From a5d914b425d239934dfd4628a600631e5809110f Mon Sep 17 00:00:00 2001
From: Manfred Touron <94029+moul@users.noreply.github.com>
Date: Wed, 18 May 2022 14:52:11 +0200
Subject: [PATCH] chore(test): setup a "flappy tests" system (#201)

---
 .github/workflows/unit-tests.yml    |   1 +
 Makefile                            |  13 ++--
 go.mod                              |  19 ++++-
 go.sum                              | 106 +++++++++++++++++++++++++++-
 misc/devdeps/README.md              |   1 +
 misc/devdeps/deps.go                |  11 +++
 misc/devdeps/go.mod                 |  12 ++++
 misc/devdeps/go.sum                 |  52 ++++++++++++++
 pkgs/bft/blockchain/reactor_test.go |   5 +-
 pkgs/bft/consensus/replay_test.go   |   5 +-
 pkgs/bft/mempool/reactor_test.go    |   5 +-
 pkgs/p2p/transport_test.go          |   5 +-
 pkgs/testutils/flappy.go            |  24 +++++++
 tests/files/file.go                 |   0
 14 files changed, 245 insertions(+), 14 deletions(-)
 create mode 100644 misc/devdeps/README.md
 create mode 100644 misc/devdeps/deps.go
 create mode 100644 misc/devdeps/go.mod
 create mode 100644 misc/devdeps/go.sum
 create mode 100644 pkgs/testutils/flappy.go
 delete mode 100644 tests/files/file.go

diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index ff36e9d0f28..1908b7b03b7 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -26,6 +26,7 @@ jobs:
           - test.files2
           - test.packages
           - test.examples
+          - test.flappy
     runs-on: ubuntu-latest
     timeout-minutes: 21
     steps:
diff --git a/Makefile b/Makefile
index 91e4bc5ff7e..3f7408c0e96 100644
--- a/Makefile
+++ b/Makefile
@@ -55,19 +55,24 @@ examples.build: install_gnodev examples.precompile
 
 ########################################
 # Test suite
-.PHONY: test test.go test.gno test.files1 test.files2 test.realm test.packages
-test: test.gno test.go
+.PHONY: test test.go test.gno test.files1 test.files2 test.realm test.packages test.flappy
+test: test.gno test.go test.flappy
 	@echo "Full test suite finished."
 
 test.gno: test.files1 test.files2 test.realm test.packages test.examples
 	go test tests/*.go -v -run "TestFileStr"
 	go test tests/*.go -v -run "TestSelectors"
 
+test.flappy:
+	# flappy tests should work "sometimes" (at least once)
+	TEST_STABILITY=flappy go run -modfile ./misc/devdeps/go.mod moul.io/testman test -test.v -timeout=20m -retry=10 -run ^TestFlappy \
+		./pkgs/bft/consensus ./pkgs/bft/blockchain ./pkgs/bft/mempool ./pkgs/p2p
+
 test.go:
 	go test . -v
 	# -p 1 shows test failures as they come
 	# maybe another way to do this?
-	go test ./pkgs/... -v -p 1
+	go test ./pkgs/... -v -p 1 -timeout=20m
 
 test.files1:
 	go test tests/*.go -v -test.short -run "TestFiles1/" --timeout 20m
@@ -104,5 +109,5 @@ genproto2:
 	find pkgs | grep -v "^pkgs\/amino" | grep "pbbindings" | xargs rm
 	find pkgs | grep -v "^pkgs\/amino" | grep "pb.go" | xargs rm
 	#@rm gno.proto || true
-	@rm pbbindings.go || true 
+	@rm pbbindings.go || true
 	@rm gno.pb.go || true
diff --git a/go.mod b/go.mod
index ec694143fae..e756cd8bd48 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/btcsuite/btcd v0.20.1-beta
 	github.com/btcsuite/btcutil v1.0.2
 	github.com/davecgh/go-spew v1.1.1
+	github.com/dgraph-io/badger/v3 v3.2103.2
 	github.com/fortytw2/leaktest v1.3.0
 	github.com/gdamore/tcell/v2 v2.1.0
 	github.com/gnolang/cors v1.8.1
@@ -18,6 +19,7 @@ require (
 	github.com/jaekwon/testify v1.6.1
 	github.com/jmhodges/levigo v1.0.0
 	github.com/libp2p/go-buffer-pool v0.0.2
+	github.com/linxGnu/grocksdb v1.7.2
 	github.com/mattn/go-runewidth v0.0.10
 	github.com/pelletier/go-toml v1.9.3
 	github.com/stretchr/testify v1.7.1
@@ -34,23 +36,34 @@ require (
 )
 
