Add support for --skip in envtool tests run (FerretDB#3805)

Closes FerretDB#3787.

Taskfile.yml

@@ -203,6 +203,7 @@ tasks:
         --shard-index={{.SHARD_INDEX}}
         --shard-total={{.SHARD_TOTAL}}
         --run='{{.TEST_RUN}}'
+        --skip='{{.TEST_SKIP}}'
         --
         -count=1
         -timeout={{.TEST_TIMEOUT}}
@@ -228,6 +229,7 @@ tasks:
         --shard-index={{.SHARD_INDEX}}
         --shard-total={{.SHARD_TOTAL}}
         --run='{{.TEST_RUN}}'
+        --skip='{{.TEST_SKIP}}'
         --
         -count=1
         -timeout={{.TEST_TIMEOUT}}
@@ -253,6 +255,7 @@ tasks:
         --shard-index={{.SHARD_INDEX}}
         --shard-total={{.SHARD_TOTAL}}
         --run='{{.TEST_RUN}}'
+        --skip='{{.TEST_SKIP}}'
         --
         -count=1
         -timeout={{.TEST_TIMEOUT}}
@@ -278,6 +281,7 @@ tasks:
         --shard-index={{.SHARD_INDEX}}
         --shard-total={{.SHARD_TOTAL}}
         --run='{{.TEST_RUN}}'
+        --skip='{{.TEST_SKIP}}'
         --
         -count=1
         -timeout={{.TEST_TIMEOUT}}
@@ -303,6 +307,7 @@ tasks:
         --shard-index={{.SHARD_INDEX}}
         --shard-total={{.SHARD_TOTAL}}
         --run='{{.TEST_RUN}}'
+        --skip='{{.TEST_SKIP}}'
         --
         -count=1
         -timeout={{.TEST_TIMEOUT}}

cmd/envtool/envtool.go

@@ -430,6 +430,7 @@ var cli struct {
 			ShardIndex uint   `help:"Shard index, starting from 1."`
 			ShardTotal uint   `help:"Total number of shards."`
 			Run        string `help:"Run only tests matching the regexp."`
+			Skip       string `help:"Skip tests matching the regexp."`
 
 			Args []string `arg:"" help:"Other arguments and flags for 'go test'." passthrough:""`
 		} `cmd:"" help:"Run tests."`
@@ -525,7 +526,7 @@ func main() {
 		err = testsRun(
 			ctx,
 			cli.Tests.Run.ShardIndex, cli.Tests.Run.ShardTotal,
-			cli.Tests.Run.Run, cli.Tests.Run.Args,
+			cli.Tests.Run.Run, cli.Tests.Run.Skip, cli.Tests.Run.Args,
 			logger,
 		)
 

cmd/envtool/tests.go

@@ -102,6 +102,7 @@ func runGoTest(ctx context.Context, args []string, total int, times bool, logger
 	}()
 
 	cmd := exec.CommandContext(ctx, "go", append([]string{"test", "-json"}, args...)...)
+
 	logger.Debugf("Running %s", strings.Join(cmd.Args, " "))
 
 	cmd.Stderr = os.Stderr
@@ -354,7 +355,7 @@ func runGoTest(ctx context.Context, args []string, total int, times bool, logger
 
 // testsRun runs tests specified by the shard index and total or by the run regex
 // using `go test` with given extra args.
-func testsRun(ctx context.Context, index, total uint, run string, args []string, logger *zap.SugaredLogger) error {
+func testsRun(ctx context.Context, index, total uint, run, skip string, args []string, logger *zap.SugaredLogger) error {
 	logger.Debugf("testsRun: index=%d, total=%d, run=%q, args=%q", index, total, run, args)
 
 	var totalTest int
@@ -386,7 +387,14 @@ func testsRun(ctx context.Context, index, total uint, run string, args []string,
 		run += ")$"
 	}
 
-	return runGoTest(ctx, append([]string{"-run=" + run}, args...), totalTest, true, logger)
+	if skip != "" {
+		totalTest = 0
+		args = append(args, "-run="+run, "-skip="+skip)
+	} else {
+		args = append(args, "-run="+run)
+	}
+
+	return runGoTest(ctx, args, totalTest, true, logger)
 }
 
 // listTestFuncs returns a sorted slice of all top-level test functions (tests, benchmarks, examples, fuzz functions)