libs/vogar-expect/src/vogar/expect/ExpectationStore.java - platform/cts - Git at Google

 /*
  * Copyright (C) 2010 The Android Open Source Project
  *
  * 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 vogar.expect;

 import com.android.json.stream.JsonReader;
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
 import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.net.URL;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.regex.Pattern;
 import vogar.expect.util.Log;

 /**
  * A database of expected outcomes. Entries in this database come in two forms.
  * <ul>
  *   <li>Outcome expectations name an outcome (or its prefix, such as
  *       "java.util"), its expected result, and an optional pattern to match
  *       the expected output.
  *   <li>Failure expectations include a pattern that may match the output of any
  *       outcome. These expectations are useful for hiding failures caused by
  *       cross-cutting features that aren't supported.
  * </ul>
  *
  * <p>If an outcome matches both an outcome expectation and a failure
  * expectation, the outcome expectation will be returned.
  */
 public final class ExpectationStore {

     /** The pattern to use when no expected output is specified */
     private static final Pattern MATCH_ALL_PATTERN
             = Pattern.compile(".*", Pattern.MULTILINE | Pattern.DOTALL);

     /** The expectation of a general successful run. */
     private static final Expectation SUCCESS = new Expectation(Result.SUCCESS, MATCH_ALL_PATTERN,
             Collections.<String>emptySet(), "", -1);

     private static final int PATTERN_FLAGS = Pattern.MULTILINE | Pattern.DOTALL;

     private final Map<String, Expectation> outcomes = new LinkedHashMap<String, Expectation>();
     private final Map<String, Expectation> failures = new LinkedHashMap<String, Expectation>();

     private ExpectationStore() {}

     /**
      * Finds the expected result for the specified action or outcome name. This
      * returns a value for all names, even if no explicit expectation was set.
      */
     public Expectation get(String name) {
         Expectation byName = getByNameOrPackage(name);
         return byName != null ? byName : SUCCESS;
     }

     /**
      * Finds the expected result for the specified outcome after it has
      * completed. Unlike {@code get()}, this also takes into account the
      * outcome's output.
      *
      * <p>For outcomes that have both a name match and an output match,
      * exact name matches are preferred, then output matches, then inexact
      * name matches.
      */
     public Expectation get(Outcome outcome) {
         Expectation exactNameMatch = outcomes.get(outcome.getName());
         if (exactNameMatch != null) {
             return exactNameMatch;
         }

         for (Map.Entry<String, Expectation> entry : failures.entrySet()) {
             if (entry.getValue().matches(outcome)) {
                 return entry.getValue();
             }
         }

         Expectation byName = getByNameOrPackage(outcome.getName());
         return byName != null ? byName : SUCCESS;
     }

     private Expectation getByNameOrPackage(String name) {
         while (true) {
             Expectation expectation = outcomes.get(name);
             if (expectation != null) {
                 return expectation;
             }

             int dotOrHash = Math.max(name.lastIndexOf('.'), name.lastIndexOf('#'));
             if (dotOrHash == -1) {
                 return null;
             }

             name = name.substring(0, dotOrHash);
         }
     }

     public static ExpectationStore parse(Set<File> expectationFiles, ModeId mode) throws IOException {
         ExpectationStore result = new ExpectationStore();
         for (File f : expectationFiles) {
             if (f.exists()) {
                 result.parse(f, mode);
             }
         }
         return result;
     }

     /**
      * Create an {@link ExpectationStore} that is populated from expectation resources.
      * @param owningClass the class from which the resources are loaded.
      * @param expectationResources the set of paths to the expectation resources; the paths are
      * either relative to the owning class, or absolute (starting with a /).
      * @param mode the mode within which the tests are to be run.
      * @return the populated {@link ExpectationStore}.
      * @throws IOException if there was a problem loading
      */
     public static ExpectationStore parseResources(
             Class<?> owningClass, Set<String> expectationResources, ModeId mode)
             throws IOException {
         ExpectationStore result = new ExpectationStore();
         for (String expectationsPath : expectationResources) {
             URL url = owningClass.getResource(expectationsPath);
             if (url == null) {
                 Log.warn("Could not find resource '" + expectationsPath
                         + "' relative to " + owningClass);
             } else {
                 result.parse(url, mode);
             }
         }
         return result;
     }