 require (
+	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
+	github.com/dgraph-io/ristretto v0.1.0 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c // indirect
 	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
 	github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect
 	github.com/gdamore/encoding v1.0.0 // indirect
-	github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
+	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
+	github.com/golang/snappy v0.0.3 // indirect
+	github.com/google/flatbuffers v1.12.1 // indirect
 	github.com/gorilla/securecookie v1.1.1 // indirect
 	github.com/gorilla/sessions v1.2.1 // indirect
+	github.com/klauspost/compress v1.12.3 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.1.0 // indirect
+	go.opencensus.io v0.22.5 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect
 	golang.org/x/text v0.3.6 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	gopkg.in/yaml.v2 v2.2.2 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	gopkg.in/yaml.v2 v2.2.4 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20220512140231-539c8e751b99 // indirect
 )
 
 replace github.com/gdamore/tcell/v2 => github.com/gnolang/tcell/v2 v2.1.0
diff --git a/go.sum b/go.sum
index cbfb684e6c8..6a5bceb0308 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,9 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
@@ -10,11 +15,28 @@ github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVa
 github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
 github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
+github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
+github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgraph-io/badger/v3 v3.2103.2 h1:dpyM5eCJAtQCBcMCZcT4UBZchuTJgCywerHHgmxfxM8=
+github.com/dgraph-io/badger/v3 v3.2103.2/go.mod h1:RHo4/GmYcKKh5Lxu63wLEMHJ70Pac2JqZRYGhlyAo2M=
+github.com/dgraph-io/ristretto v0.1.0 h1:Jv3CGQHp9OjuMBSne1485aDpUkTKEcUqF+jm/LuerPI=
+github.com/dgraph-io/ristretto v0.1.0/go.mod h1:fux0lOrBhrVCJd3lcTHsIJhq1T2rokOu6v9Vcb3Q9ug=
+github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 h1:tdlZCpZ/P9DhczCTSixgIKmwPv6+wP5DGjqLYw5SUiA=
+github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
+github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
+github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c h1:8ISkoahWXwZR41ois5lSJBSVw4D0OV19Ht/JSTzvSv0=
 github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c/go.mod h1:Yg+htXGokKKdzcwhuNDwVvN+uBxDGXJ7G/VN1d8fa64=
 github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojtoVVWjGfOF9635RETekkoH6Cc9SX0A=
@@ -32,11 +54,24 @@ github.com/gnolang/overflow v0.0.0-20170615021017-4d914c927216 h1:GKvsK3oLWG9B1G
 github.com/gnolang/overflow v0.0.0-20170615021017-4d914c927216/go.mod h1:xJhtEL7ahjM1WJipt89gel8tHzfIl/LyMY+lCYh38d8=
 github.com/gnolang/tcell/v2 v2.1.0 h1:gUYsnrQP+bPYTamkKTSkBuOc86MW2+YW+8E+kjZSf+8=
 github.com/gnolang/tcell/v2 v2.1.0/go.mod h1:vSVL/GV5mCSlPC6thFP5kfOFdM9MGZcalipmpTxTgQA=
+github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
+github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
+github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.5.0 h1:LUVKkCeviFUMKqHa4tXIIij/lbhnMbP7Fn5wKdKkRh4=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/golang/snappy v0.0.3 h1:fHPg5GQYlCeLIPB9BZqMVR5nR9A+IM5zcgeTdjMYmLA=
+github.com/golang/snappy v0.0.3/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/google/flatbuffers v1.12.1 h1:MVlul7pQNoDzWRLTw5imwYsl+usrS1TXG2H4jg6ImGw=
+github.com/google/flatbuffers v1.12.1/go.mod h1:1AeVuKshWv4vARoZatz6mlQ0JxURH0Kv5+zNeJKJCa8=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0 h1:A8PeW59pxE9IoFRqBp37U+mSNaQoZ46F1f0f863XSXw=
@@ -52,15 +87,22 @@ github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0U
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gotuna/gotuna v0.6.0 h1:N1lQKXEi/lwRp8u3sccTYLhzOffA4QasExz/1M5Riws=
 github.com/gotuna/gotuna v0.6.0/go.mod h1:F/ecRt29ChB6Ycy1AFIBpBiMNK0j7Heq+gFbLWquhjc=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jaekwon/testify v1.6.1 h1:4AtAJcR9GzXN5W4DdY7ie74iCPiJV1JJUJL90t2ZUyw=
 github.com/jaekwon/testify v1.6.1/go.mod h1:Oun0RXIHI7osufabQ60i4Lqkj0GXLbqI1I7kgzBNm1U=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmhodges/levigo v1.0.0 h1:q5EC36kV79HWeTBWsod3mG11EgStG3qArTKcvlksN1U=
 github.com/jmhodges/levigo v1.0.0/go.mod h1:Q6Qx+uH3RAqyK4rFQroq9RL7mdkABMcfhEI+nNuzMJQ=
