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UseWireMockToInterceptJdbcResultSetsTest.java
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UseWireMockToInterceptJdbcResultSetsTest.java
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package example;
import com.github.tomakehurst.wiremock.client.WireMock;
import com.github.tomakehurst.wiremock.junit.WireMockRule;
import lombok.SneakyThrows;
import lombok.Value;
import org.eeichinger.servicevirtualisation.jdbc.JdbcServiceVirtualizationFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.core.io.ByteArrayResource;
import org.springframework.jdbc.BadSqlGrammarException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactoryBean;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
import javax.sql.DataSource;
import java.sql.PreparedStatement;
import java.util.ArrayList;
import java.util.List;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
/**
* Demonstrates you to use the technique to just spy on a real database and intercept/mock only selected jdbc queries.
*
* Under the hood it uses P6Spy to spy on the jdbc connection and hooks into {@link PreparedStatement#executeQuery()} to
* redirect the call to WireMock.
*
* If WireMock returns 404 (i.e. no match was found), the query is passed through to the real datasource.
*/
public class UseWireMockToInterceptJdbcResultSetsTest {
@Rule
public WireMockRule wireMockRule = new WireMockRule(0);
@Rule
public ExpectedException thrown = ExpectedException.none();
EmbeddedDatabaseFactoryBean databaseFactory;
JdbcTemplate jdbcTemplate;
@SneakyThrows
public EmbeddedDatabaseFactoryBean createHSQLDatabaseFactory() {
final ResourceDatabasePopulator dbPopulator = new ResourceDatabasePopulator();
dbPopulator.addScript(new ByteArrayResource(("" +
"CREATE TABLE PEOPLE (" +
" name VARCHAR(200) NOT NULL" +
", birthday VARCHAR(200) NOT NULL" +
", placeofbirth VARCHAR(200) NOT NULL" +
");\n"
).getBytes("utf-8")));
dbPopulator.addScript(new ByteArrayResource(("" +
"INSERT INTO PEOPLE(name, birthday, placeofbirth) VALUES('Hugo Simon', '2012-01-02', 'Munich');\n"
).getBytes("utf-8")));
EmbeddedDatabaseFactoryBean dbFactory = new EmbeddedDatabaseFactoryBean();
dbFactory.setDatabaseType(EmbeddedDatabaseType.HSQL);
dbFactory.setDatabasePopulator(dbPopulator);
return dbFactory;
}
@Before
public void before() {
// wiremock is listening on port WireMockRule#port(), point our Jdbc-Spy to it
JdbcServiceVirtualizationFactory myP6MockFactory = new JdbcServiceVirtualizationFactory();
myP6MockFactory.setTargetUrl("http://localhost:" + wireMockRule.port() + "/sqlstub");
// wrap the real datasource so we can spy/intercept it
databaseFactory = createHSQLDatabaseFactory();
DataSource dataSource = myP6MockFactory.spyOnDataSource(databaseFactory.getDatabase());
jdbcTemplate = new JdbcTemplate(dataSource);
}
@After
public void after() {
databaseFactory.destroy();
}
@Test
public void intercepts_matching_update_and_responds_with_int() {
final String NAME_ERICH_EICHINGER = "Erich Eichinger";
// setup mock resultsets
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("UPDATE PEOPLE set birthday=? WHERE name = ?"))
// return the number of rows affected
.willReturn(WireMock
.aResponse()
.withStatus(200)
.withBody("2")
)
)
;
int res = jdbcTemplate.update(
"UPDATE PEOPLE set birthday=? WHERE name = ?", "1970-01-01", NAME_ERICH_EICHINGER
);
assertThat(res, equalTo(2));
}
@Test
public void intercepts_matching_query_and_responds_with_mockresultset() {
final String NAME_ERICH_EICHINGER = "Erich Eichinger";
// setup mock resultsets
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("SELECT birthday FROM PEOPLE WHERE name = ?"))
// Parameters are sent with index has headername and value as headervalue
.withHeader("1", WireMock.equalTo(NAME_ERICH_EICHINGER))
// return a recordset
.willReturn(WireMock
.aResponse()
.withBody(""
+ "<resultset>"
+ " <cols><col>birthday</col></cols>"
+ " <row><val>1980-01-01</val></row>"
+ "</resultset>"
)
)
)
;
String dateTime = jdbcTemplate
.queryForObject(
"SELECT birthday FROM PEOPLE WHERE name = ?"
, String.class
, NAME_ERICH_EICHINGER
);
assertThat(dateTime, equalTo("1980-01-01"));
}
@Test
public void intercepts_matching_query_and_responds_with_multi_column_mockresultset() {
final String NAME_ERICH_EICHINGER = "Erich Eichinger";
final String PLACE_OF_BIRTH = "Vienna";
// setup mock resultsets
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("SELECT birthday, placeofbirth FROM PEOPLE WHERE name = ?"))
// Parameters are sent with index has headername and value as headervalue
.withHeader("1", WireMock.equalTo(NAME_ERICH_EICHINGER))
// return a recordset
.willReturn(WireMock
.aResponse()
.withBody(""
+ "<resultset>"
+ " <cols><col>birthday</col><col>placeofbirth</col></cols>"
+ " <row>"
+ " <birthday>1980-01-01</birthday>"
+ " <placeofbirth>" + PLACE_OF_BIRTH + "</placeofbirth>"
+ " </row>"
+ "</resultset>"
)
)
)
;
String birthday = jdbcTemplate.queryForObject(
"SELECT birthday, placeofbirth FROM PEOPLE WHERE name = ?"
