Add test for skipped entries

kachick · kachick · commit de37453e003c · 2026-02-09T20:46:19.000+09:00
diff --git a/internal/runner/no_change_test.go b/internal/runner/no_change_test.go
@@ -0,0 +1,53 @@
+package runner
+
+import (
+	"regexp"
+	"strings"
+	"testing"
+)
+
+func TestDryRun_NoChanges(t *testing.T) {
+	prefix := regexp.MustCompile(`\s*[#;/]* selfup `)
+
+	t.Run("Empty input", func(t *testing.T) {
+		input := ``
+		result, err := DryRun(strings.NewReader(input), prefix, "")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if result.ChangedCount != 0 {
+			t.Errorf("expected 0 changes for empty input, got %d", result.ChangedCount)
+		}
+		if result.Total != 0 {
+			t.Errorf("expected 0 total definitions, got %d", result.Total)
+		}
+	})
+
+	t.Run("No selfup definitions", func(t *testing.T) {
+		input := "line1\nline2"
+		result, err := DryRun(strings.NewReader(input), prefix, "")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if result.ChangedCount != 0 {
+			t.Errorf("expected 0 changes, got %d", result.ChangedCount)
+		}
+		if result.Total != 0 {
+			t.Errorf("expected 0 total definitions, got %d", result.Total)
+		}
+	})
+
+	t.Run("Selfup definition exists but no change needed", func(t *testing.T) {
+		input := `tool: 1.0 # selfup { "extract": "[0-9.]+", "replacer": ["echo", "1.0"] }`
+		result, err := DryRun(strings.NewReader(input), prefix, "")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if result.ChangedCount != 0 {
+			t.Errorf("expected 0 changes, got %d", result.ChangedCount)
+		}
+		if result.Total != 1 {
+			t.Errorf("expected 1 total definition, got %d", result.Total)
+		}
+	})
+}