 github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
+github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
+github.com/klauspost/compress v1.12.3 h1:G5AfA94pHPysR56qqrkO2pxEexdDzrpFJ6yt/VqWxVU=
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@@ -69,25 +111,44 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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@@ -96,39 +157,63 @@ github.com/syndtr/goleveldb v1.0.0 h1:fBdIW9lB4Iz0n9khmH8w27SJ3QEJ7+IgjPEwGSZiFd
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@@ -140,7 +225,12 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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+golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0 h1:po9/4sTYwZU9lPhi1tOrb4hCv3qrhiQ77LZfGa2OjwY=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -148,10 +238,17 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
@@ -159,8 +256,11 @@ gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMy
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20220512140231-539c8e751b99 h1:dbuHpmKjkDzSOMKAWl10QNlgaZUd3V1q99xc81tt2Kc=
+gopkg.in/yaml.v3 v3.0.0-20220512140231-539c8e751b99/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/misc/devdeps/README.md b/misc/devdeps/README.md
new file mode 100644
index 00000000000..bed6a80e797
--- /dev/null
+++ b/misc/devdeps/README.md
@@ -0,0 +1 @@
+This folder contains configuration of various development dependencies.
diff --git a/misc/devdeps/deps.go b/misc/devdeps/deps.go
new file mode 100644
index 00000000000..f1c792d32af
--- /dev/null
+++ b/misc/devdeps/deps.go
@@ -0,0 +1,11 @@
+//go:build tools
+// +build tools
+
+package gno
+
+// this file is used to allow "go mod" to be aware of some development dependencies.
+
+import (
+	// required by Makefile for flappy tests
+	_ "moul.io/testman"
+)
diff --git a/misc/devdeps/go.mod b/misc/devdeps/go.mod
new file mode 100644
index 00000000000..090a2baa69f
--- /dev/null
+++ b/misc/devdeps/go.mod
@@ -0,0 +1,12 @@
+module github.com/gnolang/gno/misc/devops
+
+go 1.18
+
+require moul.io/testman v1.5.0
+
+require (
+	github.com/peterbourgon/ff/v3 v3.0.0 // indirect
+	moul.io/banner v1.0.1 // indirect
+	moul.io/motd v1.0.0 // indirect
+	moul.io/u v1.6.0 // indirect
+)
diff --git a/misc/devdeps/go.sum b/misc/devdeps/go.sum
new file mode 100644
index 00000000000..fab6104a27c
--- /dev/null
+++ b/misc/devdeps/go.sum
@@ -0,0 +1,52 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
+github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
+github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/pelletier/go-toml v1.6.0/go.mod h1:5N711Q9dKgbdkxHL+MEfF31hpT7l0S0s/t2kKREewys=
+github.com/peterbourgon/ff/v3 v3.0.0 h1:eQzEmNahuOjQXfuegsKQTSTDbf4dNvr/eNLrmJhiH7M=
+github.com/peterbourgon/ff/v3 v3.0.0/go.mod h1:UILIFjRH5a/ar8TjXYLTkIvSvekZqPm5Eb/qbGk6CT0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+go.uber.org/goleak v1.1.10 h1:z+mqJhf6ss6BSfSM671tgKyZBFPTTJM+HLxnhPC3wu0=
+go.uber.org/goleak v1.1.10/go.mod h1:8a7PlsEVH3e/a/GLqe5IIrQx6GzcnRmZEufDUTk4A7A=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
+golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20191108193012-7d206e10da11 h1:Yq9t9jnGoR+dBuitxdo9l6Q7xh/zOyNnYUtDKaQ3x0E=
+golang.org/x/tools v0.0.0-20191108193012-7d206e10da11/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+moul.io/banner v1.0.1 h1:+WsemGLhj2pOajw2eR5VYjLhOIqs0XhIRYchzTyMLk0=
+moul.io/banner v1.0.1/go.mod h1:XwvIGKkhKRKyN1vIdmR5oaKQLIkMhkMqrsHpS94QzAU=
+moul.io/godev v1.7.0 h1:PgnL7BsCQPPjKwu9V0oxIVm2MyZAHAN2sl0S3+E37U0=
+moul.io/godev v1.7.0/go.mod h1:5lgSpI1oH7xWpLl2Ew/Nsgk8DiNM6FzN9WV9+lgW8RQ=
+moul.io/motd v1.0.0 h1:Trk4fPibDfPJf2iCBSQC8ws7Q02sMwivQdVEFAjCPto=
+moul.io/motd v1.0.0/go.mod h1:39rvZ0lC2oRhHDY2VoPyZ8r70VKqeJye3QAxjeLDJso=
+moul.io/testman v1.5.0 h1:tN1XEzLxYh8ZYy1wET6leWufnTl7BcZELkSNiro/yEo=
+moul.io/testman v1.5.0/go.mod h1:b4/5+lMsMDJtwuh25Cr0eVJ5Y4B2lSPfkzDtfct070g=
+moul.io/u v1.6.0 h1:hZwwppk8LZJMGb12ggEAMPfE27MWzhEVgFxgHxwtfMg=
+moul.io/u v1.6.0/go.mod h1:yd3/IoYRIJaZWAJV2rYHvM2EPp/Pp0zSNraB5IPX+hw=
diff --git a/pkgs/bft/blockchain/reactor_test.go b/pkgs/bft/blockchain/reactor_test.go
index d660db0c0c4..6eaaa8e3aee 100644
--- a/pkgs/bft/blockchain/reactor_test.go
+++ b/pkgs/bft/blockchain/reactor_test.go
@@ -20,6 +20,7 @@ import (
 	"github.com/gnolang/gno/pkgs/errors"
 	"github.com/gnolang/gno/pkgs/log"
 	"github.com/gnolang/gno/pkgs/p2p"
+	"github.com/gnolang/gno/pkgs/testutils"
 )
 
