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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "PathOpsExtendedTest.h"
      9 #include "PathOpsThreadedCommon.h"
     10 #include "SkBitmap.h"
     11 #include "SkCanvas.h"
     12 #include "SkForceLinking.h"
     13 #include "SkMatrix.h"
     14 #include "SkPaint.h"
     15 #include "SkRTConf.h"
     16 #include "SkStream.h"
     17 #include "SkTaskGroup.h"
     18 #include "SkThread.h"
     19 
     20 #ifdef SK_BUILD_FOR_MAC
     21 #include <sys/sysctl.h>
     22 #endif
     23 
     24 __SK_FORCE_IMAGE_DECODER_LINKING;
     25 
     26 DEFINE_bool2(runFail, f, false, "run tests known to fail.");
     27 
     28 static const char marker[] =
     29     "</div>\n"
     30     "\n"
     31     "<script type=\"text/javascript\">\n"
     32     "\n"
     33     "var testDivs = [\n";
     34 
     35 static const char* opStrs[] = {
     36     "kDifference_PathOp",
     37     "kIntersect_PathOp",
     38     "kUnion_PathOp",
     39     "kXor_PathOp",
     40     "kReverseDifference_PathOp",
     41 };
     42 
     43 static const char* opSuffixes[] = {
     44     "d",
     45     "i",
     46     "u",
     47     "o",
     48 };
     49 
     50 static bool gShowPath = false;
     51 static bool gComparePathsAssert = true;
     52 static bool gPathStrAssert = true;
     53 
     54 #if DEBUG_SHOW_TEST_NAME
     55 static void showPathData(const SkPath& path) {
     56     SkPath::RawIter iter(path);
     57     uint8_t verb;
     58     SkPoint pts[4];
     59     SkPoint firstPt = {0, 0}, lastPt = {0, 0};
     60     bool firstPtSet = false;
     61     bool lastPtSet = true;
     62     while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
     63         switch (verb) {
     64             case SkPath::kMove_Verb:
     65                 if (firstPtSet && lastPtSet && firstPt != lastPt) {
     66                     SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
     67                             firstPt.fX, firstPt.fY);
     68                     lastPtSet = false;
     69                 }
     70                 firstPt = pts[0];
     71                 firstPtSet = true;
     72                 continue;
     73             case SkPath::kLine_Verb:
     74                 SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", pts[0].fX, pts[0].fY,
     75                         pts[1].fX, pts[1].fY);
     76                 lastPt = pts[1];
     77                 lastPtSet = true;
     78                 break;
     79             case SkPath::kQuad_Verb:
     80                 SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
     81                         pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, pts[2].fX, pts[2].fY);
     82                 lastPt = pts[2];
     83                 lastPtSet = true;
     84                 break;
     85             case SkPath::kCubic_Verb:
     86                 SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}, {%1.9g,%1.9g}},\n",
     87                         pts[0].fX, pts[0].fY, pts[1].fX, pts[1].fY, pts[2].fX, pts[2].fY,
     88                         pts[3].fX, pts[3].fY);
     89                 lastPt = pts[3];
     90                 lastPtSet = true;
     91                 break;
     92             case SkPath::kClose_Verb:
     93                 if (firstPtSet && lastPtSet && firstPt != lastPt) {
     94                     SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
