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Adopted DENSITY param in test_dirs fuzz tests

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Originally implemented in test_files, the DENSITY param sort of squishes
the files/dirs together, so random fuzzing is more likely to end up with
mkdir/rename collisions. These can be a bit more interesting for finding
weird corner cases.
This commit is contained in:
Christopher Haster
2024-05-22 12:42:07 -05:00
parent 56b18dfd9a
commit b3feeea385
1 changed files with 18 additions and 10 deletions
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tests/test_dirs.toml
+18 -10
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@@ -1278,6 +1278,8 @@ code = '''
[cases.test_dirs_mkdir_fuzz]
defines.N = [1, 2, 4, 8, 16, 32, 64, 128, 256, 512]
# do more ops than dirs to encourage rename collisions
defines.DENSITY = 2
defines.PARENT = [false, true]
defines.REMOUNT = [false, true]
defines.SEED = 'range(20)'
@@ -1304,8 +1306,8 @@ code = '''
uint32_t prng = SEED;
for (lfs_size_t i = 0; i < N; i++) {
// choose a pseudo-random number, truncate to 3 hexadecimals
lfs_size_t x = TEST_PRNG(&prng) % 0x1000;
// choose a pseudo-random number
lfs_size_t x = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
// insert into our sim
for (lfs_size_t j = 0;; j++) {
@@ -4201,6 +4203,8 @@ code = '''
[cases.test_dirs_rm_fuzz]
defines.N = [1, 2, 4, 8, 16, 32, 64, 128, 256, 512]
# do more ops than dirs to encourage rename collisions
defines.DENSITY = 2
defines.PARENT = [false, true]
defines.REMOUNT = [false, true]
defines.SEED = 'range(20)'
@@ -4231,8 +4235,8 @@ code = '''
uint8_t op = TEST_PRNG(&prng) % 2;
if (op == 0 || sim_size == 0) {
// choose a pseudo-random number, truncate to 3 hexadecimals
lfs_size_t x = TEST_PRNG(&prng) % 0x1000;
// choose a pseudo-random number
lfs_size_t x = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
// insert into our sim
for (lfs_size_t j = 0;; j++) {
if (j >= sim_size || sim[j] >= x) {
@@ -6669,6 +6673,8 @@ code = '''
[cases.test_dirs_mv_fuzz]
defines.N = [1, 2, 4, 8, 16, 32, 64, 128, 256, 512]
# do more ops than dirs to encourage rename collisions
defines.DENSITY = 2
defines.PARENT = [false, true]
defines.REMOUNT = [false, true]
defines.SEED = 'range(20)'
@@ -6699,8 +6705,8 @@ code = '''
uint8_t op = TEST_PRNG(&prng) % 2;
if (op == 0 || sim_size == 0) {
// choose a pseudo-random number, truncate to 3 hexadecimals
lfs_size_t x = TEST_PRNG(&prng) % 0x1000;
// choose a pseudo-random number
lfs_size_t x = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
// insert into our sim
for (lfs_size_t j = 0;; j++) {
if (j >= sim_size || sim[j] >= x) {
@@ -6729,7 +6735,7 @@ code = '''
// number to rename to
lfs_size_t j = TEST_PRNG(&prng) % sim_size;
lfs_size_t x = sim[j];
lfs_size_t y = TEST_PRNG(&prng) % 0x1000;
lfs_size_t y = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
for (lfs_size_t k = 0;; k++) {
if (k >= sim_size || sim[k] >= y) {
// already seen and not a noop?
@@ -6814,6 +6820,8 @@ code = '''
# test all of the operations together
[cases.test_dirs_general_fuzz]
defines.N = [1, 2, 4, 8, 16, 32, 64, 128, 256, 512]
# do more ops than dirs to encourage rename collisions
defines.DENSITY = 2
defines.PARENT = [false, true]
defines.REMOUNT = [false, true]
defines.SEED = 'range(20)'
@@ -6844,8 +6852,8 @@ code = '''
uint8_t op = TEST_PRNG(&prng) % 3;
if (op == 0 || sim_size == 0) {
// choose a pseudo-random number, truncate to 3 hexadecimals
lfs_size_t x = TEST_PRNG(&prng) % 0x1000;
// choose a pseudo-random number
lfs_size_t x = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
// insert into our sim
for (lfs_size_t j = 0;; j++) {
if (j >= sim_size || sim[j] >= x) {
@@ -6888,7 +6896,7 @@ code = '''
// number to rename to
lfs_size_t j = TEST_PRNG(&prng) % sim_size;
lfs_size_t x = sim[j];
lfs_size_t y = TEST_PRNG(&prng) % 0x1000;
lfs_size_t y = TEST_PRNG(&prng) % ((N+DENSITY-1) / DENSITY);
for (lfs_size_t k = 0;; k++) {
if (k >= sim_size || sim[k] >= y) {
// already seen and not a noop?