Update build dependency to >=v3 <5.0.0

example/config/coap_config.dart

@@ -7,6 +7,9 @@ import 'package:coap/coap.dart';
 /// the config file to contain only those entries that override the defaults.
 /// The file can't be empty, so version must as a minimum be present.
 class CoapConfig extends DefaultCoapConfig {
+  @override
+  int get version => 1;
+
   @override
   int get defaultPort => 5683;
 
@@ -52,6 +55,9 @@ class CoapConfig extends DefaultCoapConfig {
   @override
   int get notificationReregistrationBackoff => 2000;
 
+  @override
+  String get deduplicator => 'MarkAndSweep';
+
   @override
   int get cropRotationPeriod => 2000;
 
@@ -65,5 +71,8 @@ class CoapConfig extends DefaultCoapConfig {
   int get channelReceivePacketSize => 2048;
 
   @override
-  String get deduplicator => 'MarkAndSweep';
+  bool get dtlsVerify => false;
+
+  @override
+  bool get dtlsWithTrustedRoots => false;
 }

example/config/coap_config.yaml

@@ -3,6 +3,9 @@
 
 # Protocol section
 
+# Version of the config file (required).
+version: 1
+
 # The default CoAP port for normal CoAP communication (not secure).
 defaultPort: 5683
 

pubspec.yaml

@@ -11,7 +11,7 @@ environment:
   sdk: '>=3.7.0 <4.0.0'
 
 dependencies:
-  build: ^2.4.1
+  build: '>=3.0.0 <5.0.0'
   characters: ^1.4.0
   collection: ^1.18.0
   convert: ^3.1.1
@@ -25,7 +25,8 @@ dependencies:
   yaml: ^3.1.2
 
 dev_dependencies:
-  build_runner: ^2.4.12
+  build_runner: '>=2.4.12 <3.0.0'
+  build_test: ^3.5.0
   lints: ^5.1.0
   test: ^1.25.8
 

test/coap_builder_test.dart

@@ -0,0 +1,271 @@
+import 'dart:io';
+
+import 'package:build/build.dart';
+import 'package:build_test/build_test.dart';
+import 'package:coap/builder.dart';
+import 'package:test/test.dart';
+
+void main() {
+  final builder = configBuilder(const BuilderOptions({}));
+
+  group('configBuilder', () {
+    group('buildExtensions', () {
+      test('maps .yaml to .dart', () {
+        expect(builder.buildExtensions, equals({'.yaml': ['.dart']}));
+      });
+    });
+
+    group('generateClassName', () {
+      test('single word', () {
+        expect(generateClassName('coap_config.yaml'), 'CoapConfig');
+      });
+
+      test('multiple underscores', () {
+        expect(generateClassName('coap_config_all.yaml'), 'CoapConfigAll');
+      });
+
+      test('already capitalized segments', () {
+        expect(generateClassName('coap_config_default.yaml'), 'CoapConfigDefault');
+      });
+    });
+
+    group('build output', () {
+      test('generates Dart class from minimal config with version key', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              allOf(
+                contains("// GENERATED CODE, do not edit this file."),
+                contains("class CoapConfig extends DefaultCoapConfig {"),
+                contains("int get version => 1;"),
+              ),
+            ),
+          },
+        );
+      });
+
+      test('generates int getters', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+defaultPort: 5683
+maxRetransmit: 4
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              allOf(
+                contains('int get defaultPort => 5683;'),
+                contains('int get maxRetransmit => 4;'),
+              ),
+            ),
+          },
+        );
+      });
+
+      test('generates double getters', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+ackRandomFactor: 1.5
+ackTimeoutScale: 2.0
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              allOf(
+                contains('double get ackRandomFactor => 1.5;'),
+                contains('double get ackTimeoutScale => 2.0;'),
+              ),
+            ),
+          },
+        );
+      });
+
+      test('generates bool getters', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+useRandomIDStart: false
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              contains('bool get useRandomIDStart => false;'),
+            ),
+          },
+        );
+      });
+
+      test('generates string getters', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+deduplicator: "MarkAndSweep"
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              contains("String get deduplicator => 'MarkAndSweep';"),
+            ),
+          },
+        );
+      });
+
+      test('generates nested YAML keys with camelCase names', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+dtls:
+  verify: false
+  withTrustedRoots: true
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              allOf(
+                contains('bool get dtlsVerify => false;'),
+                contains('bool get dtlsWithTrustedRoots => true;'),
+              ),
+            ),
+          },
+        );
+      });
+
+      test('skips null values', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+dtls:
+  ciphers: null
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              isNot(contains('dtlsCiphers')),
+            ),
+          },
+        );
+      });
+
+      test('generates dtlsBackend getter with DtlsBackend prefix', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+dtlsBackend: openSsl
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              contains('DtlsBackend? get dtlsBackend => DtlsBackend.openSsl;'),
+            ),
+          },
+        );
+      });
+
+      test('non-matching filename is ignored and produces no output', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/other_config.yaml': '''
+version: 1
+defaultPort: 5683
+''',
+          },
+          outputs: {},
+        );
+      });
+
+      test('generates class name from multi-part filename', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config_custom.yaml': '''
+version: 1
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config_custom.dart': decodedMatches(
+              contains('class CoapConfigCustom extends DefaultCoapConfig {'),
+            ),
+          },
+        );
+      });
+
+      test('includes import of package:coap/coap.dart', () async {
+        await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+version: 1
+''',
+          },
+          outputs: {
+            'coap|lib/coap_config.dart': decodedMatches(
+              contains("import 'package:coap/coap.dart';"),
+            ),
+          },
+        );
+      });
+
+      test('throws when version key is missing', () async {
+        final result = await testBuilder(
+          builder,
+          {
+            'coap|lib/coap_config.yaml': '''
+defaultPort: 5683
+''',
+          },
+          outputs: {},
+        );
+        expect(result.succeeded, isFalse);
+        expect(
+          result.errors.any((e) => e.contains('version')),
+          isTrue,
+        );
+      });
+    });
+
+    group('example config', () {
+      test(
+        'example/config/coap_config.yaml generates example/config/coap_config.dart',
+        () async {
+          final yamlContent = await File(
+            'example/config/coap_config.yaml',
+          ).readAsString();
+          final dartContent = (await File(
+            'example/config/coap_config.dart',
+          ).readAsString()).replaceAll('\r\n', '\n');
+
+          await testBuilder(
+            builder,
+            {'coap|example/config/coap_config.yaml': yamlContent},
+            outputs: {
+              'coap|example/config/coap_config.dart': dartContent,
+            },
+          );
+        },
+      );
+    });
+  });
+}