1 files changed, 46 insertions, 0 deletions
diff --git a/spec/mspec/spec/matchers/be_close_spec.rb b/spec/mspec/spec/matchers/be_close_spec.rb
new file mode 100644
index 0000000000..3ced61dc7a
--- /dev/null
+++ b/spec/mspec/spec/matchers/be_close_spec.rb
@@ -0,0 +1,46 @@
+require 'spec_helper'
+require 'mspec/expectations/expectations'
+require 'mspec/matchers'
+
+# Adapted from RSpec 1.0.8
+describe BeCloseMatcher do
+  it "matches when actual == expected" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(5.0).should == true
+  end
+
+  it "matches when actual < (expected + tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(5.49).should == true
+  end
+
+  it "matches when actual > (expected - tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(4.51).should == true
+  end
+
+  it "does not match when actual == (expected + tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(5.5).should == false
+  end
+
+  it "does not match when actual == (expected - tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(4.5).should == false
+  end
+
+  it "does not match when actual < (expected - tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(4.49).should == false
+  end
+
+  it "does not match when actual > (expected + tolerance)" do
+    BeCloseMatcher.new(5.0, 0.5).matches?(5.51).should == false
+  end
+
+  it "provides a useful failure message" do
+    matcher = BeCloseMatcher.new(5.0, 0.5)
+    matcher.matches?(5.5)
+    matcher.failure_message.should == ["Expected 5.0", "to be within +/- 0.5 of 5.5"]
+  end
+
+  it "provides a useful negative failure message" do
+    matcher = BeCloseMatcher.new(5.0, 0.5)
+    matcher.matches?(5.0)
+    matcher.negative_failure_message.should == ["Expected 5.0", "not to be within +/- 0.5 of 5.0"]
+  end
+end