feat(t208): close candidate decision feedback loop

backend-api/internal/usecase/candidate_human_review_test.go

@@ -0,0 +1,85 @@
+package usecase
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestValidateCandidateHumanReviewAcceptsStructuredSelection(t *testing.T) {
+	selected := 2
+	command := validCandidateHumanReviewCommand()
+	command.SelectedCandidateOrdinal = &selected
+	command.Items = []CandidateHumanReviewItemInput{
+		{
+			CandidateOrdinal:  1,
+			Label:             "REJECT",
+			PrimaryReasonCode: "NOT_BEST_MATCH",
+			ReasonCodes:       []string{"NOT_BEST_MATCH"},
+		},
+		{
+			CandidateOrdinal:  2,
+			Label:             "ACCEPT",
+			PrimaryReasonCode: "SKU_MATCH",
+			ReasonCodes:       []string{"SKU_MATCH", "IMAGE_MATCH"},
+		},
+	}
+
+	if err := validateCandidateHumanReview(command); err != nil {
+		t.Fatalf("validate structured selection: %v", err)
+	}
+}
+
+func TestValidateCandidateHumanReviewRejectsMissingSelectedItem(t *testing.T) {
+	selected := 2
+	command := validCandidateHumanReviewCommand()
+	command.SelectedCandidateOrdinal = &selected
+
+	if err := validateCandidateHumanReview(command); err == nil {
+		t.Fatal("expected missing selected item to be rejected")
+	}
+}
+
+func TestValidateCandidateHumanReviewRequiresOtherNote(t *testing.T) {
+	command := validCandidateHumanReviewCommand()
+	command.PrimaryReasonCode = "OTHER"
+	command.Note = "短"
+
+	if err := validateCandidateHumanReview(command); err == nil {
+		t.Fatal("expected short OTHER note to be rejected")
+	}
+	command.Note = "人工判断更合适"
+	if err := validateCandidateHumanReview(command); err != nil {
+		t.Fatalf("validate OTHER note: %v", err)
+	}
+}
+
+func TestValidateCandidateHumanReviewAllowsEmptyNoMatch(t *testing.T) {
+	command := validCandidateHumanReviewCommand()
+	command.Outcome = "NO_MATCH"
+	command.SelectedCandidateOrdinal = nil
+	command.PrimaryReasonCode = "NO_ACCEPTABLE_CANDIDATE"
+	command.Items = nil
+
+	if err := validateCandidateHumanReview(command); err != nil {
+		t.Fatalf("validate empty no-match review: %v", err)
+	}
+}
+
+func validCandidateHumanReviewCommand() StoreCandidateHumanReviewCommand {
+	selected := 1
+	return StoreCandidateHumanReviewCommand{
+		TaskContentSHA256:        strings.Repeat("a", 64),
+		ReasonSchemaVersion:      1,
+		Outcome:                  "CANDIDATE_ACCEPTED",
+		SelectedCandidateOrdinal: &selected,
+		PrimaryReasonCode:        "SELECTED_BEST_MATCH",
+		Items: []CandidateHumanReviewItemInput{
+			{
+				CandidateOrdinal:  1,
+				Label:             "ACCEPT",
+				PrimaryReasonCode: "SKU_MATCH",
+				ReasonCodes:       []string{"SKU_MATCH"},
+			},
+		},
+	}
+}