Fix some tests and things

spec/dependencies/crystal_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :crystal
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'crystal', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'crystal', match: latest
     end
   end

spec/dependencies/golang_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :golang
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'golang', version: version, cmd: 'go version', match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'golang', cmd: 'go version', match: latest
     end
   end

spec/dependencies/memcached_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :memcached
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'memcached', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'memcached', match: latest
     end
   end

spec/dependencies/mysql_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :mysql
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'mysql', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'mysql', match: latest
     end
   end

spec/dependencies/node_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :node
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'node', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'node', match: latest
     end
   end

spec/dependencies/postgres_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :postgresql
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'postgresql', cmd: 'psql --version', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'postgresql', cmd: 'psql --version', match: latest
     end
   end

spec/dependencies/redis_spec.rb

@@ -3,12 +3,12 @@
     versions, latest = versions_for :redis
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
+      it "installs v#{version} correctly" do
         test_dep 'redis', cmd: 'redis-cli --version', version: version, match: version
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'redis', cmd: 'redis-cli --version', match: latest
     end
   end

spec/dependencies/ruby_spec.rb

@@ -3,12 +3,43 @@
     versions, latest = versions_for :ruby
 
     versions.each do |version|
-      it "installs version #{version} correctly" do
-        test_dep 'ruby', version: version, match: version
+      describe "v#{version}" do
+        around(:each) do |example|
+          with_payload(deps: {'ruby' => version}) do |root|
+            @root = root
+            loon %w(up)
+
+            assert_stderr_empty
+            assert_status 0
+            example.run
+          end
+        end
+
+        it "installs correctly" do
+          loon %w(exec ruby --version)
+          assert_stdout version
+        end
+
+        it "sets the gem environment up" do
+          loon %w(exec env)
+          assert_stdout "GEM_HOME=#{@root}/.loon/data/gem"
+          assert_stdout "GEM_PATH=#{@root}/.loon/data/gem"
+          assert_stdout %r(PATH=.*#{@root}/.loon/data/gem/bin)
+        end
+
+        it "installs gems in the right location" do
+          loon %w(exec gem install rake)
+          assert_path "#{@root}/.loon/data/gem/bin/rake"
+        end
+
+        it "installs bundler" do
+          assert_path "#{@root}/.loon/data/gem/bin/bundle"
+          assert_path "#{@root}/.loon/data/gem/bin/bundler"
+        end
       end
     end
 
-    it "installs version #{latest} as the default" do
+    it "installs v#{latest} as the default" do
       test_dep 'ruby', match: latest
     end
   end

spec/spec_helper.rb

@@ -41,7 +41,12 @@ def assert_stderr_empty
   end
 
   def assert_stdout(str)
-    expect(@last_stdout).to include(str)
+    case str
+    when String then expect(@last_stdout).to include(str)
+    when Regexp then expect(@last_stdout).to match(str)
+    else raise "Not sure how to deal with #{str.class}"
+    end
+
   end
 
   def assert_finalizer(type, content = nil)
@@ -50,7 +55,7 @@ def assert_finalizer(type, content = nil)
   end
 
   def assert_path(path)
-    expect(Dir.exist?(path)).to be_truthy
+    expect(File.exist?(path)).to be_truthy
   end
 end
 
@@ -66,13 +71,15 @@ def test_dep(name, version: nil, cmd: nil, match:)
             name
           end
 
-    with_payload(deps: dep) do |project|
-      loon %w(up), dir: project
-      loon ['exec', cmd], dir: project
+    with_payload(deps: dep) do
+      loon %w(up)
+      loon ['exec', cmd]
 
       assert_stderr_empty
       assert_stdout match
       assert_status 0
+    ensure
+      loon %(down)
     end
   end
 
@@ -90,7 +97,10 @@ def with_payload(name: "Test", url: "Test", deps: [], tasks: {})
       File.open(File.join(tmpdir, 'loon.yml'), 'w') do |f|
         f.write(yml)
       end
+      @project_dir = tmpdir
       yield tmpdir
+    ensure
+      @project_dir = nil
     end
   end
 
@@ -151,7 +161,7 @@ def loon(*args)
     script.write <<~SH
       __integration_test() {
         exec 9>"#{finalizer.path}"
-        cd #{opts[:dir] || Dir.pwd}
+        cd #{opts[:dir] || @project_dir || Dir.pwd}
         #{cmd}
         ret=$?
         exec 9<&-