Polishing.

Simplify test. See #1343

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/query/StringBasedJdbcQueryUnitTests.java

@@ -194,57 +194,85 @@ void pageQueryNotSupported() {
 @Test // GH-1212
 void convertsEnumCollectionParameterIntoStringCollectionParameter() {
 
-JdbcQueryMethod queryMethod = createMethod("findByEnumTypeIn", Set.class);
-BasicJdbcConverter converter = new BasicJdbcConverter(mock(RelationalMappingContext.class),
-mock(RelationResolver.class));
-StringBasedJdbcQuery query = new StringBasedJdbcQuery(queryMethod, operations, result -> mock(RowMapper.class),
-converter, evaluationContextProvider);
+SqlParameterSource sqlParameterSource = forMethod("findByEnumTypeIn", Set.class)
+.withArguments(Set.of(Direction.LEFT, Direction.RIGHT)).extractParameterSource();
 
-query.execute(new Object[] { Set.of(Direction.LEFT, Direction.RIGHT) });
-
-ArgumentCaptor<SqlParameterSource> captor = ArgumentCaptor.forClass(SqlParameterSource.class);
-verify(operations).query(anyString(), captor.capture(), any(ResultSetExtractor.class));
-
-SqlParameterSource sqlParameterSource = captor.getValue();
 assertThat(sqlParameterSource.getValue("directions")).asList().containsExactlyInAnyOrder("LEFT", "RIGHT");
 }
 
 @Test // GH-1212
 void convertsEnumCollectionParameterUsingCustomConverterWhenRegisteredForType() {
 
-JdbcQueryMethod queryMethod = createMethod("findByEnumTypeIn", Set.class);
-BasicJdbcConverter converter = new BasicJdbcConverter(mock(RelationalMappingContext.class),
-mock(RelationResolver.class),
-new JdbcCustomConversions(List.of(DirectionToIntegerConverter.INSTANCE, IntegerToDirectionConverter.INSTANCE)),
-JdbcTypeFactory.unsupported(), IdentifierProcessing.ANSI);
-StringBasedJdbcQuery query = new StringBasedJdbcQuery(queryMethod, operations, result -> mock(RowMapper.class),
-converter, evaluationContextProvider);
-
-query.execute(new Object[] { Set.of(Direction.LEFT, Direction.RIGHT) });
-
-ArgumentCaptor<SqlParameterSource> captor = ArgumentCaptor.forClass(SqlParameterSource.class);
-verify(operations).query(anyString(), captor.capture(), any(ResultSetExtractor.class));
+SqlParameterSource sqlParameterSource = forMethod("findByEnumTypeIn", Set.class) //
+.withCustomConverters(DirectionToIntegerConverter.INSTANCE, IntegerToDirectionConverter.INSTANCE)
+.withArguments(Set.of(Direction.LEFT, Direction.RIGHT)) //
+.extractParameterSource();
 
-SqlParameterSource sqlParameterSource = captor.getValue();
 assertThat(sqlParameterSource.getValue("directions")).asList().containsExactlyInAnyOrder(-1, 1);
 }
 
+
 @Test // GH-1212
 void doesNotConvertNonCollectionParameter() {
 
-JdbcQueryMethod queryMethod = createMethod("findBySimpleValue", Integer.class);
-BasicJdbcConverter converter = new BasicJdbcConverter(mock(RelationalMappingContext.class),
-mock(RelationResolver.class));
-StringBasedJdbcQuery query = new StringBasedJdbcQuery(queryMethod, operations, result -> mock(RowMapper.class),
-converter, evaluationContextProvider);
+SqlParameterSource sqlParameterSource = forMethod("findBySimpleValue", Integer.class) //
+.withArguments(1) //
+.extractParameterSource();
 
-query.execute(new Object[] { 1 });
+assertThat(sqlParameterSource.getValue("value")).isEqualTo(1);
+}
 
-ArgumentCaptor<SqlParameterSource> captor = ArgumentCaptor.forClass(SqlParameterSource.class);
-verify(operations).query(anyString(), captor.capture(), any(ResultSetExtractor.class));
+QueryFixture forMethod(String name, Class... paramTypes) {
+return new QueryFixture(createMethod(name, paramTypes));
+}
 
-SqlParameterSource sqlParameterSource = captor.getValue();
-assertThat(sqlParameterSource.getValue("value")).isEqualTo(1);
+private class QueryFixture {
+
+private final JdbcQueryMethod method;
+private Object[] arguments;
+private BasicJdbcConverter converter;
+
+public QueryFixture(JdbcQueryMethod method) {
+this.method = method;
+}
+
+public QueryFixture withArguments(Object... arguments) {
+
+this.arguments = arguments;
+
+return this;
+}
+
+public SqlParameterSource extractParameterSource() {
+
+BasicJdbcConverter converter = this.converter == null //
+? new BasicJdbcConverter(mock(RelationalMappingContext.class), //
+mock(RelationResolver.class))
+: this.converter;
+
+StringBasedJdbcQuery query = new StringBasedJdbcQuery(method, operations, result -> mock(RowMapper.class),
+converter, evaluationContextProvider);
+
+query.execute(arguments);
+
+ArgumentCaptor<SqlParameterSource> captor = ArgumentCaptor.forClass(SqlParameterSource.class);
+verify(operations).query(anyString(), captor.capture(), any(ResultSetExtractor.class));
+
+return captor.getValue();
+}
+
+public QueryFixture withConverter(BasicJdbcConverter converter) {
+
+this.converter = converter;
+
+return this;
+}
+
+public QueryFixture withCustomConverters(Object... converters) {
+
+return withConverter(new BasicJdbcConverter(mock(RelationalMappingContext.class), mock(RelationResolver.class),
+new JdbcCustomConversions(List.of(converters)), JdbcTypeFactory.unsupported(), IdentifierProcessing.ANSI));
+}
 }
 
 private JdbcQueryMethod createMethod(String methodName, Class<?>... paramTypes) {