     private void parse(URL url, ModeId mode) throws IOException {
         Log.verbose("loading expectations from " + url);

         try (InputStream is = url.openStream();
              Reader reader = new InputStreamReader(is)) {
             parse(reader, url.toString(), mode);
         }
     }

     public void parse(File expectationsFile, ModeId mode) throws IOException {
         Log.verbose("loading expectations file " + expectationsFile);

         try (Reader fileReader = new FileReader(expectationsFile)) {
             String source = expectationsFile.toString();
             parse(fileReader, source, mode);
         }
     }

     private void parse(Reader reader, String source, ModeId mode) throws IOException {
         int count = 0;
         try (JsonReader jsonReader = new JsonReader(reader)) {
             jsonReader.setLenient(true);
             jsonReader.beginArray();
             while (jsonReader.hasNext()) {
                 readExpectation(jsonReader, mode);
                 count++;
             }
             jsonReader.endArray();

             Log.verbose("loaded " + count + " expectations from " + source);
         }
     }

     private void readExpectation(JsonReader reader, ModeId mode) throws IOException {
         boolean isFailure = false;
         Result result = Result.EXEC_FAILED;
         Pattern pattern = MATCH_ALL_PATTERN;
         Set<String> names = new LinkedHashSet<String>();
         Set<String> tags = new LinkedHashSet<String>();
         Set<ModeId> modes = null;
         String description = "";
         long buganizerBug = -1;

         reader.beginObject();
         while (reader.hasNext()) {
             String name = reader.nextName();
             if (name.equals("result")) {
                 result = Result.valueOf(reader.nextString());
             } else if (name.equals("name")) {
                 names.add(reader.nextString());
             } else if (name.equals("names")) {
                 readStrings(reader, names);
             } else if (name.equals("failure")) {
                 // isFailure is somewhat arbitrarily keyed on the existence of a "failure"
                 // element instead of looking at the "result" field. There are only about 5
                 // expectations in our entire expectation store that have this tag.
                 //
                 // TODO: Get rid of it and the "failures" map and just use the outcomes
                 // map for everything. Both uses seem useless.
                 isFailure = true;
                 names.add(reader.nextString());
             } else if (name.equals("pattern")) {
                 pattern = Pattern.compile(reader.nextString(), PATTERN_FLAGS);
             } else if (name.equals("substring")) {
                 pattern = Pattern.compile(".*" + Pattern.quote(reader.nextString()) + ".*", PATTERN_FLAGS);
             } else if (name.equals("tags")) {
                 readStrings(reader, tags);
             } else if (name.equals("description")) {
                 Iterable<String> split = Splitter.on("\n").omitEmptyStrings().trimResults().split(reader.nextString());
                 description = Joiner.on("\n").join(split);
             } else if (name.equals("bug")) {
                 buganizerBug = reader.nextLong();
             } else if (name.equals("modes")) {
                 modes = readModes(reader);
             } else {
                 Log.warn("Unhandled name in expectations file: " + name);
                 reader.skipValue();
             }
         }
         reader.endObject();

         if (names.isEmpty()) {
             throw new IllegalArgumentException("Missing 'name' or 'failure' key in " + reader);
         }
         if (modes != null && !modes.contains(mode)) {
             return;
         }

         Expectation expectation = new Expectation(result, pattern, tags, description, buganizerBug);
         Map<String, Expectation> map = isFailure ? failures : outcomes;
         for (String name : names) {
             if (map.put(name, expectation) != null) {
                 throw new IllegalArgumentException("Duplicate expectations for " + name);
             }
         }
     }

     private void readStrings(JsonReader reader, Set<String> output) throws IOException {
         reader.beginArray();
         while (reader.hasNext()) {
             output.add(reader.nextString());
         }
         reader.endArray();
     }

     private Set<ModeId> readModes(JsonReader reader) throws IOException {
         Set<ModeId> result = new LinkedHashSet<ModeId>();
         reader.beginArray();
         while (reader.hasNext()) {
             result.add(ModeId.valueOf(reader.nextString().toUpperCase()));
         }
         reader.endArray();
         return result;
     }

     public Map<String, Expectation> getAllOutComes() {
         return outcomes;
     }

     public Map<String, Expectation> getAllFailures() {
         return failures;
     }
 }
	/*
	* Copyright (C) 2010 The Android Open Source Project
	*
	* 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 vogar.expect;

	import com.android.json.stream.JsonReader;
	import com.google.common.base.Joiner;
	import com.google.common.base.Splitter;
	import java.io.File;
	import java.io.FileReader;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.Reader;
	import java.net.URL;
	import java.util.Collections;
	import java.util.LinkedHashMap;
	import java.util.LinkedHashSet;
	import java.util.Map;
	import java.util.Set;
	import java.util.regex.Pattern;
	import vogar.expect.util.Log;

