cli: unify canceltx command output

Always return "Target transaction accepted" error if the target transation was
either accepted by the moment of command run or during the command
handling. Exit with code 1 in both cases. Adjust TestAwaitUtilCancelTx
correspondingly, allow both cases in test. Simplify the test along the
way, remove useless code.

Close #3365.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>

cli/util/cancel.go

@@ -52,7 +52,7 @@ func cancelTx(ctx *cli.Context) error {
 
 	mainTx, _ := c.GetRawTransactionVerbose(txHash)
 	if mainTx != nil && !mainTx.Blockhash.Equals(util.Uint256{}) {
-		return cli.NewExitError(fmt.Errorf("transaction %s is already accepted at block %s", txHash, mainTx.Blockhash.StringLE()), 1)
+		return cli.NewExitError(fmt.Errorf("target transaction %s is accepted at block %s", txHash, mainTx.Blockhash.StringLE()), 1)
 	}
 
 	if mainTx != nil && !mainTx.HasSigner(acc.ScriptHash()) {
@@ -76,10 +76,7 @@ func cancelTx(ctx *cli.Context) error {
 	if err != nil {
 		return cli.NewExitError(fmt.Errorf("failed to send conflicting transaction: %w", err), 1)
 	}
-	var (
-		acceptedH = resHash
-		res       *state.AppExecResult
-	)
+	var res *state.AppExecResult
 	if ctx.Bool("await") {
 		res, err = a.WaitAny(gctx, resVub, txHash, resHash)
 		if err != nil {
@@ -93,12 +90,14 @@ func cancelTx(ctx *cli.Context) error {
 			return cli.NewExitError(fmt.Errorf("failed to await target/ conflicting transaction %s/ %s: %w", txHash.StringLE(), resHash.StringLE(), err), 1)
 		}
 		if txHash.Equals(res.Container) {
-			fmt.Fprintln(ctx.App.Writer, "Target transaction accepted")
-			acceptedH = txHash
-		} else {
-			fmt.Fprintln(ctx.App.Writer, "Conflicting transaction accepted")
+			tx, err := c.GetRawTransactionVerbose(txHash)
+			if err != nil {
+				return cli.NewExitError(fmt.Errorf("target transaction %s is accepted", txHash), 1)
+			}
+			return cli.NewExitError(fmt.Errorf("target transaction %s is accepted at block %s", txHash, tx.Blockhash.StringLE()), 1)
 		}
+		fmt.Fprintln(ctx.App.Writer, "Conflicting transaction accepted")
 	}
-	txctx.DumpTransactionInfo(ctx.App.Writer, acceptedH, res)
+	txctx.DumpTransactionInfo(ctx.App.Writer, resHash, res)
 	return nil
 }

cli/util/util_test.go

@@ -1,9 +1,9 @@
 package util_test
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
-	"strings"
 	"testing"
 	"time"
 
@@ -168,24 +168,13 @@ func TestAwaitUtilCancelTx(t *testing.T) {
 	_, ok := e.Chain.GetMemPool().TryGetValue(txHash)
 	require.True(t, ok)
 
+	// Allow both cases: either target or conflicting tx acceptance.
 	e.In.WriteString("one\r")
-	e.Run(t, append(args, txHash.StringLE())...)
-
-	response := e.GetNextLine(t)
-	if strings.Contains(response, "Conflicting transaction accepted") {
+	err = e.RunOrError(t, fmt.Sprintf("target transaction %s is accepted", txHash), append(args, txHash.StringLE())...)
+	if err == nil {
+		response := e.GetNextLine(t)
+		require.Equal(t, "Conflicting transaction accepted", response)
 		resHash, _ := e.CheckAwaitableTxPersisted(t)
-		require.Eventually(t, func() bool {
-			_, aerErr := e.Chain.GetAppExecResults(resHash.Hash(), trigger.Application)
-			return aerErr == nil
-		}, time.Second*2, time.Millisecond*50)
-	} else if strings.Contains(response, "Target transaction accepted") {
-		require.Eventually(t, func() bool {
-			_, _, err := e.Chain.GetTransaction(txHash)
-			require.NoError(t, err, "original transaction should be on chain")
-			_, aerErr := e.Chain.GetAppExecResults(txHash, trigger.Application)
-			return aerErr == nil
-		}, time.Second*2, time.Millisecond*50)
-	} else {
-		t.Fatalf("unexpected response: %s", response)
+		require.NotEqual(t, resHash, txHash)
 	}
 }

internal/testcli/executor.go

@@ -286,6 +286,20 @@ func (e *Executor) Run(t *testing.T, args ...string) {
 	require.NoError(t, e.run(args...))
 	checkExit(t, ch, 0)
 }
+
+// RunOrError runs command and checks that if there was an error, then its text matches the provided one.
+func (e *Executor) RunOrError(t *testing.T, errText string, args ...string) error {
+	ch := setExitFunc()
+	err := e.run(args...)
+	if err != nil {
+		require.True(t, strings.Contains(err.Error(), errText))
+		checkExit(t, ch, 1)
+	} else {
+		checkExit(t, ch, 0)
+	}
+	return err
+}
+
 func (e *Executor) run(args ...string) error {
 	e.Out.Reset()
 	e.Err.Reset()