import "package:test/test.dart";
import "package:clawd_code/src/utils/string_utils.dart";


void main() {
  group("escapeRegExp", () {
    test("escapes dot and star", () {
      expect(escapeRegExp("a.b*c"), equals(r"a\.b\*c"));
    });

    test("plain string unchanged", () {
      expect(escapeRegExp("hello"), equals("hello"));
    });
  });

  group("capitalize", () {
    test("uppercases first char", () {
      expect(capitalize("foo"), equals("Foo"));
    });

    test("empty string stays empty", () {
      expect(capitalize(""), equals(""));
    });

    test("doesnt lowercase rest", () {
      expect(capitalize("fOOBAR"), equals("FOOBAR"));
    });
  });

  group("plural", () {
    test("singular for 1", () {
      expect(plural(1, "file"), equals("file"));
    });

    test("appends s for other counts", () {
      expect(plural(3, "file"), equals("files"));
    });

    test("uses custom plural form", () {
      expect(plural(2, "entry", "entries"), equals("entries"));
    });
  });

  group("firstLineOf", () {
    test("returns full string when no newline", () {
      expect(firstLineOf("hello world"), equals("hello world"));
    });

    test("returns only first line", () {
      expect(firstLineOf("line1\nline2\nline3"), equals("line1"));
    });
  });

  group("countChar", () {
    test("counts occurrences", () {
      expect(countChar("banana", "a"), equals(3));
    });

    test("zero when not found", () {
      expect(countChar("hello", "z"), equals(0));
    });
  });

  group("truncate", () {
    test("short string unchanged", () {
      expect(truncate("hi", 10), equals("hi"));
    });

    test("truncates long string with ellipsis", () {
      final result = truncate("hello world", 8);
      expect(result.length, lessThanOrEqualTo(8));
      expect(result.endsWith("..."), isTrue);
    });
  });
}