	/**
	* A database of expected outcomes. Entries in this database come in two forms.
	* <ul>
	* <li>Outcome expectations name an outcome (or its prefix, such as
	* "java.util"), its expected result, and an optional pattern to match
	* the expected output.
	* <li>Failure expectations include a pattern that may match the output of any
	* outcome. These expectations are useful for hiding failures caused by
	* cross-cutting features that aren't supported.
	* </ul>
	*
	* <p>If an outcome matches both an outcome expectation and a failure
	* expectation, the outcome expectation will be returned.
	*/
	public final class ExpectationStore {

	/** The pattern to use when no expected output is specified */
	private static final Pattern MATCH_ALL_PATTERN
	= Pattern.compile(".*", Pattern.MULTILINE \| Pattern.DOTALL);

	/** The expectation of a general successful run. */
	private static final Expectation SUCCESS = new Expectation(Result.SUCCESS, MATCH_ALL_PATTERN,
	Collections.<String>emptySet(), "", -1);

	private static final int PATTERN_FLAGS = Pattern.MULTILINE \| Pattern.DOTALL;

	private final Map<String, Expectation> outcomes = new LinkedHashMap<String, Expectation>();
	private final Map<String, Expectation> failures = new LinkedHashMap<String, Expectation>();

	private ExpectationStore() {}

	/**
	* Finds the expected result for the specified action or outcome name. This
	* returns a value for all names, even if no explicit expectation was set.
	*/
	public Expectation get(String name) {
	Expectation byName = getByNameOrPackage(name);
	return byName != null ? byName : SUCCESS;
	}

	/**
	* Finds the expected result for the specified outcome after it has
	* completed. Unlike {@code get()}, this also takes into account the
	* outcome's output.
	*
	* <p>For outcomes that have both a name match and an output match,
	* exact name matches are preferred, then output matches, then inexact
	* name matches.
	*/
	public Expectation get(Outcome outcome) {
	Expectation exactNameMatch = outcomes.get(outcome.getName());
	if (exactNameMatch != null) {
	return exactNameMatch;
	}

	for (Map.Entry<String, Expectation> entry : failures.entrySet()) {
	if (entry.getValue().matches(outcome)) {
	return entry.getValue();
	}
	}

	Expectation byName = getByNameOrPackage(outcome.getName());
	return byName != null ? byName : SUCCESS;
	}

	private Expectation getByNameOrPackage(String name) {
	while (true) {
	Expectation expectation = outcomes.get(name);
	if (expectation != null) {
	return expectation;
	}

	int dotOrHash = Math.max(name.lastIndexOf('.'), name.lastIndexOf('#'));
	if (dotOrHash == -1) {
	return null;
	}

	name = name.substring(0, dotOrHash);
	}
	}

	public static ExpectationStore parse(Set<File> expectationFiles, ModeId mode) throws IOException {
	ExpectationStore result = new ExpectationStore();
	for (File f : expectationFiles) {
	if (f.exists()) {
	result.parse(f, mode);
	}
	}
	return result;
	}

	/**
	* Create an {@link ExpectationStore} that is populated from expectation resources.
	* @param owningClass the class from which the resources are loaded.
	* @param expectationResources the set of paths to the expectation resources; the paths are
	* either relative to the owning class, or absolute (starting with a /).
	* @param mode the mode within which the tests are to be run.
	* @return the populated {@link ExpectationStore}.
	* @throws IOException if there was a problem loading
	*/
	public static ExpectationStore parseResources(
	Class<?> owningClass, Set<String> expectationResources, ModeId mode)
	throws IOException {
	ExpectationStore result = new ExpectationStore();
	for (String expectationsPath : expectationResources) {
	URL url = owningClass.getResource(expectationsPath);
	if (url == null) {
	Log.warn("Could not find resource '" + expectationsPath
	+ "' relative to " + owningClass);
	} else {
	result.parse(url, mode);
	}
	}
	return result;
	}

