SDK modules simulations

[fedekunze]

Closes #187

Description

Adds support for simulations

---

For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

---

For admin use:

• Added appropriate labels to PR (ex. WIP, R4R, docs, etc)
• Reviewers assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[thomasmodeneis]

Are you planning to add this tests to the CI ?

[fedekunze]

not until travis is merged. Feel free to test it

[noot]

@fedekunze I got an error when running the second test:

$ make test-sim-custom-genesis-fast
Running custom genesis simulation...
By default, /home/elizabeth/.emintd/config/genesis.json will be used.
=== RUN   TestFullAppSimulation
Starting SimulateFromSeed with randomness created with seed 99
Randomized simulation params: 
{}
Starting the simulation from time Tue Apr 28 14:43:50 UTC 2020 (unixtime 1588085030)
Simulating... block 1/100, operation 0/0.Logs to writing to /home/elizabeth/.simapp/simulations/2020-04-28_15:48:21.log
--- FAIL: TestFullAppSimulation (0.14s)
    simulate.go:284: error on block  1/100, operation (0/268) from x/staking:
        pubKey does not match signer address cosmos19mnmuhxrj9l07fgy5zhpl9tu30928cux24dm09 with signer index: 0: invalid pubkey [cosmos/cosmos-sdk@v0.34.4-0.20200403200637-7f78e61b93a5/x/auth/ante/sigverify.go:80]
        Comment: 
FAIL
FAIL	github.com/cosmos/ethermint/app	0.231s
FAIL
Makefile:266: recipe for target 'test-sim-custom-genesis-fast' failed
make: *** [test-sim-custom-genesis-fast] Error 1

let me know if I'm running it incorrectly

[fedekunze]

@noot test-sim-custom-genesis-fast runs the simulation with a genesis state provided. Probably the simulation account generates a tendermint public key which is different from the one we're using on ethermint.

I just run make test-sim-multi-seed-short which worked fine:

Running multi-seed application simulation. This may take awhile!
Allocating 4 workers...
[W3] Worker is up and running
[W2] Worker is up and running
[W1] Worker is up and running
[W0] Worker is up and running
[W3] Spawned simulation with pid 52602 [seed=1 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-1-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-1-date-04-29-2020_092052.stderr]
[W2] Spawned simulation with pid 52605 [seed=2 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 52603 [seed=4 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-4-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-4-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 52604 [seed=7 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-7-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-7-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 52714 [seed=32 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-32-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-32-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 52743 [seed=123 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-123-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-123-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 52767 [seed=124 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-124-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-124-date-04-29-2020_092052.stderr]
.
[W2] Spawned simulation with pid 52795 [seed=582 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-582-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-582-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 52822 [seed=1893 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-1893-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-1893-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 52850 [seed=2989 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2989-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2989-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 52879 [seed=3012 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-3012-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-3012-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 52907 [seed=4728 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-4728-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-4728-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 52935 [seed=37827 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-37827-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-37827-date-04-29-2020_092052.stderr]
[W3] Spawned simulation with pid 52964 [seed=981928 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-981928-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-981928-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 52991 [seed=87821 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-87821-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-87821-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53019 [seed=891823782 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-891823782-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-891823782-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53047 [seed=989182 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-989182-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-989182-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 53074 [seed=89182391 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-89182391-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-89182391-date-04-29-2020_092052.stderr]
.
[W2] Spawned simulation with pid 53104 [seed=11 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-11-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-11-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53138 [seed=22 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-22-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-22-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 53164 [seed=44 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-44-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-44-date-04-29-2020_092052.stderr]
.
[W2] Spawned simulation with pid 53194 [seed=77 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-77-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-77-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53220 [seed=99 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-99-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-99-date-04-29-2020_092052.stderr]
[W3] Spawned simulation with pid 53245 [seed=2020 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2020-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-2020-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 53276 [seed=3232 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-3232-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-3232-date-04-29-2020_092052.stderr]
[W2] Spawned simulation with pid 53302 [seed=123123 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-123123-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-123123-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 53334 [seed=124124 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-124124-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-124124-date-04-29-2020_092052.stderr]
[W3] Spawned simulation with pid 53361 [seed=582582 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-582582-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-582582-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53393 [seed=18931893 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-18931893-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-18931893-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 53414 [seed=29892989 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-29892989-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-29892989-date-04-29-2020_092052.stderr]
[W3] Spawned simulation with pid 53450 [seed=30123012 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-30123012-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-30123012-date-04-29-2020_092052.stderr]
[W1] Spawned simulation with pid 53479 [seed=47284728 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-47284728-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-47284728-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 53505 [seed=7601778 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-7601778-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-7601778-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53535 [seed=8090485 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-8090485-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-8090485-date-04-29-2020_092052.stderr]
[W0] Spawned simulation with pid 53561 [seed=977367484 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-977367484-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-977367484-date-04-29-2020_092052.stderr]
.
[W2] Spawned simulation with pid 53594 [seed=491163361 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-491163361-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-491163361-date-04-29-2020_092052.stderr]
[W3] Spawned simulation with pid 53625 [seed=424254581 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-424254581-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-424254581-date-04-29-2020_092052.stderr]
.
[W1] Spawned simulation with pid 53657 [seed=673398983 stdout=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-673398983-date-04-29-2020_092052.stdout stderr=/var/folders/48/dv7qpgqd7wqfxkqx9vnhgc2w0000gn/T/sim-logs-470857436/app-simulation-seed-673398983-date-04-29-2020_092052.stderr]
[W3] no seeds left, shutting down
[W0] no seeds left, shutting down
[W1] no seeds left, shutting down
.
[W2] no seeds left, shutting down

I propose to merge this and I'll investigate the simulation issue on the SDK