, new Object[] { NAME_ERICH_EICHINGER }
, (rs, rowNum) -> {
return rs.getString(1);
}
);
String placeOfBirth = jdbcTemplate.queryForObject(
"SELECT birthday, placeofbirth FROM PEOPLE WHERE name = ?"
, new Object[] { NAME_ERICH_EICHINGER }
, (rs, rowNum) -> {
return rs.getString(2);
}
);
assertThat(birthday, equalTo("1980-01-01"));
assertThat(placeOfBirth, equalTo(PLACE_OF_BIRTH));
}
@Test
public void intercepts_matching_batch_update_and_responds_with_two_dimensional_int_array() {
// setup mock for batch 1 - always the last parameters of each batch will be sent
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("INSERT INTO PEOPLE (name, birthday, placeofbirth) " +
"VALUES (?, ?, ?)"))
// Parameters are sent with index has headername and value as headervalue
.withHeader("1", WireMock.matching("Matthias Bernloehr")) // last arg of batch 1
.withHeader("2", WireMock.matching(".+"))
.withHeader("3", WireMock.matching(".+"))
// return a recordset
.willReturn(WireMock
.aResponse()
.withBody(""
+ "0,1"
)
)
);
// setup mock for batch 2 - always the last parameters of each batch will be sent
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("INSERT INTO PEOPLE (name, birthday, placeofbirth) " +
"VALUES (?, ?, ?)"))
// Parameters are sent with index has headername and value as headervalue
.withHeader("1", WireMock.matching("Volker Waltner")) // last arg of batch 2
.withHeader("2", WireMock.matching(".+"))
.withHeader("3", WireMock.matching(".+"))
// return a recordset
.willReturn(WireMock
.aResponse()
.withBody(""
+ "-1,-2"
)
)
);
List<Person> persons = new ArrayList<Person>() {{
add(new Person("Erich Erichinger", "1980-01-01", "Vienna"));
add(new Person("Matthias Bernloehr", "1990-01-01", "Germany"));
add(new Person("Steffen Wegner", "1990-01-01", "Germany"));
add(new Person("Volker Waltner", "1980-01-01", "Germany"));
}};
int[][] result = jdbcTemplate.batchUpdate("INSERT INTO PEOPLE (name, birthday, placeofbirth) " +
"VALUES (?, ?, ?)", persons, 2, (ps, argument) -> {
ps.setString(1, argument.getName());
ps.setString(2, argument.getBirthdate());
ps.setString(3, argument.getPlaceOfBirth());
});
assertThat(result.length, equalTo(2));
assertThat(result[0][0], equalTo(0));
assertThat(result[0][1], equalTo(1));
assertThat(result[1][0], equalTo(-1));
assertThat(result[1][1], equalTo(-2));
}
@Test
public void intercepts_matching_batch_update_and_responds_with_int_array() {
// setup mock resultsets - always the last parameters of each batch will be sent
WireMock.stubFor(WireMock
.post(WireMock.urlPathEqualTo("/sqlstub"))
// SQL Statement is posted in the body, use any available matchers to match
.withRequestBody(WireMock.equalTo("INSERT INTO PEOPLE (name, birthday, placeofbirth) " +
"VALUES (?, ?, ?)"))
// Parameters are sent with index has headername and value as headervalue
.withHeader("1", WireMock.matching("Volker Waltner")) // last arg of batch
.withHeader("2", WireMock.matching(".+"))
.withHeader("3", WireMock.matching(".+"))
// return a recordset
.willReturn(WireMock
.aResponse()
.withBody(""
+ "0,1,-1,-2"
)
)
);
List<Object[]> batchArgs = new ArrayList<Object[]>() {{
add(new Object[]{"Erich Erichinger", "1980-01-01", "Vienna"});
add(new Object[]{"Matthias Bernloehr", "1990-01-01", "Germany"});
add(new Object[]{"Steffen Wegner", "1990-01-01", "Germany"});
add(new Object[]{"Volker Waltner", "1980-01-01", "Germany"});
}};
int[] result = jdbcTemplate.batchUpdate("INSERT INTO PEOPLE (name, birthday, placeofbirth) " +
"VALUES (?, ?, ?)", batchArgs);
assertThat(result.length, equalTo(4));
assertThat(result[0], equalTo(0));
assertThat(result[1], equalTo(1));
assertThat(result[2], equalTo(-1));
assertThat(result[3], equalTo(-2));
}
@Test
public void passthrough_nonmatching_queries() {
final String NAME = "Hugo Simon";
String dateTime = jdbcTemplate
.queryForObject(
"SELECT birthday FROM PEOPLE WHERE name = ?"
, String.class
, NAME
);
assertThat(dateTime, equalTo("2012-01-02"));
}
@Test
public void passthrough_nonmatching_queries_with_error() {
thrown.expect(BadSqlGrammarException.class);
final String NAME = "Hugo Simon";
jdbcTemplate
.queryForObject(
"SYNTAX ERROR STATEMENT"
, String.class
, NAME
);
}
@Value
private static class Person {
String name;
String birthdate;
String placeOfBirth;
}
}