Added unit tests for WhereSegmentBinder to test its public functions …

…to improve unit test coverage.

infra/binder/src/test/java/org/apache/shardingsphere/infra/binder/segment/where/WhereSegmentBinderTest.java

@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.infra.binder.segment.where;
+
+import org.apache.shardingsphere.infra.binder.segment.from.TableSegmentBinderContext;
+import org.apache.shardingsphere.infra.binder.statement.SQLStatementBinderContext;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.ExpressionSegment;
+import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.predicate.WhereSegment;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+
+class WhereSegmentBinderTest {
+
+    @Mock
+    private WhereSegmentBinder whereSegmentBinder;
+
+    @Test
+    void assertBind() {
+        SQLStatementBinderContext sqlStatementBinderContext = mock(SQLStatementBinderContext.class);
+        WhereSegment expectedWhereSegment = new WhereSegment(1, 2, mock(ExpressionSegment.class));
+        Map<String, TableSegmentBinderContext> tableBinderContexts = new HashMap<>();
+        Map<String, TableSegmentBinderContext> outerTableBinderContexts = new HashMap<>();
+        whereSegmentBinder = mock(WhereSegmentBinder.class);
+        doReturn(expectedWhereSegment).when(whereSegmentBinder);
+        WhereSegment actualWhereSegment = WhereSegmentBinder.bind(expectedWhereSegment, sqlStatementBinderContext, tableBinderContexts, outerTableBinderContexts);
+        Assertions.assertEquals(expectedWhereSegment.getStopIndex(), actualWhereSegment.getStopIndex());
+        Assertions.assertEquals(expectedWhereSegment.getStartIndex(), actualWhereSegment.getStartIndex());
+        Assertions.assertEquals(expectedWhereSegment.getExpr(), actualWhereSegment.getExpr());
+    }
+}