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feat(testutil): adding DefaultContextWithKeys test helper (backport #17216) #17217

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merged 2 commits into from
Jul 31, 2023
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feat(testutil): adding DefaultContextWithKeys test helper (backport #17216) #17217

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f16bd2c
feat(testutil): adding DefaultContextWithKeys test helper (#17216)
damiannolan Jul 31, 2023
49b0181
add changelog
julienrbrt Jul 31, 2023
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -44,6 +44,7 @@ Ref: https://keepachangelog.com/en/1.0.0/

### Improvements

* (testutil) [#17216](https://github.com/cosmos/cosmos-sdk/issues/17216) Add `DefaultContextWithKeys` to `testutil` package.
* (x/group, x/gov) [#17109](https://github.com/cosmos/cosmos-sdk/pull/17109) Let proposal summary be 40x longer than metadata limit.
* (version) [#17096](https://github.com/cosmos/cosmos-sdk/pull/17096) Improve `getSDKVersion()` to handle module replacements.

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30 changes: 30 additions & 0 deletions testutil/context.go
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Expand Up @@ -31,6 +31,36 @@ func DefaultContext(key, tkey storetypes.StoreKey) sdk.Context {
return ctx
}

// DefaultContextWithKeys creates a sdk.Context with a fresh MemDB, mounting the providing keys for usage in the multistore.
// This function is intended to be used for testing purposes only.
func DefaultContextWithKeys(
keys map[string]*storetypes.KVStoreKey,
transKeys map[string]*storetypes.TransientStoreKey,
memKeys map[string]*storetypes.MemoryStoreKey,
) sdk.Context {
db := dbm.NewMemDB()
cms := store.NewCommitMultiStore(db, log.NewNopLogger(), metrics.NewNoOpMetrics())

for _, key := range keys {
cms.MountStoreWithDB(key, storetypes.StoreTypeIAVL, db)
}

for _, tKey := range transKeys {
cms.MountStoreWithDB(tKey, storetypes.StoreTypeTransient, db)
}

for _, memkey := range memKeys {
cms.MountStoreWithDB(memkey, storetypes.StoreTypeMemory, db)
}

err := cms.LoadLatestVersion()
if err != nil {
panic(err)
}

return sdk.NewContext(cms, cmtproto.Header{}, false, log.NewNopLogger())
}

type TestContext struct {
Ctx sdk.Context
DB *dbm.MemDB
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