     95                             firstPt.fX, firstPt.fY);
     96                 }
     97                 firstPtSet = lastPtSet = false;
     98                 break;
     99             default:
    100                 SkDEBUGFAIL("bad verb");
    101                 return;
    102         }
    103     }
    104     if (firstPtSet && lastPtSet && firstPt != lastPt) {
    105         SkDebugf("{{%1.9g,%1.9g}, {%1.9g,%1.9g}},\n", lastPt.fX, lastPt.fY,
    106                 firstPt.fX, firstPt.fY);
    107     }
    108 }
    109 #endif
    110 
    111 void showOp(const SkPathOp op) {
    112     switch (op) {
    113         case kDifference_PathOp:
    114             SkDebugf("op difference\n");
    115             break;
    116         case kIntersect_PathOp:
    117             SkDebugf("op intersect\n");
    118             break;
    119         case kUnion_PathOp:
    120             SkDebugf("op union\n");
    121             break;
    122         case kXOR_PathOp:
    123             SkDebugf("op xor\n");
    124             break;
    125         case kReverseDifference_PathOp:
    126             SkDebugf("op reverse difference\n");
    127             break;
    128         default:
    129             SkASSERT(0);
    130     }
    131 }
    132 
    133 #if DEBUG_SHOW_TEST_NAME
    134 static char hexorator(int x) {
    135     if (x < 10) {
    136         return x + '0';
    137     }
    138     x -= 10;
    139     SkASSERT(x < 26);
    140     return x + 'A';
    141 }
    142 #endif
    143 
    144 void ShowTestName(PathOpsThreadState* state, int a, int b, int c, int d) {
    145 #if DEBUG_SHOW_TEST_NAME
    146     state->fSerialNo[0] = hexorator(state->fA);
    147     state->fSerialNo[1] = hexorator(state->fB);
    148     state->fSerialNo[2] = hexorator(state->fC);
    149     state->fSerialNo[3] = hexorator(state->fD);
    150     state->fSerialNo[4] = hexorator(a);
    151     state->fSerialNo[5] = hexorator(b);
    152     state->fSerialNo[6] = hexorator(c);
    153     state->fSerialNo[7] = hexorator(d);
    154     state->fSerialNo[8] = '\0';
    155     SkDebugf("%s\n", state->fSerialNo);
    156     if (strcmp(state->fSerialNo, state->fKey) == 0) {
    157         SkDebugf("%s\n", state->fPathStr);
    158     }
    159 #endif
    160 }
    161 
    162 const int bitWidth = 64;
    163 const int bitHeight = 64;
    164 
    165 static void scaleMatrix(const SkPath& one, const SkPath& two, SkMatrix& scale) {
    166     SkRect larger = one.getBounds();
    167     larger.join(two.getBounds());
    168     SkScalar largerWidth = larger.width();
    169     if (largerWidth < 4) {
    170         largerWidth = 4;
    171     }
    172     SkScalar largerHeight = larger.height();
    173     if (largerHeight < 4) {
    174         largerHeight = 4;
    175     }
    176     SkScalar hScale = (bitWidth - 2) / largerWidth;
    177     SkScalar vScale = (bitHeight - 2) / largerHeight;
    178     scale.reset();
    179     scale.preScale(hScale, vScale);
    180 }
    181 
    182 static int pathsDrawTheSame(SkBitmap& bits, const SkPath& scaledOne, const SkPath& scaledTwo,
    183         int& error2x2) {
    184     if (bits.width() == 0) {
    185         bits.allocN32Pixels(bitWidth * 2, bitHeight);
    186     }
    187     SkCanvas canvas(bits);
    188     canvas.drawColor(SK_ColorWHITE);
    189     SkPaint paint;
    190     canvas.save();
    191     const SkRect& bounds1 = scaledOne.getBounds();
