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package e2e_test
import (
"context"
"os"
"path/filepath"
"sync"
"testing"
"github.com/stretchr/testify/require"
rpchttp "github.com/tendermint/tendermint/rpc/client/http"
rpctypes "github.com/tendermint/tendermint/rpc/core/types"
e2e "github.com/tendermint/tendermint/test/e2e/pkg"
"github.com/tendermint/tendermint/types"
)
func init() {
// This can be used to manually specify a testnet manifest and/or node to
// run tests against. The testnet must have been started by the runner first.
// os.Setenv("E2E_MANIFEST", "networks/ci.toml")
// os.Setenv("E2E_NODE", "validator01")
}
var (
ctx = context.Background()
testnetCache = map[string]e2e.Testnet{}
testnetCacheMtx = sync.Mutex{}
blocksCache = map[string][]*types.Block{}
blocksCacheMtx = sync.Mutex{}
)
// testNode runs tests for testnet nodes. The callback function is given a
// single node to test, running as a subtest in parallel with other subtests.
//
// The testnet manifest must be given as the envvar E2E_MANIFEST. If not set,
// these tests are skipped so that they're not picked up during normal unit
// test runs. If E2E_NODE is also set, only the specified node is tested,
// otherwise all nodes are tested.
func testNode(t *testing.T, testFunc func(*testing.T, e2e.Node)) {
t.Helper()
testnet := loadTestnet(t)
nodes := testnet.Nodes
if name := os.Getenv("E2E_NODE"); name != "" {
node := testnet.LookupNode(name)
require.NotNil(t, node, "node %q not found in testnet %q", name, testnet.Name)
nodes = []*e2e.Node{node}
}
for _, node := range nodes {
node := *node
t.Run(node.Name, func(t *testing.T) {
t.Parallel()
testFunc(t, node)
})
}
}
// loadTestnet loads the testnet based on the E2E_MANIFEST envvar.
func loadTestnet(t *testing.T) e2e.Testnet {
t.Helper()
manifest := os.Getenv("E2E_MANIFEST")
if manifest == "" {
t.Skip("E2E_MANIFEST not set, not an end-to-end test run")
}
if !filepath.IsAbs(manifest) {
manifest = filepath.Join("..", manifest)
}
testnetCacheMtx.Lock()
defer testnetCacheMtx.Unlock()
if testnet, ok := testnetCache[manifest]; ok {
return testnet
}
testnet, err := e2e.LoadTestnet(manifest)
require.NoError(t, err)
testnetCache[manifest] = *testnet
return *testnet
}
// fetchBlockChain fetches a complete, up-to-date block history from
// the freshest testnet archive node.
func fetchBlockChain(t *testing.T) []*types.Block {
t.Helper()
testnet := loadTestnet(t)
// Find the freshest archive node
var (
client *rpchttp.HTTP
status *rpctypes.ResultStatus
)
for _, node := range testnet.ArchiveNodes() {
c, err := node.Client()
require.NoError(t, err)
s, err := c.Status(ctx)
require.NoError(t, err)
if status == nil || s.SyncInfo.LatestBlockHeight > status.SyncInfo.LatestBlockHeight {
client = c
status = s
}
}
require.NotNil(t, client, "couldn't find an archive node")
// Fetch blocks. Look for existing block history in the block cache, and
// extend it with any new blocks that have been produced.
blocksCacheMtx.Lock()
defer blocksCacheMtx.Unlock()
from := status.SyncInfo.EarliestBlockHeight
to := status.SyncInfo.LatestBlockHeight
blocks, ok := blocksCache[testnet.Name]
if !ok {
blocks = make([]*types.Block, 0, to-from+1)
}
if len(blocks) > 0 {
from = blocks[len(blocks)-1].Height + 1
}
for h := from; h <= to; h++ {
resp, err := client.Block(ctx, &(h))
require.NoError(t, err)
require.NotNil(t, resp.Block)
require.Equal(t, h, resp.Block.Height, "unexpected block height %v", resp.Block.Height)
blocks = append(blocks, resp.Block)
}
require.NotEmpty(t, blocks, "blockchain does not contain any blocks")
blocksCache[testnet.Name] = blocks
return blocks
}