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add gdb attach process to test README

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Gregory Sanders 2017-06-27 10:06:34 -04:00
parent 7c87a9c748
commit 7ec3343df2
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test/README.md
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@ -155,6 +155,26 @@ import pdb; pdb.set_trace()
anywhere in the test. You will then be able to inspect variables, as well as anywhere in the test. You will then be able to inspect variables, as well as
call methods that interact with the bitcoind nodes-under-test. call methods that interact with the bitcoind nodes-under-test.
If further introspection of the bitcoind instances themselves becomes
necessary, this can be accomplished by first setting a pdb breakpoint
at an appropriate location, running the test to that point, then using
`gdb` to attach to the process and debug.
For instance, to attach to `self.node[1]` during a run:
```bash
2017-06-27 14:13:56.686000 TestFramework (INFO): Initializing test directory /tmp/user/1000/testo9vsdjo3
```
use the directory path to get the pid from the pid file:
```bash
cat /tmp/user/1000/testo9vsdjo3/node1/regtest/bitcoind.pid
gdb /home/example/bitcoind <pid>
```
Note: gdb attach step may require `sudo`
### Util tests ### Util tests
Util tests can be run locally by running `test/util/bitcoin-util-test.py`. Util tests can be run locally by running `test/util/bitcoin-util-test.py`.