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Welcome

This guide is intended to provide resources for those wanting to help test Metropolis EIPs. The CPP team is currently in the middle of a migration from EthDocs to a documentation site that is more dedicated to CPP-Ethereum so the documentation on creating tests for Ethereum using testeth is scattered. Everything you will need to get started should be compiled below.

Suggested skill sets needed to create and run tests

Ability to compile/build testeth and LLL compiler or run a docker file.
Ability to understand the LLL Ethereum language.
Ability to understand EIPs, particuarly [those that are going to be going into t

Keybase proof

I hereby claim:

I am hugo-dc on github.
I am hugo_dc (https://keybase.io/hugo_dc) on keybase.
I have a public key ASBn7MHl-WLMUwI_gwYYZb1CjwaWKjjbXlaB6kIFyM4zsAo

To claim this, I am signing this object:

Transaction Gas:

libethcore/Transactionbase.cpp

In function baseGasRequired, print the initial g, it can be 'transaction cost' or 'create cost', and print g again before it gets returned, now it will contain the cost for the sent in the transaction.

https://github.com/ethereum/cpp-ethereum/blob/c7528cdcd417e50a01909c8b621ad12c7d491856/libethcore/TransactionBase.cpp#L202

libethereum/Executive.cpp

	import Graphics.Win32.Window
	import Graphics.Win32.GDI.Bitmap
	import Graphics.Win32.GDI.HDC
	import Graphics.Win32.GDI.Graphics2D

	main = do desktop <- getDesktopWindow -- Grab the Hwnd of the desktop, GetDC 0, GetDC NULL etc all work too
	hdc <- getWindowDC (Just desktop) -- Get the dc handle of the desktop
	(x,y,r,b) <- getWindowRect desktop -- Find the size of the desktop so we can know which size the destination bitmap should be
	-- (left, top, right, bottom)
	newDC <- createCompatibleDC (Just hdc) -- Create a new DC to hold the copied image. It should be compatible with the source DC

	def cons(x, y):
	return lambda f: f(x, y)

	def car(x):
	# Fill out this function
	pass

	if car(cons(1, 5)) == 1:
	print 'Solved!'
	else:

	[test](develop)$ ETHEREUM_TEST_PATH=/Users/hugo/workspace/EWASM/GasUsage/tests ./testeth -t GeneralStateTests/stEWASMTests -- --filltests --vm hera --singlenet "Byzantium"
	Running 1 test case...
	Test Case "stEWASMTests":
	Executing...
	$callDelegate 3e8 0 0 14 2
	Executing...
	getAddress 20
	storageStore 0 20
	Out of gas :(
	DEBUG printMemHex(0x36:0x20): 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

	\| Testcase \| Passing \| Failures \|
	\|--------------------------------------+---------+----------\|
	\| stArgsZeroOneBalance \| \| 28 \|
	\| stAttackTest \| \| 1 \|
	\| stBadOpcode \| X \| \|
	\| stBugs \| \| 2 \|
	\| stCallCodes \| \| 1 \|
	\| stCallCreateCallCodeTest \| \| 1 \|
	\| stCallDelegateCodesCallCodeHomestead \| \| 2 \|
	\| stCallDelegateCodesHomestead \| \| 33 \|

	test/testeth -t GeneralStateTests/stCallCodes -- --testpath /home/ewasm/hugo-dc/cpp-ethereum/test/jsontests --singlenet "Byzantium" --singletest "call_OOG_additionalGasCosts1" --jsontrace ''

	Running tests using path: "/home/ewasm/hugo-dc/cpp-ethereum/test/jsontests"
	Running 1 test case...
	Test Case "stCallCodes":
	100%
	[{"depth":"0","gas":"9000","gasCost":"3","memory":[],"op":"PUSH1","pc":"0","stack":[],"storage":{}},
	{"depth":"0","gas":"8997","gasCost":"3","op":"PUSH1","pc":"2","stack":["0x40"]},
	{"depth":"0","gas":"8994","gasCost":"3","op":"PUSH1","pc":"4","stack":["0x40","0x00"]},
	{"depth":"0","gas":"8991","gasCost":"3","op":"PUSH1","pc":"6","stack":["0x40","0x00","0x40"]},