Add new tests for fails_with DSL

Library/Homebrew/test/test_fails_with.rb

@@ -0,0 +1,60 @@
+require 'testing_env'
+require 'test/testball'
+
+class FailsWithTests < Test::Unit::TestCase
+  class Double < Compiler
+    attr_accessor :name, :build
+  end
+
+  def assert_fails_with(cc)
+    assert @f.new.fails_with?(cc)
+  end
+
+  def assert_does_not_fail_with(cc)
+    assert !@f.new.fails_with?(cc)
+  end
+
+  def fails_with(*args, &block)
+    @f.send(:fails_with, *args, &block)
+  end
+
+  def build_cc(sym, build)
+    cc = Double.new
+    cc.name = sym
+    cc.build = build
+    cc
+  end
+
+  def setup
+    @f = Class.new(TestBall)
+  end
+
+  def test_fails_with_symbol
+    fails_with :clang
+    cc = build_cc(:clang, 425)
+    assert_fails_with cc
+  end
+
+  def test_fails_with_build
+    fails_with(:clang) { build 211 }
+    cc = build_cc(:clang, 318)
+    assert_does_not_fail_with cc
+  end
+
+  def test_fails_with_block_without_build
+    fails_with(:clang) { }
+    cc = build_cc(:clang, 425)
+    assert_fails_with cc
+  end
+
+  def test_multiple_failures
+    fails_with(:llvm)
+    fails_with(:clang)
+    gcc = build_cc(:gcc, 5666)
+    llvm = build_cc(:llvm, 2336)
+    clang = build_cc(:clang, 425)
+    assert_fails_with llvm
+    assert_fails_with clang
+    assert_does_not_fail_with gcc
+  end
+end