fe/fe-core/src/test/java/org/apache/doris/analysis/ReorderColumnsClauseTest.java

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package org.apache.doris.analysis;

import org.apache.doris.common.AnalysisException;

import com.google.common.collect.Lists;

import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

import java.util.List;

public class ReorderColumnsClauseTest {
    private static Analyzer analyzer;

    @BeforeClass
    public static void setUp() {
        analyzer = AccessTestUtil.fetchAdminAnalyzer(false);
    }

    @Test
    public void testNormal() throws AnalysisException {
        List<String> cols = Lists.newArrayList("col1", "col2");
        ReorderColumnsClause clause = new ReorderColumnsClause(cols, "", null);
        clause.analyze(analyzer);
        Assert.assertEquals("ORDER BY `col1`, `col2`", clause.toString());
        Assert.assertEquals(cols, clause.getColumnsByPos());
        Assert.assertNull(clause.getProperties());
        Assert.assertNull(clause.getRollupName());

        clause = new ReorderColumnsClause(cols, "rollup", null);
        clause.analyze(analyzer);
        Assert.assertEquals("ORDER BY `col1`, `col2` IN `rollup`", clause.toString());
    }

    @Test(expected = AnalysisException.class)
    public void testNoCol() throws AnalysisException {
        ReorderColumnsClause clause = new ReorderColumnsClause(null, "", null);
        clause.analyze(analyzer);
        Assert.fail("No exception throws.");
    }

    @Test(expected = AnalysisException.class)
    public void testColEmpty() throws AnalysisException {
        List<String> cols = Lists.newArrayList("col1", "");
        ReorderColumnsClause clause = new ReorderColumnsClause(cols, "", null);
        clause.analyze(analyzer);
        Assert.fail("No exception throws.");
    }
}