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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.test.validation;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jacoco.core.test.validation.StatementParser.IStatementVisitor;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for {@link StatementParser}
*/
public class StatementParserTest {
private IStatementVisitor visitor;
private List<String> actualInvocations;
private List<String> expectedInvocations;
@Before
public void setup() {
actualInvocations = new ArrayList<String>();
expectedInvocations = new ArrayList<String>();
visitor = new IStatementVisitor() {
public void visitInvocation(String ctx, String name,
Object... args) {
actualInvocations.add(invocationStr(ctx, name, args));
}
};
}
@After
public void teardown() {
assertEquals(expectedInvocations, actualInvocations);
}
@Test
public void should_parse_empty_string() throws IOException {
StatementParser.parse("", visitor, "Foo.java");
}
@Test
public void should_parse_invocation_without_params() throws IOException {
StatementParser.parse("run()", visitor, "Foo.java");
expectInvocation("Foo.java", "run");
}
@Test
public void should_parse_invocation_with_one_int_parameter()
throws IOException {
StatementParser.parse("ask(42)", visitor, "Foo.java");
expectInvocation("Foo.java", "ask", Integer.valueOf(42));
}
@Test
public void should_parse_invocation_with_one_string_parameter()
throws IOException {
StatementParser.parse("say(\"hello\")", visitor, "Foo.java");
expectInvocation("Foo.java", "say", "hello");
}
@Test
public void should_parse_invocation_with_two_parameters()
throws IOException {
StatementParser.parse("add(1000, 234)", visitor, "Foo.java");
expectInvocation("Foo.java", "add", Integer.valueOf(1000),
Integer.valueOf(234));
}
@Test
public void should_parse_invocation_with_mixed_parameter_types()
throws IOException {
StatementParser.parse("mix(1, \"two\", 3)", visitor, "Foo.java");
expectInvocation("Foo.java", "mix", Integer.valueOf(1), "two",
Integer.valueOf(3));
}
@Test
public void should_parse_multiple_invocations() throws IOException {
StatementParser.parse("start() stop()", visitor, "Foo.java");
expectInvocation("Foo.java", "start");
expectInvocation("Foo.java", "stop");
}
@Test
public void should_fail_when_parenthesis_is_missing() throws IOException {
try {
StatementParser.parse("bad(", visitor, "Foo.java");
fail("exception expected");
} catch (IOException e) {
// expected
}
}
@Test
public void should_fail_when_argument1_is_missing() throws IOException {
try {
StatementParser.parse("bad(,2)", visitor, "Foo.java");
fail("exception expected");
} catch (IOException e) {
// expected
}
}
@Test
public void should_fail_when_argument2_is_missing() throws IOException {
try {
StatementParser.parse("bad(1,)", visitor, "Foo.java");
fail("exception expected");
} catch (IOException e) {
// expected
}
}
@Test
public void should_give_context_info_when_parsing_fails()
throws IOException {
try {
StatementParser.parse("bad", visitor, "Foo.java:32");
fail("exception expected");
} catch (IOException e) {
assertEquals("Invalid syntax (Foo.java:32)", e.getMessage());
}
}
private void expectInvocation(String ctx, String name, Object... args) {
expectedInvocations.add(invocationStr(ctx, name, args));
}
private String invocationStr(String ctx, String name, Object... args) {
return String.format("%s:%s%s", ctx, name, Arrays.asList(args));
}
}
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