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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.ast.body.BodyDeclaration;
import com.github.javaparser.ast.stmt.Statement;
import org.junit.Ignore;
import org.junit.Test;
import static com.github.javaparser.ParseStart.CLASS_BODY;
import static com.github.javaparser.ParseStart.STATEMENT;
import static com.github.javaparser.ParserConfiguration.LanguageLevel.JAVA_10;
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 Java10ValidatorTest {
public static final JavaParser javaParser = new JavaParser(new ParserConfiguration().setLanguageLevel(JAVA_10));
@Test
public void varAllowedInLocalVariableDeclaration() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a = 5;"));
assertNoProblems(result);
}
@Test
public void varAllowedInForEach() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("for(var a : as){}"));
assertNoProblems(result);
}
@Test
public void varAllowedInOldFor() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("for(var a = 5;a<9;a++){}"));
assertNoProblems(result);
}
@Test
public void varNotAllowedInCast() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("int a = (var)20;"));
assertNoProblems(result);
}
@Test
public void varNotAllowedInTryWithResources() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("try(var f = new FileReader(\"\")){ }catch (Exception e){ }"));
assertProblems(result, "(line 1,col 5) \"var\" is not allowed here.");
}
@Test
public void varNotAllowedInField() {
ParseResult<BodyDeclaration<?>> result = javaParser.parse(CLASS_BODY, provider("var a = 20;"));
assertProblems(result, "(line 1,col 1) \"var\" is not allowed here.");
}
@Test
public void varNotAllowedInTypeArguments() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("new X<var>();"));
assertProblems(result, "(line 1,col 7) \"var\" is not allowed here.");
}
@Test
public void varNotAllowedInLambdaParameters() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("x((var x) -> null);"));
assertProblems(result, "(line 1,col 4) \"var\" is not allowed here.");
}
@Test
public void emptyInitializerNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a;"));
assertProblems(result, "(line 1,col 1) \"var\" needs an initializer.");
}
@Test
public void multipleVariablesNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a=1, b=2;"));
assertProblems(result, "(line 1,col 1) \"var\" only takes a single variable.");
}
@Test
public void nullVariablesNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a=null;"));
assertProblems(result, "(line 1,col 1) \"var\" cannot infer type from just null.");
}
@Test
public void arrayDimensionBracketsNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a=new String[]{};"));
assertProblems(result, "(line 1,col 1) \"var\" cannot infer array types.");
}
// This is pretty hard to impossible to implement correctly with just the AST.
@Ignore
@Test
public void selfReferenceNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a=a;"));
assertProblems(result, "");
}
// Can be implemented once https://github.com/javaparser/javaparser/issues/1434 is implemented.
@Ignore
@Test
public void polyExpressionAsInitializerNotAllowed() {
ParseResult<Statement> result = javaParser.parse(STATEMENT, provider("var a=new ArrayList<>();"));
assertProblems(result, "");
}
}
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