Adding package:smoke. This CL includes the intial APIs, a mirror-based

pkg/smoke/test/args_test.dart

+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/// Tests for [minArgs] and [maxArgs].
+library smoke.test.args_test;
+
+import 'package:smoke/smoke.dart' show minArgs, maxArgs, SUPPORTED_ARGS;
+import 'package:unittest/unittest.dart';
+
+main() {
+  var a = new A();
+  var instanceMethods = [ a.m1, a.m2, a.m3, a.m4, a.m5, a.m6, a.m7, a.m8, a.m9,
+      a.m10, a.m11, a.m12, a.m13, a.m14, a.m15, a.m16, a.m17, a.m18, a.m19,
+      a.m20, a.m21];
+  group('instance methods', () => checkMethods(instanceMethods));
+  group('static methods', () => checkMethods(staticMethods));
+  group('closures', () => checkMethods(closures));
+  group('top level methods', () => checkMethods(topLevelMethods));
+}
+
+checkMethods(List methods) {
+  test('min args', () {
+    expect(methods.map((m) => minArgs(m)), expectedMin);
+  });
+
+  test('max args', () {
+    expect(methods.map((m) => maxArgs(m)), expectedMax);
+  });
+}
+
+class A {
+  // required args only
+  static s1() {}
+  static s2(p1) {}
+  static s3(p1, p2) {}
+  static s4(p1, p2, p3) {}
+  static s5(p1, p2, p3, p4) {}
+  static s6(p1, p2, p3, p4, p5) {}
+
+  // optional args only
+  static s7([o1]) {}
+  static s8([o1, o2]) {}
+  static s9([o1, o2, o3]) {}
+  static s10([o1, o2, o3, o4]) {}
+  static s11([o1, o2, o3, o4, o5]) {}
+
+  // 1 required, some optional
+  static s12(p1, [o2]) {}
+  static s13(p1, [o2, o3]) {}
+  static s14(p1, [o2, o3, o4]) {}
+  static s15(p1, [o2, o3, o4, o5]) {}
+
+  // 2 required, some optional
+  static s16(p1, p2, [o3]) {}
+  static s17(p1, p2, [o3, o4]) {}
+  static s18(p1, p2, [o3, o4, o5]) {}
+
+  // 3 required, some optional
+  static s19(p1, p2, p3, [o4]) {}
+  static s20(p1, p2, p3, [o4, o5]) {}
+
+  // 4 required, some optional
+  static s21(p1, p2, p3, p4, [o5]) {}
+
+  m1() {}
+  m2(p1) {}
+  m3(p1, p2) {}
+  m4(p1, p2, p3) {}
+  m5(p1, p2, p3, p4) {}
+  m6(p1, p2, p3, p4, p5) {}
+  m7([o1]) {}
+  m8([o1, o2]) {}
+  m9([o1, o2, o3]) {}
+  m10([o1, o2, o3, o4]) {}
+  m11([o1, o2, o3, o4, o5]) {}
+  m12(p1, [o2]) {}
+  m13(p1, [o2, o3]) {}
+  m14(p1, [o2, o3, o4]) {}
+  m15(p1, [o2, o3, o4, o5]) {}
+  m16(p1, p2, [o3]) {}
+  m17(p1, p2, [o3, o4]) {}
+  m18(p1, p2, [o3, o4, o5]) {}
+  m19(p1, p2, p3, [o4]) {}
+  m20(p1, p2, p3, [o4, o5]) {}
+  m21(p1, p2, p3, p4, [o5]) {}
+}
+
+t1() {}
+t2(p1) {}
+t3(p1, p2) {}
+t4(p1, p2, p3) {}
+t5(p1, p2, p3, p4) {}
+t6(p1, p2, p3, p4, p5) {}
+t7([o1]) {}
+t8([o1, o2]) {}
+t9([o1, o2, o3]) {}
+t10([o1, o2, o3, o4]) {}
+t11([o1, o2, o3, o4, o5]) {}
+t12(p1, [o2]) {}
+t13(p1, [o2, o3]) {}
+t14(p1, [o2, o3, o4]) {}
+t15(p1, [o2, o3, o4, o5]) {}
+t16(p1, p2, [o3]) {}
+t17(p1, p2, [o3, o4]) {}
+t18(p1, p2, [o3, o4, o5]) {}
+t19(p1, p2, p3, [o4]) {}
+t20(p1, p2, p3, [o4, o5]) {}
+t21(p1, p2, p3, p4, [o5]) {}
+
+List closures = [
+  () {},
+  (p1) {},
+  (p1, p2) {},
+  (p1, p2, p3) {},
+  (p1, p2, p3, p4) {},
+  (p1, p2, p3, p4, p5) {},
+  ([o1]) {},
+  ([o1, o2]) {},
+  ([o1, o2, o3]) {},
+  ([o1, o2, o3, o4]) {},
+  ([o1, o2, o3, o4, o5]) {},
+  (p1, [o2]) {},
+  (p1, [o2, o3]) {},
+  (p1, [o2, o3, o4]) {},
+  (p1, [o2, o3, o4, o5]) {},
+  (p1, p2, [o3]) {},
+  (p1, p2, [o3, o4]) {},
+  (p1, p2, [o3, o4, o5]) {},
+  (p1, p2, p3, [o4]) {},
+  (p1, p2, p3, [o4, o5]) {},
+  (p1, p2, p3, p4, [o5]) {},
+];
+
+List staticMethods = [ A.s1, A.s2, A.s3, A.s4, A.s5, A.s6, A.s7, A.s8, A.s9,
+     A.s10, A.s11, A.s12, A.s13, A.s14, A.s15, A.s16, A.s17, A.s18, A.s19,
+     A.s20, A.s21];
+
+List topLevelMethods = [ t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, t11, t12,
+    t13, t14, t15, t16, t17, t18, t19, t20, t21];
+
+const MIN_NOT_KNOWN = SUPPORTED_ARGS + 1;
+List expectedMin = const [
+  0, 1, 2, 3, MIN_NOT_KNOWN, MIN_NOT_KNOWN, // required only
+  0, 0, 0, 0, 0, // optional only
+  1, 1, 1, 1, // 1 required
+  2, 2, 2, // 2 required
+  3, 3, // 3 required
+  MIN_NOT_KNOWN // 4 required
+];
+
+const MAX_NOT_KNOWN = -1;
+List expectedMax = const [
+  0, 1, 2, 3, MAX_NOT_KNOWN, MAX_NOT_KNOWN, // required only
+  1, 2, 3, 3, 3, // optional only
+  2, 3, 3, 3, // 1 required
+  3, 3, 3, // 2 required
+  3, 3, // 3 required
+  MAX_NOT_KNOWN // 4 required
+];