    192     canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
    193     canvas.drawPath(scaledOne, paint);
    194     canvas.restore();
    195     canvas.save();
    196     canvas.translate(-bounds1.fLeft + 1 + bitWidth, -bounds1.fTop + 1);
    197     canvas.drawPath(scaledTwo, paint);
    198     canvas.restore();
    199     int errors2 = 0;
    200     int errors = 0;
    201     for (int y = 0; y < bitHeight - 1; ++y) {
    202         uint32_t* addr1 = bits.getAddr32(0, y);
    203         uint32_t* addr2 = bits.getAddr32(0, y + 1);
    204         uint32_t* addr3 = bits.getAddr32(bitWidth, y);
    205         uint32_t* addr4 = bits.getAddr32(bitWidth, y + 1);
    206         for (int x = 0; x < bitWidth - 1; ++x) {
    207             // count 2x2 blocks
    208             bool err = addr1[x] != addr3[x];
    209             if (err) {
    210                 errors2 += addr1[x + 1] != addr3[x + 1]
    211                         && addr2[x] != addr4[x] && addr2[x + 1] != addr4[x + 1];
    212                 errors++;
    213             }
    214         }
    215     }
    216     error2x2 = errors2;
    217     return errors;
    218 }
    219 
    220 static int pathsDrawTheSame(const SkPath& one, const SkPath& two, SkBitmap& bits, SkPath& scaledOne,
    221         SkPath& scaledTwo, int& error2x2) {
    222     SkMatrix scale;
    223     scaleMatrix(one, two, scale);
    224     one.transform(scale, &scaledOne);
    225     two.transform(scale, &scaledTwo);
    226     return pathsDrawTheSame(bits, scaledOne, scaledTwo, error2x2);
    227 }
    228 
    229 bool drawAsciiPaths(const SkPath& one, const SkPath& two, bool drawPaths) {
    230     if (!drawPaths) {
    231         return true;
    232     }
    233     const SkRect& bounds1 = one.getBounds();
    234     const SkRect& bounds2 = two.getBounds();
    235     SkRect larger = bounds1;
    236     larger.join(bounds2);
    237     SkBitmap bits;
    238     char out[256];
    239     int bitWidth = SkScalarCeilToInt(larger.width()) + 2;
    240     if (bitWidth * 2 + 1 >= (int) sizeof(out)) {
    241         return false;
    242     }
    243     int bitHeight = SkScalarCeilToInt(larger.height()) + 2;
    244     if (bitHeight >= (int) sizeof(out)) {
    245         return false;
    246     }
    247     bits.allocN32Pixels(bitWidth * 2, bitHeight);
    248     SkCanvas canvas(bits);
    249     canvas.drawColor(SK_ColorWHITE);
    250     SkPaint paint;
    251     canvas.save();
    252     canvas.translate(-bounds1.fLeft + 1, -bounds1.fTop + 1);
    253     canvas.drawPath(one, paint);
    254     canvas.restore();
    255     canvas.save();
    256     canvas.translate(-bounds1.fLeft + 1 + bitWidth, -bounds1.fTop + 1);
    257     canvas.drawPath(two, paint);
    258     canvas.restore();
    259     for (int y = 0; y < bitHeight; ++y) {
    260         uint32_t* addr1 = bits.getAddr32(0, y);
    261         int x;
    262         char* outPtr = out;
    263         for (x = 0; x < bitWidth; ++x) {
    264             *outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
    265         }
    266         *outPtr++ = '|';
    267         for (x = bitWidth; x < bitWidth * 2; ++x) {
    268             *outPtr++ = addr1[x] == (uint32_t) -1 ? '_' : 'x';
    269         }
    270         *outPtr++ = '\0';
    271         SkDebugf("%s\n", out);
    272     }
    273     return true;
    274 }
    275 
    276 static int comparePaths(skiatest::Reporter* reporter, const char* filename, const SkPath& one,
