Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 28 insertions, 0 deletions

diff --git a/spec/mspec/spec/matchers/be_true_spec.rb b/spec/mspec/spec/matchers/be_true_spec.rb
new file mode 100644
index 0000000000..90c89b3911
--- /dev/null
+++ b/spec/mspec/spec/matchers/be_true_spec.rb
@@ -0,0 +1,28 @@
+require 'spec_helper'
+require 'mspec/expectations/expectations'
+require 'mspec/matchers'
+
+describe BeTrueMatcher do
+  it "matches when actual is true" do
+    BeTrueMatcher.new.matches?(true).should == true
+  end
+
+  it "does not match when actual is not true" do
+    BeTrueMatcher.new.matches?("").should == false
+    BeTrueMatcher.new.matches?(false).should == false
+    BeTrueMatcher.new.matches?(nil).should == false
+    BeTrueMatcher.new.matches?(0).should == false
+  end
+
+  it "provides a useful failure message" do
+    matcher = BeTrueMatcher.new
+    matcher.matches?("some string")
+    matcher.failure_message.should == ["Expected \"some string\"", "to be true"]
+  end
+
+  it "provides a useful negative failure message" do
+    matcher = BeTrueMatcher.new
+    matcher.matches?(true)
+    matcher.negative_failure_message.should == ["Expected true", "not to be true"]
+  end
+end