package com.github.sommeri.less4j.resources;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.fail;
import org.junit.Test;
import com.github.sommeri.less4j.Less4jException;
import com.github.sommeri.less4j.LessCompiler;
import com.github.sommeri.less4j.LessSource.StringSource;
import com.github.sommeri.less4j.core.DefaultLessCompiler;
public class Less4jExceptionTest {
@Test
public void testCompileError() {
String less = ".class { margin: @undefined; }";
String expectedError = "Could not compile less. 1 error(s) occurred:\nERROR 1:18 The variable \"@undefined\" was not declared.\n";
expectCompileError(less, expectedError);
}
@Test
public void testTwoErrors() {
String less = ".class { margin: @variable; .mixin(); }";
String expectedError = "Could not compile less. 2 error(s) occurred:\nERROR 1:29 Could not find mixin named \".mixin\".\nERROR 1:18 The variable \"@variable\" was not declared.\n";
expectCompileError(less, expectedError);
}
@Test
public void testThreeErrors() {
String less = ".class { margin: @variable; .mixin(); size: @other;}";
String expectedError = "Could not compile less. 3 error(s) occurred:\nERROR 1:29 Could not find mixin named \".mixin\".\nERROR 1:18 The variable \"@variable\" was not declared.\n...\n";
expectCompileError(less, expectedError);
}
@Test
public void testAntlrError() {
String less = ".class { margin: 1 1 1 1; ";
String expectedError = "Could not compile less. 1 error(s) occurred:\nERROR 1:27 no viable alternative at input '<EOF>' in ruleset (which started at 1:1)\n";
expectCompileError(less, expectedError);
}
private void expectCompileError(String less, String expectedError) {
StringSource lessSource = new StringSource(less);
try {
LessCompiler compiler = new DefaultLessCompiler();
compiler.compile(lessSource);
} catch (Less4jException e) {
assertFalse(e.getErrors().isEmpty());
assertEquals(expectedError, e.getMessage());
return ;
}
fail("Should have thrown exception.");
}
}