Refactored test case
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@711505 13f79535-47bb-0310-9956-ffa450edef68
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Josh Micich
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@ -1,4 +1,3 @@
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/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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@ -15,7 +14,6 @@
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record;
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@ -25,123 +23,94 @@ import org.apache.poi.util.IntMapper;
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/**
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* Tests that records size calculates correctly.
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*
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*
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* @author Glen Stampoultzis (glens at apache.org)
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*/
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public class TestSSTRecordSizeCalculator
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extends TestCase
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{
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private static final String SMALL_STRING = "Small string";
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private static final int COMPRESSED_PLAIN_STRING_OVERHEAD = 3;
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// private List recordLengths;
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private IntMapper strings;
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private static final int OPTION_FIELD_SIZE = 1;
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public final class TestSSTRecordSizeCalculator extends TestCase {
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private static final String SMALL_STRING = "Small string";
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private static final int COMPRESSED_PLAIN_STRING_OVERHEAD = 3;
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private static final int OPTION_FIELD_SIZE = 1;
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private final IntMapper strings = new IntMapper();
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public TestSSTRecordSizeCalculator( String s )
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{
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super( s );
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}
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private void confirmSize(int expectedSize) {
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(expectedSize, calculator.getRecordSize());
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}
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public void testBasic()
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throws Exception
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{
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strings.add(makeUnicodeString(SMALL_STRING));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD + COMPRESSED_PLAIN_STRING_OVERHEAD + SMALL_STRING.length(),
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calculator.getRecordSize());
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}
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public void testBasic() {
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strings.add(makeUnicodeString(SMALL_STRING));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SMALL_STRING.length());
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}
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public void testBigStringAcrossUnicode()
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throws Exception
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{
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String bigString = new String(new char[SSTRecord.MAX_DATA_SPACE + 100]);
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strings.add(makeUnicodeString(bigString));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ OPTION_FIELD_SIZE
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+ 100,
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calculator.getRecordSize());
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}
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public void testBigStringAcrossUnicode() {
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int bigString = SSTRecord.MAX_DATA_SPACE + 100;
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strings.add(makeUnicodeString(bigString));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ OPTION_FIELD_SIZE
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+ 100);
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}
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public void testPerfectFit()
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throws Exception
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{
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String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]);
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strings.add(makeUnicodeString(perfectFit));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ perfectFit.length(),
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calculator.getRecordSize());
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}
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public void testPerfectFit() {
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int perfectFit = SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD;
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strings.add(makeUnicodeString(perfectFit));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ perfectFit);
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}
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public void testJustOversized()
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throws Exception
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{
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String tooBig = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD + 1]);
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strings.add(makeUnicodeString(tooBig));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ tooBig.length() - 1
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// continue record
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ OPTION_FIELD_SIZE
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+ 1,
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calculator.getRecordSize());
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public void testJustOversized() {
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int tooBig = SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD + 1;
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strings.add(makeUnicodeString(tooBig));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ tooBig - 1
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// continue record
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ OPTION_FIELD_SIZE + 1);
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}
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}
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public void testSecondStringStartsOnNewContinuation()
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throws Exception
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{
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String perfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD]);
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strings.add(makeUnicodeString(perfectFit));
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strings.add(makeUnicodeString(SMALL_STRING));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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// second string
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SMALL_STRING.length(),
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calculator.getRecordSize());
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}
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public void testSecondStringStartsOnNewContinuation() {
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int perfectFit = SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD;
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strings.add(makeUnicodeString(perfectFit));
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strings.add(makeUnicodeString(SMALL_STRING));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ SSTRecord.MAX_DATA_SPACE
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// second string
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ SMALL_STRING.length());
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}
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public void testHeaderCrossesNormalContinuePoint()
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throws Exception
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{
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String almostPerfectFit = new String(new char[SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD - 2]);
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strings.add(makeUnicodeString(almostPerfectFit));
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String oneCharString = new String(new char[1]);
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strings.add(makeUnicodeString(oneCharString));
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SSTRecordSizeCalculator calculator = new SSTRecordSizeCalculator(strings);
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assertEquals(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ almostPerfectFit.length()
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// second string
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ oneCharString.length(),
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calculator.getRecordSize());
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public void testHeaderCrossesNormalContinuePoint() {
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int almostPerfectFit = SSTRecord.MAX_DATA_SPACE - COMPRESSED_PLAIN_STRING_OVERHEAD - 2;
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strings.add(makeUnicodeString(almostPerfectFit));
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String oneCharString = new String(new char[1]);
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strings.add(makeUnicodeString(oneCharString));
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confirmSize(SSTRecord.SST_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ almostPerfectFit
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// second string
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+ SSTRecord.STD_RECORD_OVERHEAD
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+ COMPRESSED_PLAIN_STRING_OVERHEAD
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+ oneCharString.length());
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}
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public void setUp()
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{
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strings = new IntMapper();
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}
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private UnicodeString makeUnicodeString( String s )
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{
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UnicodeString st = new UnicodeString(s);
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st.setOptionFlags((byte)0);
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return st;
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}
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}
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private static UnicodeString makeUnicodeString(int size) {
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String s = new String(new char[size]);
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return makeUnicodeString(s);
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}
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private static UnicodeString makeUnicodeString(String s) {
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UnicodeString st = new UnicodeString(s);
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st.setOptionFlags((byte) 0);
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return st;
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}
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}
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