Check committed Go formatting

validation_test.go

@@ -12,10 +12,10 @@ func TestCandidateRequestMapsGoValidation(t *testing.T) {
 		Validation: ValidationSpec{Go: GoValidationSpec{
 			Race: true, FullVet: true,
 			CompileTargets: []Target{{OS: "linux", Arch: "amd64"}, {OS: "darwin", Arch: "arm64"}},
-		}},
+		}, GoFormat: true},
 	})
-	if !request.Validation.Race || !request.Validation.FullVet {
-		t.Fatalf("candidate request validation = %#v, want race and full vet enabled", request.Validation)
+	if !request.Validation.Race || !request.Validation.FullVet || !request.Validation.GoFormat {
+		t.Fatalf("candidate request validation = %#v, want race, full vet, and formatting enabled", request.Validation)
 	}
 	want := []validation.Target{{OS: "linux", Arch: "amd64"}, {OS: "darwin", Arch: "arm64"}}
 	if len(request.Validation.CompileTargets) != len(want) {
@@ -39,3 +39,25 @@ func TestValidationErrorPreservesGoVetIdentity(t *testing.T) {
 		t.Fatalf("converted error = %v, want cause preserved", got)
 	}
 }
+
+func TestValidationErrorPreservesGoFormatIdentityAndFindings(t *testing.T) {
+	cause := errors.New("format parser failed")
+	got := convertValidationError(&validation.Failure{
+		Check: validation.GoFormat,
+		Findings: []validation.Finding{{
+			Path:    "vendor/example/bad.go",
+			Message: "committed Go source cannot be formatted",
+		}},
+		Cause: cause,
+	})
+	var validationError *ValidationError
+	if !errors.As(got, &validationError) || validationError.Check != "go-format" {
+		t.Fatalf("converted error = %#v, want go-format validation identity", got)
+	}
+	if len(validationError.Findings) != 1 || validationError.Findings[0].Path != "vendor/example/bad.go" {
+		t.Fatalf("converted findings = %#v, want vendor path", validationError.Findings)
+	}
+	if !errors.Is(got, cause) {
+		t.Fatalf("converted error = %v, want parser cause preserved", got)
+	}
+}