1 2datagen > file 3 4# Compress with various levels and ensure that their sizes are ordered 5zstd --fast=10 file -o file-f10.zst -q 6zstd --fast=1 file -o file-f1.zst -q 7zstd -1 file -o file-1.zst -q 8zstd -19 file -o file-19.zst -q 9 10zstd -t file-f10.zst file-f1.zst file-1.zst file-19.zst 114 files decompressed : 262148 bytes total 12 13cmp_size -lt file-19.zst file-1.zst 14cmp_size -lt file-1.zst file-f1.zst 15cmp_size -lt file-f1.zst file-f10.zst 16 17# Test default levels 18zstd --fast file -f -q 19cmp file.zst file-f1.zst || die "--fast is not level -1" 20 21zstd -0 file -o file-0.zst -q 22zstd -f file -q 23cmp file.zst file-0.zst || die "Level 0 is not the default level" 24 25# Test level clamping 26zstd -99 file -o file-99.zst -q 27cmp file-19.zst file-99.zst || die "Level 99 is clamped to 19" 28zstd --fast=200000 file -c | zstd -t 29/*stdin*\ : 65537 bytes 30 31zstd -5000000000 -f file && die "Level too large, must fail" ||: 32error: numeric value overflows 32-bit unsigned int 33zstd --fast=5000000000 -f file && die "Level too large, must fail" ||: 34error: numeric value overflows 32-bit unsigned int 35 36# Test setting a level through the environment variable 37ZSTD_CLEVEL=-10 zstd file -o file-f10-env.zst -q 38ZSTD_CLEVEL=1 zstd file -o file-1-env.zst -q 39ZSTD_CLEVEL=+19 zstd file -o file-19-env.zst -q 40ZSTD_CLEVEL=+99 zstd file -o file-99-env.zst -q 41 42cmp file-f10.zst file-f10-env.zst || die "Environment variable failed to set level" 43cmp file-1.zst file-1-env.zst || die "Environment variable failed to set level" 44cmp file-19.zst file-19-env.zst || die "Environment variable failed to set level" 45cmp file-99.zst file-99-env.zst || die "Environment variable failed to set level" 46 47# Test invalid environment clevel is the default level 48zstd -f file -q 49ZSTD_CLEVEL=- zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 50Ignore environment variable setting ZSTD_CLEVEL=-: not a valid integer value 51ZSTD_CLEVEL=+ zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 52Ignore environment variable setting ZSTD_CLEVEL=+: not a valid integer value 53ZSTD_CLEVEL=a zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 54Ignore environment variable setting ZSTD_CLEVEL=a: not a valid integer value 55ZSTD_CLEVEL=-a zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 56Ignore environment variable setting ZSTD_CLEVEL=-a: not a valid integer value 57ZSTD_CLEVEL=+a zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 58Ignore environment variable setting ZSTD_CLEVEL=+a: not a valid integer value 59ZSTD_CLEVEL=3a7 zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 60Ignore environment variable setting ZSTD_CLEVEL=3a7: not a valid integer value 61ZSTD_CLEVEL=5000000000 zstd -f file -o file-env.zst -q ; cmp file.zst file-env.zst 62Ignore environment variable setting ZSTD_CLEVEL=5000000000: numeric value too large 63 64# Test environment clevel is overridden by command line 65ZSTD_CLEVEL=10 zstd -f file -1 -o file-1-env.zst -q 66ZSTD_CLEVEL=10 zstd -f file --fast=1 -o file-f1-env.zst -q 67 68cmp file-1.zst file-1-env.zst || die "Environment variable not overridden" 69cmp file-f1.zst file-f1-env.zst || die "Environment variable not overridden" 70