    277         const SkPath& two, SkBitmap& bitmap) {
    278     int errors2x2;
    279     SkPath scaledOne, scaledTwo;
    280     (void) pathsDrawTheSame(one, two, bitmap, scaledOne, scaledTwo, errors2x2);
    281     if (errors2x2 == 0) {
    282         return 0;
    283     }
    284     const int MAX_ERRORS = 9;
    285     REPORTER_ASSERT(reporter, errors2x2 <= MAX_ERRORS || !gComparePathsAssert);
    286     return errors2x2 > MAX_ERRORS ? errors2x2 : 0;
    287 }
    288 
    289 const int gTestFirst = 4;
    290 static int gTestNo = gTestFirst;
    291 static SkTDArray<SkPathOp> gTestOp;
    292 
    293 static void showPathOpPath(const char* testName, const SkPath& one, const SkPath& two,
    294         const SkPath& a, const SkPath& b, const SkPath& scaledOne, const SkPath& scaledTwo,
    295         const SkPathOp shapeOp, const SkMatrix& scale) {
    296     SkASSERT((unsigned) shapeOp < SK_ARRAY_COUNT(opStrs));
    297     SkString defaultTestName;
    298     if (!testName) {
    299         defaultTestName.printf("xOp%d%s", gTestNo, opSuffixes[shapeOp]);
    300         testName = defaultTestName.c_str();
    301     }
    302     SkDebugf("static void %s(skiatest::Reporter* reporter, const char* filename) {\n", testName);
    303     *gTestOp.append() = shapeOp;
    304     ++gTestNo;
    305     SkDebugf("    SkPath path, pathB;\n");
    306 #if DEBUG_SHOW_TEST_NAME
    307     SkPathOpsDebug::ShowOnePath(a, "path", false);
    308     SkPathOpsDebug::ShowOnePath(b, "pathB", false);
    309 #endif
    310     SkDebugf("    testPathOp(reporter, path, pathB, %s, filename);\n", opStrs[shapeOp]);
    311     SkDebugf("}\n");
    312     drawAsciiPaths(scaledOne, scaledTwo, true);
    313 }
    314 
    315 void ShowTestArray() {
    316     for (int x = gTestFirst; x < gTestNo; ++x) {
    317         SkDebugf("    TEST(xOp%d%s),\n", x, opSuffixes[gTestOp[x - gTestFirst]]);
    318     }
    319 }
    320 
    321 SK_DECLARE_STATIC_MUTEX(compareDebugOut3);
    322 SK_DECLARE_STATIC_MUTEX(compareDebugOut4);
    323 static int comparePaths(skiatest::Reporter* reporter, const char* testName, const SkPath& one,
    324         const SkPath& scaledOne, const SkPath& two, const SkPath& scaledTwo, SkBitmap& bitmap,
    325         const SkPath& a, const SkPath& b, const SkPathOp shapeOp, const SkMatrix& scale) {
    326     int errors2x2;
    327     (void) pathsDrawTheSame(bitmap, scaledOne, scaledTwo, errors2x2);
    328     if (errors2x2 == 0) {
    329         if (gShowPath) {
    330             showPathOpPath(testName, one, two, a, b, scaledOne, scaledTwo, shapeOp, scale);
    331         }
    332         return 0;
    333     }
    334     const int MAX_ERRORS = 8;
    335     if (errors2x2 > MAX_ERRORS && gComparePathsAssert) {
    336         SkAutoMutexAcquire autoM(compareDebugOut3);
    337         SkDebugf("\n*** this test fails ***\n");
    338         showPathOpPath(testName, one, two, a, b, scaledOne, scaledTwo, shapeOp, scale);
    339         REPORTER_ASSERT(reporter, 0);
    340     } else if (gShowPath || errors2x2 == MAX_ERRORS || errors2x2 == MAX_ERRORS - 1) {
    341         SkAutoMutexAcquire autoM(compareDebugOut4);
    342         showPathOpPath(testName, one, two, a, b, scaledOne, scaledTwo, shapeOp, scale);
    343     }
    344     return errors2x2 > MAX_ERRORS ? errors2x2 : 0;
    345 }
    346 
    347 // Default values for when reporter->verbose() is false.
