diff --git a/Library/Homebrew/test/os/mac/java_requirement_spec.rb b/Library/Homebrew/test/os/mac/java_requirement_spec.rb
new file mode 100644
index 0000000000..f6404db926
--- /dev/null
+++ b/Library/Homebrew/test/os/mac/java_requirement_spec.rb
@@ -0,0 +1,34 @@
+require "requirements/java_requirement"
+require "fileutils"
+
+describe JavaRequirement do
+  subject { described_class.new(%w[1.8]) }
+  let(:java_home) { Dir.mktmpdir }
+  let(:java_home_path) { Pathname.new(java_home) }
+
+  before(:each) do
+    FileUtils.mkdir java_home_path/"bin"
+    FileUtils.touch java_home_path/"bin/java"
+    allow(subject).to receive(:preferred_java).and_return(java_home_path/"bin/java")
+    expect(subject).to be_satisfied
+  end
+
+  after(:each) { java_home_path.rmtree }
+
+  specify "Apple Java environment" do
+    expect(ENV).to receive(:prepend_path)
+    expect(ENV).to receive(:append_to_cflags)
+
+    subject.modify_build_environment
+    expect(ENV["JAVA_HOME"]).to eq(java_home)
+  end
+
+  specify "Oracle Java environment" do
+    FileUtils.mkdir java_home_path/"include"
+    expect(ENV).to receive(:prepend_path)
+    expect(ENV).to receive(:append_to_cflags).twice
+
+    subject.modify_build_environment
+    expect(ENV["JAVA_HOME"]).to eq(java_home)
+  end
+end
diff --git a/Library/Homebrew/test/os/mac/java_requirement_test.rb b/Library/Homebrew/test/os/mac/java_requirement_test.rb
deleted file mode 100644
index 83c1af95ca..0000000000
--- a/Library/Homebrew/test/os/mac/java_requirement_test.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-require "testing_env"
-require "requirements/java_requirement"
-require "fileutils"
-
-class OSMacJavaRequirementTests < Homebrew::TestCase
-  def setup
-    super
-    @java_req = JavaRequirement.new(%w[1.8])
-    @tmp_java_home = mktmpdir
-    @tmp_pathname = Pathname.new(@tmp_java_home)
-    FileUtils.mkdir @tmp_pathname/"bin"
-    FileUtils.touch @tmp_pathname/"bin/java"
-    @java_req.stubs(:preferred_java).returns(@tmp_pathname/"bin/java")
-    @java_req.satisfied?
-  end
-
-  def test_java_env_apple
-    ENV.expects(:prepend_path)
-    ENV.expects(:append_to_cflags)
-    @java_req.modify_build_environment
-    assert_equal ENV["JAVA_HOME"], @tmp_java_home
-  end
-
-  def test_java_env_oracle
-    FileUtils.mkdir @tmp_pathname/"include"
-    ENV.expects(:prepend_path)
-    ENV.expects(:append_to_cflags).twice
-    @java_req.modify_build_environment
-    assert_equal ENV["JAVA_HOME"], @tmp_java_home
-  end
-end