 var config *cfg.Config
@@ -173,7 +174,9 @@ func TestNoBlockResponse(t *testing.T) {
 // or without significant refactoring of the module.
 // Alternatively we could actually dial a TCP conn but
 // that seems extreme.
-func TestBadBlockStopsPeer(t *testing.T) {
+func TestFlappyBadBlockStopsPeer(t *testing.T) {
+	testutils.FilterStability(t, testutils.Flappy)
+
 	config = cfg.ResetTestRoot("blockchain_reactor_test")
 	defer os.RemoveAll(config.RootDir)
 	genDoc, privVals := randGenesisDoc(1, false, 30)
diff --git a/pkgs/bft/consensus/replay_test.go b/pkgs/bft/consensus/replay_test.go
index b609e586d30..287737e38e2 100644
--- a/pkgs/bft/consensus/replay_test.go
+++ b/pkgs/bft/consensus/replay_test.go
@@ -32,6 +32,7 @@ import (
 	"github.com/gnolang/gno/pkgs/events"
 	"github.com/gnolang/gno/pkgs/log"
 	"github.com/gnolang/gno/pkgs/random"
+	"github.com/gnolang/gno/pkgs/testutils"
 )
 
 func TestMain(m *testing.M) {
@@ -534,7 +535,9 @@ func TestHandshakeReplayOne(t *testing.T) {
 }
 