    348 static int testNumber = 55;
    349 static const char* testName = "pathOpTest";
    350 
    351 static void writeTestName(const char* nameSuffix, SkMemoryWStream& outFile) {
    352     outFile.writeText(testName);
    353     outFile.writeDecAsText(testNumber);
    354     ++testNumber;
    355     if (nameSuffix) {
    356         outFile.writeText(nameSuffix);
    357     }
    358 }
    359 
    360 static void outputToStream(const char* pathStr, const char* pathPrefix, const char* nameSuffix,
    361         const char* testFunction, bool twoPaths, SkMemoryWStream& outFile) {
    362 #if 0
    363     outFile.writeText("<div id=\"");
    364     writeTestName(nameSuffix, outFile);
    365     outFile.writeText("\">\n");
    366     if (pathPrefix) {
    367         outFile.writeText(pathPrefix);
    368     }
    369     outFile.writeText(pathStr);
    370     outFile.writeText("</div>\n\n");
    371 
    372     outFile.writeText(marker);
    373     outFile.writeText("    ");
    374     writeTestName(nameSuffix, outFile);
    375     outFile.writeText(",\n\n\n");
    376 #endif
    377     outFile.writeText("static void ");
    378     writeTestName(nameSuffix, outFile);
    379     outFile.writeText("(skiatest::Reporter* reporter) {\n    SkPath path");
    380     if (twoPaths) {
    381         outFile.writeText(", pathB");
    382     }
    383     outFile.writeText(";\n");
    384     if (pathPrefix) {
    385         outFile.writeText(pathPrefix);
    386     }
    387     outFile.writeText(pathStr);
    388     outFile.writeText("    ");
    389     outFile.writeText(testFunction);
    390     outFile.writeText("\n}\n\n");
    391 #if 0
    392     outFile.writeText("static void (*firstTest)() = ");
    393     writeTestName(nameSuffix, outFile);
    394     outFile.writeText(";\n\n");
    395 
    396     outFile.writeText("static struct {\n");
    397     outFile.writeText("    void (*fun)();\n");
    398     outFile.writeText("    const char* str;\n");
    399     outFile.writeText("} tests[] = {\n");
    400     outFile.writeText("    TEST(");
    401     writeTestName(nameSuffix, outFile);
    402     outFile.writeText("),\n");
    403 #endif
    404     outFile.flush();
    405 }
    406 
    407 SK_DECLARE_STATIC_MUTEX(simplifyDebugOut);
    408 bool testSimplify(SkPath& path, bool useXor, SkPath& out, PathOpsThreadState& state,
    409                   const char* pathStr) {
    410     SkPath::FillType fillType = useXor ? SkPath::kEvenOdd_FillType : SkPath::kWinding_FillType;
    411     path.setFillType(fillType);
    412 #if DEBUG_SHOW_TEST_NAME
    413     if (gShowPath) {
    414         SkPathOpsDebug::ShowOnePath(path, "path", false);
    415     }
    416 #endif
    417     if (!Simplify(path, &out)) {
    418         SkDebugf("%s did not expect failure\n", __FUNCTION__);
    419         REPORTER_ASSERT(state.fReporter, 0);
    420         return false;
    421     }
    422     if (!state.fReporter->verbose()) {
    423         return true;
    424     }
    425     int result = comparePaths(state.fReporter, NULL, path, out, *state.fBitmap);
    426     if (result && gPathStrAssert) {
    427         SkAutoMutexAcquire autoM(simplifyDebugOut);
    428         char temp[8192];
    429         sk_bzero(temp, sizeof(temp));
    430         SkMemoryWStream stream(temp, sizeof(temp));
    431         const char* pathPrefix = NULL;
    432         const char* nameSuffix = NULL;
    433         if (fillType == SkPath::kEvenOdd_FillType) {
    434             pathPrefix = "    path.setFillType(SkPath::kEvenOdd_FillType);\n";
    435             nameSuffix = "x";
    436         }
    437         const char testFunction[] = "testSimplify(reporter, path);";
    438         outputToStream(pathStr, pathPrefix, nameSuffix, testFunction, false, stream);
    439         SkDebugf(temp);
    440         REPORTER_ASSERT(state.fReporter, 0);
    441     }
    442     state.fReporter->bumpTestCount();
