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Regex fuzzer: region deletion and duplication

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Adds two transformations, one that deletes a random region enclosed
by a given delimiter and another one that duplicates a region by
inserting it at a position of the WGSL code after a delimiter.

Fixes: tint:1072.
Fixes: tint:1073.

Change-Id: Icb10a7f16a783d5eb8f75a48c4015eb87ea1d174
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60200
Reviewed-by: Alastair Donaldson <afdx@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
This commit is contained in:
egj
2021-07-29 15:40:57 +00:00
committed by Tint LUCI CQ
parent 5a53634764
commit f5490c732d
4 changed files with 252 additions and 40 deletions
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90
fuzzers/tint_regex_fuzzer/regex_fuzzer_tests.cc
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@@ -31,7 +31,7 @@ TEST(SwapRegionsTest, SwapIntervalsEdgeNonConsecutive) {
// this call should swap R1 with R3.
SwapIntervals(0, R1.length() - 1, R1.length() + R2.length(),
all_regions.length() - 1, &all_regions);
all_regions.length() - 1, all_regions);
ASSERT_EQ(R3 + R2 + R1, all_regions);
}
@@ -47,7 +47,7 @@ TEST(SwapRegionsTest, SwapIntervalsNonConsecutiveNonEdge) {
SwapIntervals(R1.length(), R1.length() + R2.length() - 1,
R1.length() + R2.length() + R3.length(),
R1.length() + R2.length() + R3.length() + R4.length() - 1,
&all_regions);
all_regions);
ASSERT_EQ(R1 + R4 + R3 + R2 + R5, all_regions);
}
@@ -61,7 +61,7 @@ TEST(SwapRegionsTest, SwapIntervalsConsecutiveEdge) {
// this call should swap R2 with R3.
SwapIntervals(R1.length(), R1.length() + R2.length() - 1,
R1.length() + R2.length(),
R1.length() + R2.length() + R3.length() - 1, &all_regions);
R1.length() + R2.length() + R3.length() - 1, all_regions);
ASSERT_EQ(R1 + R3 + R2 + R4, all_regions);
}
@@ -80,11 +80,93 @@ TEST(SwapRegionsTest, SwapIntervalsConsecutiveNonEdge) {
R1.length() + R2.length() + R3.length() + R4.length() - 1,
R1.length() + R2.length() + R3.length() + R4.length(),
R1.length() + R2.length() + R3.length() + R4.length() + R5.length() - 1,
&all_regions);
all_regions);
ASSERT_EQ(R1 + R2 + R3 + R5 + R4, all_regions);
}
// Deletes the first region.
TEST(DeleteRegionTest, DeleteFirstRegion) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should delete R1.
DeleteInterval(0, R1.length() - 1, all_regions);
ASSERT_EQ(R2 + R3 + R4 + R5, all_regions);
}
// Deletes the last region.
TEST(DeleteRegionTest, DeleteLastRegion) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should delete R5.
DeleteInterval(R1.length() + R2.length() + R3.length() + R4.length(),
all_regions.length() - 1, all_regions);
ASSERT_EQ(R1 + R2 + R3 + R4, all_regions);
}
// Deletes the middle region.
TEST(DeleteRegionTest, DeleteMiddleRegion) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should delete R3.
DeleteInterval(R1.length() + R2.length(),
R1.length() + R2.length() + R3.length() - 1, all_regions);
ASSERT_EQ(R1 + R2 + R4 + R5, all_regions);
}
TEST(InsertRegionTest, InsertRegionTest1) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should insert R2 after R4.
DuplicateInterval(R1.length(), R1.length() + R2.length() - 1,
R1.length() + R2.length() + R3.length() + R4.length() - 1,
all_regions);
ASSERT_EQ(R1 + R2 + R3 + R4 + R2 + R5, all_regions);
}
TEST(InsertRegionTest, InsertRegionTest2) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should insert R3 after R1.
DuplicateInterval(R1.length() + R2.length(),
R1.length() + R2.length() + R3.length() - 1,
R1.length() - 1, all_regions);
ASSERT_EQ(R1 + R3 + R2 + R3 + R4 + R5, all_regions);
}
TEST(InsertRegionTest, InsertRegionTest3) {
std::string R1 = "|region1|", R2 = "; region2;",
R3 = "---------region3---------", R4 = "++region4++",
R5 = "***region5***";
std::string all_regions = R1 + R2 + R3 + R4 + R5;
// This call should insert R2 after R5.
DuplicateInterval(R1.length(), R1.length() + R2.length() - 1,
all_regions.length() - 1, all_regions);
ASSERT_EQ(R1 + R2 + R3 + R4 + R5 + R2, all_regions);
}
} // namespace
} // namespace regex_fuzzer
} // namespace fuzzers