Improve tests

Author: l7ssha

test/audio_channel_layout_test.dart

@@ -16,5 +16,24 @@ void main() {
       expect(layout, isNotNull);
       expect('Surround 7.1.4', layout!.toStringWithPrefix());
     });
+
+    test("Invalid/edge inputs return null", () {
+      expect(AudioChannelLayout.parse(null), isNull);
+      expect(AudioChannelLayout.parse(''), isNull);
+      expect(AudioChannelLayout.parse('  '), isNull);
+      expect(AudioChannelLayout.parse('abc'), isNull);
+      expect(AudioChannelLayout.parse('2.'), isNull);
+      expect(AudioChannelLayout.parse('.1'), isNull);
+    });
+
+    test("toString without aux channel prints 'main.sub'", () {
+      final layout = AudioChannelLayout.parse('2.1')!;
+      expect(layout.toString(), '2.1');
+    });
+
+    test("Prefix boundary: 3.x => Stereo, 4.x => Surround", () {
+      expect(AudioChannelLayout.parse('3.0')!.toStringWithPrefix(), 'Stereo 3.0');
+      expect(AudioChannelLayout.parse('4.0')!.toStringWithPrefix(), 'Surround 4.0');
+    });
   });
 }

test/pipelines_test.dart

@@ -0,0 +1,19 @@
+import 'package:running_on_dart/src/util/pipelines.dart';
+import 'package:test/test.dart';
+
+void main() {
+  group('pipelines helpers', () {
+    test('getEmbedTitle returns "Task i of n"', () {
+      expect(getEmbedTitle(1, 3), 'Task 1 of 3');
+      expect(getEmbedTitle(3, 3), 'Task 3 of 3');
+    });
+
+    test('getInitialEmbed initializes title/description/author', () {
+      final embed = getInitialEmbed(2, 'Build');
+
+      expect(embed.title, 'Task 1 of 2');
+      expect(embed.description, 'Starting...');
+      expect(embed.author?.name, 'Pipeline Build');
+    });
+  });
+}

test/query_builder_test.dart

@@ -45,6 +45,15 @@ void main() {
 
         expect(buf.toStringClean(), 'SELECT * FROM t;');
       });
+      test("toStringClean collapses multiple spaces across query (no tabs/newlines)", () {
+        final buf = StringBuffer('SELECT   a   FROM    t   WHERE   x =  1   ;');
+        expect(buf.toStringClean(), 'SELECT a FROM t WHERE x = 1;');
+      });
+
+      test("toStringClean keeps single spaces between tokens and removes space before semicolon", () {
+        final buf = StringBuffer('INSERT  INTO  t  (a,b)  VALUES  (1,2)  ;');
+        expect(buf.toStringClean(), 'INSERT INTO t (a,b) VALUES (1,2);');
+      });
     });
 
     group("RawQuery", () {

test/utils_test.dart

@@ -166,4 +166,26 @@ void main() {
       expect(result, {'a': '1', 'b': '2', 'c': null});
     });
   });
+
+  group("Additional utils edge cases", () {
+    test('spliceEmbedsForMessageBuilders with empty list yields no messages', () {
+      final result = spliceEmbedsForMessageBuilders(const <EmbedBuilder>[]).toList();
+      expect(result, isEmpty);
+    });
+
+    test('getDurationFromStringOrDefault invalid string returns default', () {
+      expect(
+        getDurationFromStringOrDefault('not a duration', const Duration(seconds: 5)),
+        const Duration(seconds: 5),
+      );
+    });
+
+    test('valueOrNull returns original non-empty string (not trimmed)', () {
+      expect(valueOrNull(' value '), ' value ');
+    });
+
+    test('generateRandomString supports zero length', () {
+      expect(generateRandomString(0), '');
+    });
+  });
 }