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package com.github.javaparser.ast.validator;
import com.github.javaparser.JavaParser;
import com.github.javaparser.ParseResult;
import com.github.javaparser.ParserConfiguration;
import com.github.javaparser.Problem;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.expr.Expression;
import com.github.javaparser.ast.stmt.Statement;
import com.github.javaparser.ast.type.ClassOrInterfaceType;
import com.github.javaparser.ast.type.UnionType;
import org.junit.Test;
import java.util.*;
import static com.github.javaparser.ParseStart.COMPILATION_UNIT;
import static com.github.javaparser.ParseStart.EXPRESSION;
import static com.github.javaparser.ParseStart.STATEMENT;
import static com.github.javaparser.ParserConfiguration.LanguageLevel.*;
import static com.github.javaparser.Providers.provider;
import static com.github.javaparser.utils.TestUtils.assertNoProblems;
import static com.github.javaparser.utils.TestUtils.assertProblems;
public class Java7ValidatorTest {
public static final JavaParser javaParser = new JavaParser(new ParserConfiguration().setLanguageLevel(JAVA_7));
@Test
public void generics() {
ParseResult<CompilationUnit> result = javaParser.parse(COMPILATION_UNIT, provider("class X<A>{List<String> b = new ArrayList<>();}"));
assertNoProblems(result);
}
@Test
public void defaultMethodWithoutBody() {
ParseResult<CompilationUnit> result = javaParser.parse(COMPILATION_UNIT, provider("interface X {default void a();}"));
assertProblems(result, "(line 1,col 14) 'default' is not allowed here.");
}
@Test
public void tryWithoutAnything() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try{}"));
assertProblems(result, "(line 1,col 1) Try has no finally, no catch, and no resources.");
}
@Test
public void tryWithResourceVariableDeclaration() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try(Reader r = new Reader()){}"));
assertNoProblems(result);
}
@Test
public void tryWithResourceReference() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try(a.b.c){}"));
assertProblems(result, "(line 1,col 1) Try with resources only supports variable declarations.");
}
@Test
public void stringsInSwitch() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("switch(x){case \"abc\": ;}"));
assertNoProblems(result);
}
@Test
public void binaryIntegerLiterals() {
ParseResult<Expression> result = javaParser.parse(EXPRESSION, provider("0b01"));
assertNoProblems(result);
}
@Test
public void underscoresInIntegerLiterals() {
ParseResult<Expression> result = javaParser.parse(EXPRESSION, provider("1_000_000"));
assertNoProblems(result);
}
@Test
public void multiCatch() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try{}catch(Abc|Def e){}"));
assertNoProblems(result);
}
@Test
public void multiCatchWithoutElements() {
UnionType unionType = new UnionType();
List<Problem> problems = new ArrayList<>();
new Java7Validator().accept(unionType, new ProblemReporter(problems::add));
assertProblems(problems, "UnionType.elements can not be empty.");
}
@Test
public void multiCatchWithOneElement() {
UnionType unionType = new UnionType();
unionType.getElements().add(new ClassOrInterfaceType());
List<Problem> problems = new ArrayList<>();
new Java7Validator().accept(unionType, new ProblemReporter(problems::add));
assertProblems(problems, "Union type (multi catch) must have at least two elements.");
}
@Test
public void noLambdas() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("a(() -> 1);"));
assertProblems(result, "(line 1,col 3) Lambdas are not supported.");
}
}
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