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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.svl.vars;

import static org.junit.Assert.*;

import org.apache.juneau.svl.*;
import org.junit.*;

public class PatternExtractVarTest {

	//====================================================================================================
	// test - Basic tests
	//====================================================================================================
	@Test
	public void test() throws Exception {
		VarResolver vr = new VarResolverBuilder().vars(PatternExtractVar.class, SystemPropertiesVar.class).build();

		System.setProperty("PatternExtractVarTest.test", "foo bar");
		System.setProperty("PatternExtractVarTest.test2", "size=23");

		assertEquals("foo bar", vr.resolve("$PE{$S{PatternExtractVarTest.test},(.*),1}"));
		
		assertEquals("size", vr.resolve("$PE{$S{PatternExtractVarTest.test2},(.*)=([0-9]+),1}"));
		assertEquals("23", vr.resolve("$PE{$S{PatternExtractVarTest.test2},(.*)=([0-9]+),2}"));
		assertEquals("size=23", vr.resolve("$PE{$S{PatternExtractVarTest.test2},(.*)=([0-9]+),0}"));
		assertEquals("", vr.resolve("$PE{$S{PatternExtractVarTest.test2},(.*)=([0-9]+),-2}"));
		assertEquals("", vr.resolve("$PE{$S{PatternExtractVarTest.test2},(.*)=([0-9]+),54}"));
		

	}
}