✨ scdiff: Limit generating results to specific checks (#3535)

* accept checks arg when generating golden.

Signed-off-by: Spencer Schrock <sschrock@google.com>

* dont shadow import

Signed-off-by: Spencer Schrock <sschrock@google.com>

---------

Signed-off-by: Spencer Schrock <sschrock@google.com>

cmd/internal/scdiff/app/generate.go

@@ -19,6 +19,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 
 	"github.com/spf13/cobra"
 
@@ -32,11 +33,13 @@ func init() {
 	rootCmd.AddCommand(generateCmd)
 	generateCmd.PersistentFlags().StringVarP(&repoFile, "repos", "r", "", "path to newline-delimited repo file")
 	generateCmd.PersistentFlags().StringVarP(&outputFile, "output", "o", "", "write to file instead of stdout")
+	generateCmd.PersistentFlags().StringVar(&checksArg, "checks", "", "Comma separated list of checks to run")
 }
 
 var (
 	repoFile   string
 	outputFile string
+	checksArg  string
 
 	generateCmd = &cobra.Command{
 		Use:   "generate [flags] repofile",
@@ -57,7 +60,8 @@ var (
 				defer outputF.Close()
 				output = outputF
 			}
-			r := runner.New()
+			checks := strings.Split(checksArg, ",")
+			r := runner.New(checks)
 			return generate(&r, input, output)
 		},
 	}

cmd/internal/scdiff/app/runner/runner.go

@@ -16,6 +16,7 @@ package runner
 
 import (
 	"context"
+	"strings"
 
 	"github.com/ossf/scorecard/v4/checker"
 	"github.com/ossf/scorecard/v4/checks"
@@ -42,7 +43,8 @@ type Runner struct {
 	vuln          clients.VulnerabilitiesClient
 }
 
-func New() Runner {
+// Creates a Runner which will run the listed checks. If no checks are provided, all will run.
+func New(enabledChecks []string) Runner {
 	ctx := context.Background()
 	logger := log.NewLogger(log.DefaultLevel)
 	return Runner{
@@ -52,7 +54,7 @@ func New() Runner {
 		ossFuzz:       ossfuzz.CreateOSSFuzzClient(ossfuzz.StatusURL),
 		cii:           clients.DefaultCIIBestPracticesClient(),
 		vuln:          clients.DefaultVulnerabilitiesClient(),
-		enabledChecks: checks.GetAll(),
+		enabledChecks: parseChecks(enabledChecks),
 	}
 }
 
@@ -73,3 +75,20 @@ func (r *Runner) log(msg string) {
 		r.logger.Info(msg)
 	}
 }
+
+func parseChecks(c []string) checker.CheckNameToFnMap {
+	all := checks.GetAll()
+	if len(c) == 0 {
+		return all
+	}
+
+	ret := checker.CheckNameToFnMap{}
+	for _, requested := range c {
+		for key, fn := range all {
+			if strings.EqualFold(key, requested) {
+				ret[key] = fn
+			}
+		}
+	}
+	return ret
+}

cmd/internal/scdiff/app/runner/runner_test.go

@@ -25,10 +25,15 @@ import (
 )
 
 func TestNew(t *testing.T) {
-	r := New()
+	r := New(nil)
 	if len(r.enabledChecks) == 0 {
 		t.Errorf("runner has no checks to run: %v", r.enabledChecks)
 	}
+	requestedChecks := []string{"Code-Review"}
+	r = New(requestedChecks)
+	if len(r.enabledChecks) != len(requestedChecks) {
+		t.Errorf("requested %d checks but only got: %v", len(requestedChecks), r.enabledChecks)
+	}
 }
 
 func TestRunner_Run(t *testing.T) {