eclipse/plugins/com.android.ide.eclipse.tests/src/com/android/ide/eclipse/adt/internal/lint/ProjectLintConfigurationTest.java

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
 *
 * 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 com.android.ide.eclipse.adt.internal.lint;

import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.ide.eclipse.adt.internal.editors.layout.refactoring.AdtProjectTest;
import com.android.tools.lint.checks.DuplicateIdDetector;
import com.android.tools.lint.checks.UnusedResourceDetector;
import com.android.tools.lint.client.api.Configuration;
import com.android.tools.lint.client.api.JavaParser;
import com.android.tools.lint.client.api.LintClient;
import com.android.tools.lint.client.api.XmlParser;
import com.android.tools.lint.detector.api.Context;
import com.android.tools.lint.detector.api.Issue;
import com.android.tools.lint.detector.api.Location;
import com.android.tools.lint.detector.api.Project;
import com.android.tools.lint.detector.api.Severity;
import com.android.tools.lint.detector.api.TextFormat;

import org.eclipse.core.resources.IProject;

import java.io.File;

@SuppressWarnings("javadoc")
public class ProjectLintConfigurationTest extends AdtProjectTest {
    public void testBasic() {
        Configuration parent = null;
        LintClient client = new TestClient();

        File dir = getTargetDir();
        if (!dir.exists()) {
            boolean ok = dir.mkdirs();
            assertTrue(dir.getPath(), ok);
        }
        Project project = client.getProject(dir, dir);

        ProjectLintConfiguration config =
                new ProjectLintConfiguration(client, project, parent, false /*fatalOnly*/);

        Issue usuallyEnabledIssue = DuplicateIdDetector.WITHIN_LAYOUT;
        Issue usuallyDisabledIssue = UnusedResourceDetector.ISSUE_IDS;

        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        config.setSeverity(usuallyEnabledIssue, Severity.IGNORE);
        config.setSeverity(usuallyDisabledIssue, Severity.ERROR);
        assertFalse(config.isEnabled(usuallyEnabledIssue));
        assertTrue(config.isEnabled(usuallyDisabledIssue));

        // Make a NEW config object to ensure the state is persisted properly, not just
        // kept on the config object!
        config = new ProjectLintConfiguration(client, project, parent, false /*fatalOnly*/);
        assertFalse(config.isEnabled(usuallyEnabledIssue));
        assertTrue(config.isEnabled(usuallyDisabledIssue));
    }

    public void testInheritance() {
        Configuration parent = null;
        LintClient client = new TestClient();

        File dir = getTargetDir();
        assertTrue(dir.mkdirs());
        Project project = client.getProject(dir, dir);

        File otherDir = new File(dir, "otherConfig");
        assertTrue(otherDir.mkdir());
        Project otherProject = client.getProject(otherDir, otherDir);

        ProjectLintConfiguration otherConfig =
                new ProjectLintConfiguration(client, otherProject, parent, false);

        ProjectLintConfiguration config =
                new ProjectLintConfiguration(client, project, otherConfig, false);

        Issue usuallyEnabledIssue = DuplicateIdDetector.WITHIN_LAYOUT;
        Issue usuallyDisabledIssue = UnusedResourceDetector.ISSUE_IDS;

        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        otherConfig.setSeverity(usuallyEnabledIssue, Severity.IGNORE);
        otherConfig.setSeverity(usuallyDisabledIssue, Severity.ERROR);

        // Ensure inheritance works
        assertFalse(config.isEnabled(usuallyEnabledIssue));
        assertTrue(config.isEnabled(usuallyDisabledIssue));

        // Revert
        otherConfig.setSeverity(usuallyEnabledIssue, Severity.ERROR);
        otherConfig.setSeverity(usuallyDisabledIssue, Severity.IGNORE);
        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        // Now override in child
        config.setSeverity(usuallyEnabledIssue, Severity.ERROR);
        config.setSeverity(usuallyDisabledIssue, Severity.IGNORE);
        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        // Now change in parent: no change in child
        otherConfig.setSeverity(usuallyEnabledIssue, Severity.IGNORE);
        otherConfig.setSeverity(usuallyDisabledIssue, Severity.ERROR);
        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));
        assertFalse(otherConfig.isEnabled(usuallyEnabledIssue));
        assertTrue(otherConfig.isEnabled(usuallyDisabledIssue));

        // Clear override in child
        config.setSeverity(usuallyEnabledIssue, null);
        config.setSeverity(usuallyDisabledIssue, null);
        assertFalse(config.isEnabled(usuallyEnabledIssue));
        assertTrue(config.isEnabled(usuallyDisabledIssue));
    }

    public void testBulkEditing() {
        Configuration parent = null;
        LintClient client = new TestClient();

        File dir = getTargetDir();
        assertTrue(dir.mkdirs());
        Project project = client.getProject(dir, dir);

        ProjectLintConfiguration config =
                new ProjectLintConfiguration(client, project, parent, false /*fatalOnly*/);

        Issue usuallyEnabledIssue = DuplicateIdDetector.WITHIN_LAYOUT;
        Issue usuallyDisabledIssue = UnusedResourceDetector.ISSUE_IDS;

        assertTrue(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        config.setSeverity(usuallyEnabledIssue, Severity.IGNORE);
        assertFalse(config.isEnabled(usuallyEnabledIssue));
        assertFalse(config.isEnabled(usuallyDisabledIssue));

        File configFile = new File(dir, "lint.xml");
        assertTrue(configFile.getPath(), configFile.exists());
        long lastModified = configFile.lastModified();

        // We need to make sure that the timestamp of the file is a couple of seconds
        // after the last update or we can't tell whether the file was updated or not

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            System.err.println("Sleep interrupted, test may not work.");
        }
        config.startBulkEditing();
        assertFalse(lastModified < configFile.lastModified());
        assertEquals(lastModified, configFile.lastModified());
        config.setSeverity(usuallyDisabledIssue, Severity.ERROR);
        config.finishBulkEditing();
        assertTrue(lastModified < configFile.lastModified());

        assertTrue(config.isEnabled(usuallyDisabledIssue));
    }

    public void testPersistence() {
        // Ensure that we use the same configuration object repeatedly for a
        // single project, such that we don't recompute and parse XML for each and
        // every lint run!
        IProject project = getProject();
        TestClient client = new TestClient();
        ProjectLintConfiguration config1 = ProjectLintConfiguration.get(client, project, false);
        ProjectLintConfiguration config2 = ProjectLintConfiguration.get(client, project, false);
        assertSame(config1, config2);
    }

    @Override
    protected File getTargetDir() {
        File targetDir = new File(getTempDir(), getClass().getSimpleName() + "_" + getName());
        addCleanupDir(targetDir);
        return targetDir;
    }

    private static class TestClient extends LintClient {
        @Override
        public void report(@NonNull Context context, @NonNull Issue issue,
                @NonNull Severity severity, @Nullable Location location,
                @NonNull String message, @NonNull TextFormat format) {
        }

        @Override
        public void log(@NonNull Severity severity, @Nullable Throwable exception,
                @Nullable String format, @Nullable Object... args) {
        }

        @Override
        public XmlParser getXmlParser() {
            return null;
        }

        @Override
        public @NonNull String readFile(@NonNull File file) {
            return null;
        }

        @Override
        public JavaParser getJavaParser(@Nullable Project project) {
            return null;
        }
    }
}