    443     return result == 0;
    444 }
    445 
    446 bool testSimplify(skiatest::Reporter* reporter, const SkPath& path, const char* filename) {
    447 #if DEBUG_SHOW_TEST_NAME
    448     showPathData(path);
    449 #endif
    450     SkPath out;
    451     if (!Simplify(path, &out)) {
    452         SkDebugf("%s did not expect failure\n", __FUNCTION__);
    453         REPORTER_ASSERT(reporter, 0);
    454         return false;
    455     }
    456     SkBitmap bitmap;
    457     int result = comparePaths(reporter, filename, path, out, bitmap);
    458     if (result && gPathStrAssert) {
    459         REPORTER_ASSERT(reporter, 0);
    460     }
    461     reporter->bumpTestCount();
    462     return result == 0;
    463 }
    464 
    465 #if DEBUG_SHOW_TEST_NAME
    466 static void showName(const SkPath& a, const SkPath& b, const SkPathOp shapeOp) {
    467     SkDebugf("\n");
    468     showPathData(a);
    469     showOp(shapeOp);
    470     showPathData(b);
    471 }
    472 #endif
    473 
    474 static bool innerPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
    475                  const SkPathOp shapeOp, const char* testName, bool threaded) {
    476 #if DEBUG_SHOW_TEST_NAME
    477     showName(a, b, shapeOp);
    478 #endif
    479     SkPath out;
    480     if (!Op(a, b, shapeOp, &out) ) {
    481         SkDebugf("%s did not expect failure\n", __FUNCTION__);
    482         REPORTER_ASSERT(reporter, 0);
    483         return false;
    484     }
    485     if (threaded && !reporter->verbose()) {
    486         return true;
    487     }
    488     SkPath pathOut, scaledPathOut;
    489     SkRegion rgnA, rgnB, openClip, rgnOut;
    490     openClip.setRect(-16000, -16000, 16000, 16000);
    491     rgnA.setPath(a, openClip);
    492     rgnB.setPath(b, openClip);
    493     rgnOut.op(rgnA, rgnB, (SkRegion::Op) shapeOp);
    494     rgnOut.getBoundaryPath(&pathOut);
    495 
    496     SkMatrix scale;
    497     scaleMatrix(a, b, scale);
    498     SkRegion scaledRgnA, scaledRgnB, scaledRgnOut;
    499     SkPath scaledA, scaledB;
    500     scaledA.addPath(a, scale);
    501     scaledA.setFillType(a.getFillType());
    502     scaledB.addPath(b, scale);
    503     scaledB.setFillType(b.getFillType());
    504     scaledRgnA.setPath(scaledA, openClip);
    505     scaledRgnB.setPath(scaledB, openClip);
    506     scaledRgnOut.op(scaledRgnA, scaledRgnB, (SkRegion::Op) shapeOp);
    507     scaledRgnOut.getBoundaryPath(&scaledPathOut);
    508     SkBitmap bitmap;
    509     SkPath scaledOut;
    510     scaledOut.addPath(out, scale);
    511     scaledOut.setFillType(out.getFillType());
    512     int result = comparePaths(reporter, testName, pathOut, scaledPathOut, out, scaledOut, bitmap,
    513             a, b, shapeOp, scale);
    514     if (result && gPathStrAssert) {
    515         REPORTER_ASSERT(reporter, 0);
    516     }
    517     reporter->bumpTestCount();
    518     return result == 0;
    519 }
    520 
    521 bool testPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
    522                  const SkPathOp shapeOp, const char* testName) {
    523     return innerPathOp(reporter, a, b, shapeOp, testName, false);
    524 }
    525 
    526 bool testPathFailOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
    527                  const SkPathOp shapeOp, const char* testName) {
    528 #if DEBUG_SHOW_TEST_NAME
    529     showName(a, b, shapeOp);
    530 #endif
    531     SkPath out;
    532     if (Op(a, b, shapeOp, &out) ) {
    533         SkDebugf("%s test is expected to fail\n", __FUNCTION__);
    534         REPORTER_ASSERT(reporter, 0);
    535         return false;
    536     }
    537     return true;
    538 }
    539 
    540 bool testThreadedPathOp(skiatest::Reporter* reporter, const SkPath& a, const SkPath& b,
    541                  const SkPathOp shapeOp, const char* testName) {