 // Sync from caught up
-func TestHandshakeReplayNone(t *testing.T) {
+func TestFlappyHandshakeReplayNone(t *testing.T) {
+	testutils.FilterStability(t, testutils.Flappy)
+
 	for _, m := range modes {
 		testHandshakeReplay(t, config, numBlocks, m, nil)
 	}
diff --git a/pkgs/bft/mempool/reactor_test.go b/pkgs/bft/mempool/reactor_test.go
index b96691f4bd8..a82c824a6ad 100644
--- a/pkgs/bft/mempool/reactor_test.go
+++ b/pkgs/bft/mempool/reactor_test.go
@@ -19,6 +19,7 @@ import (
 	"github.com/gnolang/gno/pkgs/p2p"
 	p2pcfg "github.com/gnolang/gno/pkgs/p2p/config"
 	"github.com/gnolang/gno/pkgs/p2p/mock"
+	"github.com/gnolang/gno/pkgs/testutils"
 )
 
 type peerState struct {
@@ -195,7 +196,9 @@ func TestBroadcastTxForPeerStopsWhenPeerStops(t *testing.T) {
 	leaktest.CheckTimeout(t, 10*time.Second)()
 }
 
-func TestBroadcastTxForPeerStopsWhenReactorStops(t *testing.T) {
+func TestFlappyBroadcastTxForPeerStopsWhenReactorStops(t *testing.T) {
+	testutils.FilterStability(t, testutils.Flappy)
+
 	if testing.Short() {
 		t.Skip("skipping test in short mode.")
 	}
diff --git a/pkgs/p2p/transport_test.go b/pkgs/p2p/transport_test.go
index 8978a30ced1..17ed5202e90 100644
--- a/pkgs/p2p/transport_test.go
+++ b/pkgs/p2p/transport_test.go
@@ -11,6 +11,7 @@ import (
 	"github.com/gnolang/gno/pkgs/amino"
 	"github.com/gnolang/gno/pkgs/crypto/ed25519"
 	"github.com/gnolang/gno/pkgs/p2p/conn"
+	"github.com/gnolang/gno/pkgs/testutils"
 )
 
 var defaultNodeName = "host_peer"
@@ -210,7 +211,9 @@ func testDialer(dialAddr NetAddress, errc chan error) {
 	errc <- nil
 }
 
-func TestTransportMultiplexAcceptNonBlocking(t *testing.T) {
+func TestFlappyTransportMultiplexAcceptNonBlocking(t *testing.T) {
+	testutils.FilterStability(t, testutils.Flappy)
+
 	mt := testSetupMultiplexTransport(t)
 
 	var (
diff --git a/pkgs/testutils/flappy.go b/pkgs/testutils/flappy.go
new file mode 100644
index 00000000000..b32fe3b9ba0
--- /dev/null
+++ b/pkgs/testutils/flappy.go
@@ -0,0 +1,24 @@
+package testutils
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+type StabilityMode string
+
+const (
+	Stable StabilityMode = "stable"
+	Flappy StabilityMode = "flappy"
+	Broken StabilityMode = "broken"
+)
+
+func FilterStability(t *testing.T, mode StabilityMode) {
+	t.Helper()
+
+	filter := os.Getenv("STABILITY_FILTER")
+	if filter != string(mode) {
+		t.Skip(fmt.Sprintf("skip test with %q stability", mode))
+	}
+}
diff --git a/tests/files/file.go b/tests/files/file.go
deleted file mode 100644
index e69de29bb2d..00000000000