	private void parse(URL url, ModeId mode) throws IOException {
	Log.verbose("loading expectations from " + url);

	try (InputStream is = url.openStream();
	Reader reader = new InputStreamReader(is)) {
	parse(reader, url.toString(), mode);
	}
	}

	public void parse(File expectationsFile, ModeId mode) throws IOException {
	Log.verbose("loading expectations file " + expectationsFile);

	try (Reader fileReader = new FileReader(expectationsFile)) {
	String source = expectationsFile.toString();
	parse(fileReader, source, mode);
	}
	}

	private void parse(Reader reader, String source, ModeId mode) throws IOException {
	int count = 0;
	try (JsonReader jsonReader = new JsonReader(reader)) {
	jsonReader.setLenient(true);
	jsonReader.beginArray();
	while (jsonReader.hasNext()) {
	readExpectation(jsonReader, mode);
	count++;
	}
	jsonReader.endArray();

	Log.verbose("loaded " + count + " expectations from " + source);
	}
	}

	private void readExpectation(JsonReader reader, ModeId mode) throws IOException {
	boolean isFailure = false;
	Result result = Result.EXEC_FAILED;
	Pattern pattern = MATCH_ALL_PATTERN;
	Set<String> names = new LinkedHashSet<String>();
	Set<String> tags = new LinkedHashSet<String>();
	Set<ModeId> modes = null;
	String description = "";
	long buganizerBug = -1;

	reader.beginObject();
	while (reader.hasNext()) {
	String name = reader.nextName();
	if (name.equals("result")) {
	result = Result.valueOf(reader.nextString());
	} else if (name.equals("name")) {
	names.add(reader.nextString());
	} else if (name.equals("names")) {
	readStrings(reader, names);
	} else if (name.equals("failure")) {
	// isFailure is somewhat arbitrarily keyed on the existence of a "failure"
	// element instead of looking at the "result" field. There are only about 5
	// expectations in our entire expectation store that have this tag.
	//
	// TODO: Get rid of it and the "failures" map and just use the outcomes
	// map for everything. Both uses seem useless.
	isFailure = true;
	names.add(reader.nextString());
	} else if (name.equals("pattern")) {
	pattern = Pattern.compile(reader.nextString(), PATTERN_FLAGS);
	} else if (name.equals("substring")) {
	pattern = Pattern.compile("." + Pattern.quote(reader.nextString()) + ".", PATTERN_FLAGS);
	} else if (name.equals("tags")) {
	readStrings(reader, tags);
	} else if (name.equals("description")) {
	Iterable<String> split = Splitter.on("\n").omitEmptyStrings().trimResults().split(reader.nextString());
	description = Joiner.on("\n").join(split);
	} else if (name.equals("bug")) {
	buganizerBug = reader.nextLong();
	} else if (name.equals("modes")) {
	modes = readModes(reader);
	} else {
	Log.warn("Unhandled name in expectations file: " + name);
	reader.skipValue();
	}
	}
	reader.endObject();

	if (names.isEmpty()) {
	throw new IllegalArgumentException("Missing 'name' or 'failure' key in " + reader);
	}
	if (modes != null && !modes.contains(mode)) {
	return;
	}

	Expectation expectation = new Expectation(result, pattern, tags, description, buganizerBug);
	Map<String, Expectation> map = isFailure ? failures : outcomes;
	for (String name : names) {
	if (map.put(name, expectation) != null) {
	throw new IllegalArgumentException("Duplicate expectations for " + name);
	}
	}
	}

	private void readStrings(JsonReader reader, Set<String> output) throws IOException {
	reader.beginArray();
	while (reader.hasNext()) {
	output.add(reader.nextString());
	}
	reader.endArray();
	}

	private Set<ModeId> readModes(JsonReader reader) throws IOException {
	Set<ModeId> result = new LinkedHashSet<ModeId>();
	reader.beginArray();
	while (reader.hasNext()) {
	result.add(ModeId.valueOf(reader.nextString().toUpperCase()));
	}
	reader.endArray();
	return result;
	}

	public Map<String, Expectation> getAllOutComes() {
	return outcomes;
	}

	public Map<String, Expectation> getAllFailures() {
	return failures;
	}
	}