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Diffstat (limited to 'src/junit')
| -rw-r--r-- | src/junit/com/jogamp/common/util/TestBitfield00.java | 379 |
1 files changed, 379 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/common/util/TestBitfield00.java b/src/junit/com/jogamp/common/util/TestBitfield00.java new file mode 100644 index 0000000..7f2835a --- /dev/null +++ b/src/junit/com/jogamp/common/util/TestBitfield00.java @@ -0,0 +1,379 @@ +/** + * Copyright 2015 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ + +package com.jogamp.common.util; + +import java.io.IOException; + +import org.junit.Test; +import org.junit.Assert; + +import com.jogamp.junit.util.SingletonJunitCase; + +import org.junit.FixMethodOrder; +import org.junit.runners.MethodSorters; + +/** + * Test basic bitfield operations for {@link Bitfield} + */ +@FixMethodOrder(MethodSorters.NAME_ASCENDING) +public class TestBitfield00 extends SingletonJunitCase { + + @Test + public void test01_BitCount32_One() { + final String[] pyramid32bit_one = BitDemoData.pyramid32bit_one; + for(int i=0; i<pyramid32bit_one.length; i++) { + final int val0 = 1 << i; + final int oneBitCountI = Integer.bitCount(val0); + final String pattern0 = pyramid32bit_one[i]; + final int val1 = BitDemoData.toInteger(pattern0); + final String pattern1 = BitDemoData.toBinaryString(val0, 32); + final int oneBitCount0 = BitDemoData.getOneBitCount(pattern0); + final int oneBitCount1 = Bitfield.Util.bitCount(val0); + final String msg = String.format("Round %02d: 0x%08x %s, c %d / %d%n : 0x%08x %s, c %d%n", + i, val0, pattern0, oneBitCount0, oneBitCountI, val1, pattern1, oneBitCount1); + + Assert.assertEquals(msg, val0, val1); + Assert.assertEquals(msg, pattern0, pattern1); + + Assert.assertEquals(msg, oneBitCount0, oneBitCountI); + Assert.assertEquals(msg, oneBitCount0, oneBitCount1); + } + } + + @SuppressWarnings("unused") + @Test + public void test02_BitCount32_Samples() { + final long MAX = BitDemoData.UNSIGNED_INT_MAX_VALUE; + final long MAX_minus = MAX-0x1FF; + final long MAX_half = MAX/2; + final long MAX_half_minus = MAX_half-0x1FF; + final long MAX_half_plus = MAX_half+0x1FF; + + if( false ) { + for(long l=0; l<=MAX; l++) { + test_BitCount32_Samples(l); + } + } + for(long l=0; l>=0x1FF; l++) { + test_BitCount32_Samples(l); + } + for(long l=MAX_half_minus; l<=MAX_half_plus; l++) { + test_BitCount32_Samples(l); + } + for(long l=MAX_minus; l<=MAX; l++) { + test_BitCount32_Samples(l); + } + } + static void test_BitCount32_Samples(final long l) { + final int oneBitCountL = Long.bitCount(l); + final int val0 = (int)l; + final int oneBitCountI = Integer.bitCount(val0); + final int oneBitCount1 = Bitfield.Util.bitCount(val0); + final String msg = String.format("Round 0x%08x, c %d / %d / %d%n", val0, + oneBitCountL, oneBitCountI, oneBitCount1); + Assert.assertEquals(msg, oneBitCountI, oneBitCountL); + Assert.assertEquals(msg, oneBitCountI, oneBitCount1); + } + + static int[] testDataOneBit = new int[] { + 0,0, 1,1, 2,1, 3,2, 4,1, 5,2, 6,2, 7,3, + 8,1, 9,2, 10,2, 11,3, 12,2, 13,3, 14,3, 15,4, 16,1, 17,2, + 0x3F,6, 0x40,1, 0x41,2, 0x7f,7, 0x80,1, 0x81,2, 0xfe,7, 0xff,8, + 0x4000,1, 0x4001,2, 0x7000,3, 