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JavaToEoTest.java
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JavaToEoTest.java
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/*
* The MIT License (MIT)
*
* Copyright (c) 2016-2024 Objectionary.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package it;
import com.jcabi.xml.XML;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Stream;
import org.eolang.jeo.representation.BytecodeRepresentation;
import org.eolang.parser.xmir.Xmir;
import org.hamcrest.MatcherAssert;
import org.hamcrest.Matchers;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
/**
* Integration test that checks that the Java code is transpiled to EO code correctly.
* @since 0.1
* @todo #84:90min Enable the {@link JavaToEoTest} test.
* The test should be enabled when the translation format is ready and
* the transformation itself from bytecode to EO is implemented correctly.
* We have to agree on the transformation rules first.
* When the test is enabled remove the {@link Disabled} annotation.
*/
final class JavaToEoTest {
/**
* Path to the EO resources.
*/
private static final String EO_RESOURCES = "transpilation/eo";
@ParameterizedTest(name = "{index} => {0}")
@MethodSource("arguments")
@Disabled
void compilesJavaAndTranspilesBytecodeToEo(final Resource resource) {
final String eolang = resource.eolang();
final String java = resource.java();
final XML actual = new BytecodeRepresentation(new JavaSourceClass(java).compile()).toEO();
MatcherAssert.assertThat(
String.format(
"The transpiled EO code is not as expected, we compared the next files:%n%s%n%s%nReceived XML:%n%n%s%nEO:%n%s%n",
eolang,
java,
actual,
new Xmir.Default(actual).toEO()
),
actual,
Matchers.equalTo(new EoSource(eolang).parse())
);
}
/**
* Provides expected and actual resources for the test.
* @return Stream of arguments.
*/
@SuppressWarnings("PMD.UnusedPrivateMethod")
private static Stream<Arguments> arguments() {
try {
return JavaToEoTest.resources(JavaToEoTest.EO_RESOURCES)
.stream()
.map(Arguments::of);
} catch (final IOException exception) {
throw new IllegalStateException(
String.format(
"Can't retrieve resources for the test from %s folder",
JavaToEoTest.EO_RESOURCES
),
exception
);
}
}
/**
* Retrieve resources from the folder.
* @param path Path to the folder.
* @return List of resources.
* @throws IOException If something goes wrong.
*/
private static List<Resource> resources(final String path) throws IOException {
final List<Resource> res = new ArrayList<>(0);
try (
BufferedReader br = new BufferedReader(
new InputStreamReader(
Thread.currentThread().getContextClassLoader().getResourceAsStream(path),
StandardCharsets.UTF_8
)
)
) {
String resource = br.readLine();
while (resource != null) {
if (resource.endsWith(".eo")) {
res.add(
new Resource(
path.substring(JavaToEoTest.EO_RESOURCES.length()),
resource.substring(0, resource.length() - 3)
)
);
} else {
res.addAll(JavaToEoTest.resources(String.format("%s/%s", path, resource)));
}
resource = br.readLine();
}
}
return res;
}
/**
* Pair of resources for the test.
* Can retrieve EO and Java files.
* @since 0.1
*/
private static final class Resource {
/**
* Subpath to the resource.
*/
private final String subpath;
/**
* Filename of the resource.
*/
private final String filename;
/**
* Constructor.
* @param subpath Subpath to the resource.
* @param filename Filename of the resource.
*/
private Resource(final String subpath, final String filename) {
this.subpath = subpath;
this.filename = filename;
}
@Override
public String toString() {
return String.format("%s.eo and %1$s.java", this.filename);
}
private String eolang() {
return String.format("transpilation/eo%s/%s.eo", this.subpath, this.filename);
}
private String java() {
return String.format("transpilation/java%s/%s.java", this.subpath, this.filename);
}
}
}