add readme file

1 files changed, 18 insertions, 0 deletions

diff --git a/src/GeneralStateTestsFiller/stArgsZeroOneBalance/README.md b/src/GeneralStateTestsFiller/stArgsZeroOneBalance/README.md
new file mode 100644
index 000000000..01fe13164
--- /dev/null
+++ b/src/GeneralStateTestsFiller/stArgsZeroOneBalance/README.md
@@ -0,0 +1,18 @@
+This tests contain opcodes that has input arguments.But that arguments passed as output of another opcode. 
+In this case it's Balance opcode. Each test has 2 transactions: one makes balance to return 0, another one makes balance to return 1.
+
+This is done so evmjit or other compiler would not define opcode arguments as constant, but as a variable rather. Because evmjit encountered some bugs for this kind of scenario.
+
+
+Pseudo code description:
+
+```
+foreach opcodes as opcode
+{
+ a = 0
+opcode (a,a, ...)
+
+ a = 1
+opcode (a,a, ...)
+}
+```