0x7fff,15, + 0x0FFFFFF0,24, + 0x55555555,16, + 0x7F53F57B,23, 0xFEA7EAF6,23, /* << 1 */ + 0x80000000, 1, + 0xAAAAAAAA,16, + 0xC0C0C0C0, 8, + 0xFF000000, 8, + 0xFFFFFFFF,32 + }; + @Test + public void test03_BitCount32_Data() { + for(int i = 0; i<testDataOneBit.length; i+=2) { + test_BitCount32_Data(testDataOneBit[i], testDataOneBit[i+1]); + } + } + static void test_BitCount32_Data(final int i, final int expOneBits) { + final int oneBitCountI = Integer.bitCount(i); + final int oneBitCount1 = Bitfield.Util.bitCount(i); + final String msg = String.format("Round 0x%08x, c %d / %d%n", i, + oneBitCountI, oneBitCount1); + Assert.assertEquals(msg, oneBitCount1, expOneBits); + Assert.assertEquals(msg, oneBitCountI, oneBitCount1); + } + + @Test + public void test10_Setup() { + final int bitSize32 = 32; + final int bitSize128 = 128; + final Bitfield bf1 = Bitfield.Factory.create(bitSize32); + Assert.assertEquals(bitSize32, bf1.size()); + Assert.assertTrue(bf1 instanceof jogamp.common.util.Int32Bitfield); + final Bitfield bf2 = Bitfield.Factory.create(bitSize128); + Assert.assertEquals(bitSize128, bf2.size()); + Assert.assertTrue(bf2 instanceof jogamp.common.util.Int32ArrayBitfield); + + // verify no bit is set + Assert.assertEquals(0, bf1.bitCount()); + Assert.assertEquals(0, bf2.bitCount()); + + bf1.clearField(true); + bf2.clearField(true); + Assert.assertEquals(bf1.size(), bf1.bitCount()); + Assert.assertEquals(bf2.size(), bf2.bitCount()); + + bf1.clearField(false); + bf2.clearField(false); + Assert.assertEquals(0, bf1.bitCount()); + Assert.assertEquals(0, bf2.bitCount()); + } + static class TestDataBF { + final int bitSize; + final int val; + final String pattern; + public TestDataBF(final int bitSize, final int value, final String pattern) { + this.bitSize = bitSize; + this.val = value; + this.pattern = pattern; + } + } + static TestDataBF[] testDataBF32Bit = { + new TestDataBF(32, BitDemoData.testIntMSB, BitDemoData.testStringMSB), + new TestDataBF(32, BitDemoData.testIntMSB_rev, BitDemoData.testStringMSB_rev), + new TestDataBF(32, BitDemoData.testIntLSB, BitDemoData.testStringLSB), + new TestDataBF(32, BitDemoData.testIntLSB_revByte, BitDemoData.testStringLSB_revByte), + + // H->L : 0x04030201: 00000100 00000011 00000010 00000001 + new TestDataBF(32, 0x04030201, "00000100000000110000001000000001"), + + // H->L : 0xAFFECAFE: 10101111 11111110 11001010 11111110 + new TestDataBF(32, 0xAFFECAFE, "10101111111111101100101011111110"), + // H->L : 0xDEADBEEF: 11011110 10101101 10111110 11101111 + new TestDataBF(32, 0xDEADBEEF, "11011110101011011011111011101111") + }; + static TestDataBF[] testDataBF16Bit = { + // H->L : 0x0201: 00000100 00000011 00000010 00000001 + new TestDataBF(16, 0x0201, "0000001000000001"), + // H->L : 0x0403: 00000100 00000011 + new TestDataBF(16, 0x0403, "0000010000000011"), + + // H->L : 0xAFFE: 10101111 11111110 + new TestDataBF(16, 0xAFFE, "1010111111111110"), + // H->L : 0xCAFE: 11001010 11111110 + new TestDataBF(16, 0xCAFE, "1100101011111110"), + + // H->L : 0xDEADBEEF: 11011110 10101101 10111110 11101111 + new TestDataBF(16, 0xDEAD, "1101111010101101"), + new TestDataBF(16, 0xBEEF, "1011111011101111") + }; + + @Test + public void test20_ValidateTestData() { + for(int i=0; i<testDataBF32Bit.length; i++) { + test_ValidateTestData( testDataBF32Bit[i] ); + } + for(int i=0; i<testDataBF16Bit.length; i++) { + test_ValidateTestData( testDataBF16Bit[i] ); + } + } + static void test_ValidateTestData(final TestDataBF d) { + final int oneBitCount0 = Bitfield.Util.bitCount(d.val); + final int oneBitCount1 = BitDemoData.getOneBitCount(d.pattern); + Assert.assertEquals(oneBitCount1, oneBitCount0); + final String pattern0 = BitDemoData.toBinaryString(d.val, d.bitSize); + Assert.assertEquals(d.pattern, pattern0); + final int val1 = BitDemoData.toInteger(d.pattern); + Assert.assertEquals(d.val, val1); + Assert.assertEquals(d.bitSize, pattern0.length()); + } + + static void assertEquals(final Bitfield bf, final int bf_off, final int v, final String pattern, final int oneBitCount) { + final int len = pattern.length(); + for(int i=0; i<len; i++) { + final boolean exp0 = 0 != ( v & ( 1 << i ) ); + final boolean exp1 = '1' == pattern.charAt(len-1-i); + final boolean has = bf.get(i+bf_off); + final String msg = String.format("Pos %04d: Value 0x%08x / %s, c %d%n", i, v, pattern, oneBitCount); + Assert.assertEquals(msg, exp0, has); + Assert.assertEquals(msg, exp1, has); + } + } + + @Test + public void test21_Aligned32bit() { + for(int i=0; i<testDataBF32Bit.length; i++) { + test_Aligned32bit( testDataBF32Bit[i] ); + } + for(int i=0; i<testDataBF16Bit.length; i++) { + test_Aligned32bit( testDataBF16Bit[i] ); + } + } + static int get32BitStorageSize(final int bits) { + final int units = Math.max(1, ( bits + 31 ) >>> 5); + return units << 5; + } + static void test_Aligned32bit(final TestDataBF d) { + final int oneBitCount = Bitfield.Util.bitCount(d.val); + + final Bitfield bf1 = Bitfield.Factory.create(d.bitSize); + Assert.assertEquals(get32BitStorageSize(d.bitSize), bf1.size()); + final Bitfield bf2 = Bitfield.Factory.create(d.bitSize+128); + Assert.assertEquals(get32BitStorageSize(d.bitSize+128), bf2.size()); + + bf1.put32( 0, d.bitSize, d.val); + Assert.assertEquals(d.val, bf1.get32( 0, d.bitSize)); + Assert.assertEquals(oneBitCount, bf1.bitCount()); + assertEquals(bf1, 0, d.val, d.pattern, oneBitCount); + + bf2.put32( 0, d.bitSize, d.val); + Assert.assertEquals(d.val, bf2.get32( 0, d.bitSize)); + Assert.assertEquals(oneBitCount*1, bf2.bitCount()); + assertEquals(bf2, 0, d.val, d.pattern, oneBitCount); + bf2.put32(64, d.bitSize, d.val); + Assert.assertEquals(d.val, bf2.get32(64, d.bitSize)); + Assert.assertEquals(oneBitCount*2, bf2.bitCount()); + assertEquals(bf2, 64, d.val, d.pattern, oneBitCount); + + Assert.assertEquals(d.val, bf2.copy32(0, 96, d.bitSize)); + Assert.assertEquals(d.val, bf2.get32(96, d.bitSize)); + Assert.assertEquals(oneBitCount*3, bf2.bitCount()); + assertEquals(bf2, 96, d.val, d.pattern, oneBitCount); + } + + @Test + public void test21_Unaligned() { + for(int i=0; i<testDataBF32Bit.length; i++) { + test_Unaligned(testDataBF32Bit[i]); + } + for(int i=0; i<testDataBF16Bit.length; i++) { + test_Unaligned(testDataBF16Bit[i]); + } + } + static void test_Unaligned(final TestDataBF d) { + final Bitfield bf1 = Bitfield.Factory.create(d.bitSize); + final Bitfield bf2 = Bitfield.Factory.create(d.bitSize+128); + Assert.assertEquals(get32BitStorageSize(d.bitSize), bf1.size()); + Assert.assertEquals(get32BitStorageSize(d.bitSize+128), bf2.size()); + test_Unaligned( d, bf1 ); + test_Unaligned( d, bf2 ); + } + static void test_Unaligned(final TestDataBF d, final Bitfield bf) { + for(int i=0; i<bf.size()-d.bitSize; i++) { + bf.clearField(false); + test_Unaligned(d, bf, i); + } + } + static void test_Unaligned(final TestDataBF d, final Bitfield bf, final int lowBitnum) { + final int oneBitCount = Bitfield.Util.bitCount(d.val); + + final String msg = String.format("Value 0x%08x / %s, c %d, lbPos %d%n", d.val, d.pattern, oneBitCount, lowBitnum); + + // + // via put32 + // + bf.put32( lowBitnum, d.bitSize, d.val); + for(int i=0; i<d.bitSize; i++) { + Assert.assertEquals(msg+", bitpos "+i, 0 != ( d.val & ( 1 << i ) ), bf.get(lowBitnum+i)); + } + Assert.assertEquals(msg, d.val, bf.get32( lowBitnum, d.bitSize)); + Assert.assertEquals(msg, oneBitCount, bf.bitCount()); + assertEquals(bf, lowBitnum, d.val, d.pattern, oneBitCount); + + // + // via copy32 + // + if( bf.size()-d.bitSize > lowBitnum+1 ) { + // copy bits 1 forward + // clear trailing orig bit + Assert.assertEquals(msg, d.val, bf.copy32(lowBitnum, lowBitnum+1, d.bitSize)); + bf.clear(lowBitnum); + Assert.assertEquals(msg, d.val, bf.get32( lowBitnum+1, d.bitSize)); + Assert.assertEquals(msg, oneBitCount, bf.bitCount()); + assertEquals(bf, lowBitnum+1, d.val, d.pattern, oneBitCount); + } + + // + // via put + // + bf.clearField(false); + for(int i=0; i<d.bitSize; i++) { + bf.put(lowBitnum+i, 0 != ( d.val & ( 1 << i ) )); + } + Assert.assertEquals(msg, d.val, bf.get32(lowBitnum, d.bitSize)); + for(int i=0; i<d.bitSize; i++) { + Assert.assertEquals(msg+", bitpos "+i, 0 != ( d.val & ( 1 << i ) ), bf.get(lowBitnum+i)); + } + Assert.assertEquals(msg, oneBitCount, bf.bitCount()); + assertEquals(bf, lowBitnum, d.val, d.pattern, oneBitCount); + + // + // via copy + // + if( bf.size()-d.bitSize > lowBitnum+1 ) { + // copy bits 1 forward + // clear trailing orig bit + for(int i=d.bitSize-1; i>=0; i--) { + bf.copy(lowBitnum+i, lowBitnum+1+i); + } + bf.clear(lowBitnum); + Assert.assertEquals(msg, d.val, bf.get32( lowBitnum+1, d.bitSize)); + for(int i=0; i<d.bitSize; i++) { + Assert.assertEquals(msg+", bitpos "+i, 0 != ( d.val & ( 1 << i ) ), bf.get(lowBitnum+1+i)); + } + Assert.assertEquals(msg, oneBitCount, bf.bitCount()); + assertEquals(bf, lowBitnum+1, d.val, d.pattern, oneBitCount); + } + + // + // via set/clear + // + bf.clearField(false); + for(int i=0; i<d.bitSize; i++) { + if( 0 != ( d.val & ( 1 << i ) ) ) { + bf.set(lowBitnum+i); + } else { + bf.clear(lowBitnum+i); + } + } + Assert.assertEquals(msg, d.val, bf.get32(lowBitnum, d.bitSize)); + for(int i=0; i<d.bitSize; i++) { + Assert.assertEquals(msg+", bitpos "+i, 0 != ( d.val & ( 1 << i ) ), bf.get(lowBitnum+i)); + } + Assert.assertEquals(msg, oneBitCount, bf.bitCount()); + assertEquals(bf, lowBitnum, d.val, d.pattern, oneBitCount); + } + + public static void main(final String args[]) throws IOException { + final String tstname = TestBitfield00.class.getName(); + org.junit.runner.JUnitCore.main(tstname); + } + +} |