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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.indexinglanguage;
import com.yahoo.language.process.Embedder;
import com.yahoo.language.simple.SimpleLinguistics;
import com.yahoo.vespa.indexinglanguage.expressions.EchoExpression;
import com.yahoo.vespa.indexinglanguage.expressions.InputExpression;
import com.yahoo.vespa.indexinglanguage.expressions.ScriptExpression;
import com.yahoo.vespa.indexinglanguage.expressions.StatementExpression;
import com.yahoo.vespa.indexinglanguage.parser.IndexingInput;
import com.yahoo.vespa.indexinglanguage.parser.ParseException;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
/**
* @author Simon Thoresen Hult
*/
public class ScriptParserTestCase {
@Test
public void requireThatExpressionParserCanBeInvoked() throws ParseException {
try {
ScriptParser.parseExpression(newContext("foo"));
} catch (ParseException e) {
assertException(e, "Encountered \" <IDENTIFIER> \"foo\"\" at line 1, column 1.");
}
assertEquals(new InputExpression("foo"),
ScriptParser.parseExpression(newContext("input foo")));
assertEquals(new StatementExpression(new InputExpression("foo"), new EchoExpression()),
ScriptParser.parseExpression(newContext("input foo | echo")));
assertEquals(new ScriptExpression(new StatementExpression(new InputExpression("foo")),
new StatementExpression(new EchoExpression())),
ScriptParser.parseExpression(newContext("{ input foo; echo }")));
}
@Test
public void requireThatStatementParserCanBeInvoked() throws ParseException {
try {
ScriptParser.parseStatement(newContext("foo"));
} catch (ParseException e) {
assertException(e, "Encountered \" <IDENTIFIER> \"foo\"\" at line 1, column 1.");
}
assertEquals(new StatementExpression(new InputExpression("foo")),
ScriptParser.parseStatement(newContext("input foo")));
assertEquals(new StatementExpression(new InputExpression("foo"), new EchoExpression()),
ScriptParser.parseStatement(newContext("input foo | echo")));
assertEquals(new StatementExpression(new ScriptExpression(new StatementExpression(new InputExpression("foo")),
new StatementExpression(new EchoExpression()))),
ScriptParser.parseStatement(newContext("{ input foo; echo }")));
}
@Test
public void requireThatScriptParserCanBeInvoked() throws ParseException {
try {
ScriptParser.parseScript(newContext("foo"));
} catch (ParseException e) {
assertException(e, "Encountered \" <IDENTIFIER> \"foo\"\" at line 1, column 1.");
}
try {
ScriptParser.parseScript(newContext("input foo"));
} catch (ParseException e) {
assertException(e, "Encountered \" \"input\" \"input\"\" at line 1, column 1.");
}
try {
ScriptParser.parseScript(newContext("input foo | echo"));
} catch (ParseException e) {
assertException(e, "Encountered \" \"input\" \"input\"\" at line 1, column 1.");
}
assertEquals(new ScriptExpression(new StatementExpression(new InputExpression("foo")),
new StatementExpression(new EchoExpression())),
ScriptParser.parseScript(newContext("{ input foo; echo }")));
}
@Test
public void requireThatStatementParserBacksUpStream() throws ParseException {
ScriptParserContext config = newContext("input foo input bar");
assertEquals(new StatementExpression(new InputExpression("foo")), ScriptParser.parseStatement(config));
assertEquals(new StatementExpression(new InputExpression("bar")), ScriptParser.parseStatement(config));
}
@Test
public void requireThatScriptParserBacksUpStream() throws ParseException {
ScriptParserContext config = newContext("{ input foo }{ input bar }");
assertEquals(new ScriptExpression(new StatementExpression(new InputExpression("foo"))),
ScriptParser.parseScript(config));
assertEquals(new ScriptExpression(new StatementExpression(new InputExpression("bar"))),
ScriptParser.parseScript(config));
}
private static void assertException(ParseException e, String expectedMessage) throws ParseException {
if (!e.getMessage().startsWith(expectedMessage)) {
fail("Expected exception with message starting with:\n'" + expectedMessage + ", but got:\n'" + e.getMessage());
}
}
private static ScriptParserContext newContext(String input) {
return new ScriptParserContext(new SimpleLinguistics(), Embedder.throwsOnUse).setInputStream(new IndexingInput(input));
}
}
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