    542     return innerPathOp(reporter, a, b, shapeOp, testName, true);
    543 }
    544 
    545 SK_DECLARE_STATIC_MUTEX(gMutex);
    546 
    547 void initializeTests(skiatest::Reporter* reporter, const char* test) {
    548 #if 0  // doesn't work yet
    549     SK_CONF_SET("images.jpeg.suppressDecoderWarnings", true);
    550     SK_CONF_SET("images.png.suppressDecoderWarnings", true);
    551 #endif
    552     if (reporter->verbose()) {
    553         SkAutoMutexAcquire lock(gMutex);
    554         testName = test;
    555         size_t testNameSize = strlen(test);
    556         SkFILEStream inFile("../../experimental/Intersection/op.htm");
    557         if (inFile.isValid()) {
    558             SkTDArray<char> inData;
    559             inData.setCount((int) inFile.getLength());
    560             size_t inLen = inData.count();
    561             inFile.read(inData.begin(), inLen);
    562             inFile.setPath(NULL);
    563             char* insert = strstr(inData.begin(), marker);
    564             if (insert) {
    565                 insert += sizeof(marker) - 1;
    566                 const char* numLoc = insert + 4 /* indent spaces */ + testNameSize - 1;
    567                 testNumber = atoi(numLoc) + 1;
    568             }
    569         }
    570     }
    571 }
    572 
    573 void outputProgress(char* ramStr, const char* pathStr, SkPath::FillType pathFillType) {
    574     const char testFunction[] = "testSimplify(path);";
    575     const char* pathPrefix = NULL;
    576     const char* nameSuffix = NULL;
    577     if (pathFillType == SkPath::kEvenOdd_FillType) {
    578         pathPrefix = "    path.setFillType(SkPath::kEvenOdd_FillType);\n";
    579         nameSuffix = "x";
    580     }
    581     SkMemoryWStream rRamStream(ramStr, PATH_STR_SIZE);
    582     outputToStream(pathStr, pathPrefix, nameSuffix, testFunction, false, rRamStream);
    583 }
    584 
    585 void outputProgress(char* ramStr, const char* pathStr, SkPathOp op) {
    586     const char testFunction[] = "testOp(path);";
    587     SkASSERT((size_t) op < SK_ARRAY_COUNT(opSuffixes));
    588     const char* nameSuffix = opSuffixes[op];
    589     SkMemoryWStream rRamStream(ramStr, PATH_STR_SIZE);
    590     outputToStream(pathStr, NULL, nameSuffix, testFunction, true, rRamStream);
    591 }
    592 
    593 void RunTestSet(skiatest::Reporter* reporter, TestDesc tests[], size_t count,
    594                 void (*firstTest)(skiatest::Reporter* , const char* filename),
    595                 void (*stopTest)(skiatest::Reporter* , const char* filename), bool reverse) {
    596     size_t index;
    597     if (firstTest) {
    598         index = count - 1;
    599         while (index > 0 && tests[index].fun != firstTest) {
    600             --index;
    601         }
    602 #if DEBUG_SHOW_TEST_NAME
    603         SkDebugf("<div id=\"%s\">\n", tests[index].str);
    604         SkDebugf("  %s [%s]\n", __FUNCTION__, tests[index].str);
    605 #endif
    606         (*tests[index].fun)(reporter, tests[index].str);
    607         if (tests[index].fun == stopTest) {
    608             return;
    609         }
    610     }
    611     index = reverse ? count - 1 : 0;
    612     size_t last = reverse ? 0 : count - 1;
    613     do {
    614         if (tests[index].fun != firstTest) {
    615     #if DEBUG_SHOW_TEST_NAME
    616             SkDebugf("<div id=\"%s\">\n", tests[index].str);
    617             SkDebugf("  %s [%s]\n", __FUNCTION__, tests[index].str);
    618     #endif
    619             (*tests[index].fun)(reporter, tests[index].str);
    620         }
    621         if (tests[index].fun == stopTest) {
    622             SkDebugf("lastTest\n");
    623             break;
    624         }
    625         if (index == last) {
    626             break;
    627         }
    628         index += reverse ? -1 : 1;
    629     } while (true);
    630 }
    631