "target-dir"
             }
         }""")
@@ -51,7 +51,7 @@ class DeleteFileMutatorTest extends AbstractMutatorTest {
         def testFile = new File(testDir, "missing-file.txt")
 
         def spec = mockConfigSpec("""{
-            delete-file {
+            delete-file = {
                 target = "missing-file.txt"
             }
         }""")
@@ -64,4 +64,31 @@ class DeleteFileMutatorTest extends AbstractMutatorTest {
         then: "File should not exist"
         !testFile.exists()
     }
+
+    def "deletes multiple files"() {
+        def testDir = tmpDir.newFolder()
+        def expectedContents = "Copy file from source to target"
+        def file1 = new File(testDir, "file1.txt")
+        file1.text = expectedContents
+        def file2 = new File(testDir, "file2.txt")
+        file2.text = expectedContents
+
+        def spec = mockConfigSpec("""{
+            delete-file = [{
+                target = "file1.txt"
+            }, {
+                target = "file2.txt"
+            }]
+        }""")
+        _ * spec.projectDir >> testDir
+
+        when:
+        def mutator = new DeleteFileMutator.Configurator().configure("delete-file", spec)
+        mutator.beforeScenario(buildContext)
+
+        then: "Files should not exist"
+        !file1.exists()
+        !file2.exists()
+    }
+
 }