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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.apache.sling.scripting.sightly.impl.compiler;

import java.util.List;

import org.apache.sling.scripting.sightly.compiler.CompilationResult;
import org.apache.sling.scripting.sightly.compiler.CompilationUnit;
import org.apache.sling.scripting.sightly.compiler.CompilerMessage;
import org.apache.sling.scripting.sightly.compiler.SightlyCompiler;
import org.apache.sling.scripting.sightly.impl.TestUtils;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

@RunWith(PowerMockRunner.class)
@PrepareForTest(SightlyCompiler.class)
public class SightlyCompilerTest {

    private SightlyCompiler compiler = new SightlyCompiler();

    @Test
    public void testEmptyExpression() {
        CompilationResult result = compile("/empty-expression.html");
        assertTrue("Didn't expect any warnings or errors.", result.getErrors().size() == 0 && result.getWarnings().size() == 0);
    }

    @Test
    public void testMissingExplicitContext() {
        for (String s : new String[] {"", "-win", "-mac"}) {
            String script = "/missing-explicit-context" + s + ".html";
            testMissingExplicitContext(script);
        }
    }

    private void testMissingExplicitContext(String script) {
        CompilationResult result = compile(script);
        List<CompilerMessage> warnings = result.getWarnings();
        assertTrue(script + ": Expected compilation warnings.", warnings.size() == 1);
        CompilerMessage warningMessage = warnings.get(0);
        assertEquals(script + ": Expected warning on a different line.", 18, warningMessage.getLine());
        assertEquals(script + ": Expected warning on a different column.", 14, warningMessage.getColumn());
        assertTrue(script.equals(warningMessage.getScriptName()));
        assertEquals("${some.value}: Element script requires that all expressions have an explicit context specified. The expression will" +
                " be replaced with an empty string.", warningMessage.getMessage());
    }

    @Test
    public void testMissingExplicitContextOnWindows() {
        PowerMockito.mockStatic(System.class);
        PowerMockito.when(System.lineSeparator()).thenReturn("\r\n");

        for (String s : new String[] {"", "-win", "-mac"}) {
            String script = "/missing-explicit-context" + s + ".html";
            testMissingExplicitContext(script);
        }
    }

    @Test
    public void testMissingExplicitContextOnMac() {
        PowerMockito.mockStatic(System.class);
        PowerMockito.when(System.lineSeparator()).thenReturn("\r");

        for (String s : new String[] {"", "-win", "-mac"}) {
            String script = "/missing-explicit-context" + s + ".html";
            testMissingExplicitContext(script);
        }
    }

    @Test
    public void testSensitiveAttributes() {
        String script = "/sensitive-attributes.html";
        CompilationResult result = compile(script);
        List<CompilerMessage> warnings = result.getWarnings();
        assertTrue("Expected compilation warnings.", warnings.size() == 2);
        CompilerMessage _1stWarning = warnings.get(0);
        CompilerMessage _2ndWarning = warnings.get(1);
        assertEquals(script, _1stWarning.getScriptName());
        assertEquals("Expected warning on a different line.", 17, _1stWarning.getLine());
        assertEquals("Expected warning on a different line.", 18, _2ndWarning.getLine());
        assertEquals(script, _2ndWarning.getScriptName());
        assertEquals("${style.string}: Expressions within the value of attribute style need to have an explicit context option. The " +
                "expression will be replaced with an empty string.", _1stWarning.getMessage());
        assertEquals("${onclick.action}: Expressions within the value of attribute onclick need to have an explicit context option. The " +
                "expression will be replaced with an empty string.", _2ndWarning.getMessage());

    }

    @Test
    public void testErrorReporting1() {
        String script = "/error-1.html";
        CompilationResult result = compile(script);
        List<CompilerMessage> errors = result.getErrors();
        assertTrue("Expected compilation errors.", errors.size() == 1);
        CompilerMessage error = errors.get(0);
        assertEquals("Error is not reported at the expected line.", 18, error.getLine());
    }

    private CompilationResult compile(String file) {
        CompilationUnit compilationUnit = TestUtils.readScriptFromClasspath(file);
        return compiler.compile(compilationUnit);
    }


}