multi: context.Background() -> t.Context()

Use the new feature of Go 1.24, fix linter warnings.

This change was produced by:
 - running golangci-lint run --fix
 - sed 's/context.Background/t.Context/' -i `git grep -l context.Background | grep test.go`
 - manually fixing broken tests
 - itest, lntest: use ht.Context() where ht or hn is available
 - in HarnessNode.Stop() we keep using context.Background(), because it is
   called from a cleanup handler in which t.Context() is canceled already.

sqldb/migrations_test.go

@@ -1,7 +1,6 @@
 package sqldb
 
 import (
-	"context"
 	"database/sql"
 	"fmt"
 	"path/filepath"
@@ -75,7 +74,7 @@ func TestMigrations(t *testing.T) {
 // 2592000 seconds for AMP invoices.
 func testInvoiceExpiryMigration(t *testing.T, makeDB makeMigrationTestDB) {
 	t.Parallel()
-	ctxb := context.Background()
+	ctxb := t.Context()
 
 	// Create a new database that already has the first version of the
 	// native invoice schema.
@@ -276,7 +275,7 @@ func TestCustomMigration(t *testing.T) {
 		},
 	}
 
-	ctxb := context.Background()
+	ctxb := t.Context()
 	for _, test := range tests {
 		// checkSchemaVersion checks the database schema version against
 		// the expected version.
@@ -391,7 +390,7 @@ func TestCustomMigration(t *testing.T) {
 				"migrations", dbName)
 
 			_, err := fixture.db.ExecContext(
-				context.Background(), "CREATE DATABASE "+dbName,
+				t.Context(), "CREATE DATABASE "+dbName,
 			)
 			require.NoError(t, err)
 
@@ -490,7 +489,7 @@ func TestSchemaMigrationIdempotency(t *testing.T) {
 				)
 			})
 
-			ctxb := context.Background()
+			ctxb := t.Context()
 			require.NoError(
 				t, db.ApplyAllMigrations(ctxb, GetMigrations()),
 			)
@@ -536,7 +535,7 @@ func TestSchemaMigrationIdempotency(t *testing.T) {
 			"migrations", dbName)
 
 		_, err := fixture.db.ExecContext(
-			context.Background(), "CREATE DATABASE "+dbName,
+			t.Context(), "CREATE DATABASE "+dbName,
 		)
 		require.NoError(t, err)
 
@@ -550,7 +549,7 @@ func TestSchemaMigrationIdempotency(t *testing.T) {
 			db, err = NewPostgresStore(cfg)
 			require.NoError(t, err)
 
-			ctxb := context.Background()
+			ctxb := t.Context()
 			require.NoError(
 				t, db.ApplyAllMigrations(ctxb, GetMigrations()),
 			)
@@ -601,7 +600,7 @@ func TestMigrationSucceedsAfterDirtyStateMigrationFailure19RC1(t *testing.T) {
 		failingSchemaVersion        = 3
 	)
 
-	ctxb := context.Background()
+	ctxb := t.Context()
 	migrations := GetMigrations()
 	migrations = migrations[:maxSchemaVersionBefore19RC1]
 	lastMigration := migrations[len(migrations)-1]
@@ -692,7 +691,7 @@ func TestMigrationSucceedsAfterDirtyStateMigrationFailure19RC1(t *testing.T) {
 			"migrations", dbName)
 
 		_, err := fixture.db.ExecContext(
-			context.Background(), "CREATE DATABASE "+dbName,
+			t.Context(), "CREATE DATABASE "+dbName,
 		)
 		require.NoError(t, err)
 

sqldb/paginate_test.go

@@ -18,7 +18,7 @@ import (
 func TestExecuteBatchQuery(t *testing.T) {
 	t.Parallel()
 
-	ctx := context.Background()
+	ctx := t.Context()
 
 	t.Run("empty input returns nil", func(t *testing.T) {
 		var (
@@ -245,7 +245,7 @@ func TestExecuteBatchQuery(t *testing.T) {
 // executing the query in pages.
 func TestSQLSliceQueries(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	db := NewTestDB(t)
 
@@ -327,7 +327,7 @@ func TestSQLSliceQueries(t *testing.T) {
 // page until all items are processed or an error occurs.
 func TestExecutePaginatedQuery(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	type testItem struct {
 		id   int64
@@ -944,7 +944,7 @@ func TestExecuteCollectAndBatchWithSharedDataQuery(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			ctx := context.Background()
+			ctx := t.Context()
 			cfg := &QueryConfig{
 				MaxPageSize: tt.maxPageSize,
 			}