environs: add NewEnviron(kind, config)

environs/open_test.go

Index: environs/open_test.go
=== added file 'environs/open_test.go'
--- environs/open_test.go	1970-01-01 00:00:00 +0000
+++ environs/open_test.go	2012-05-15 07:28:38 +0000
@@ -0,0 +1,28 @@
+package environs_test
+
+import (
+	. "launchpad.net/gocheck"
+	"launchpad.net/juju/go/environs"
+	_ "launchpad.net/juju/go/environs/dummy"
+)
+
+type OpenSuite struct{}
+
+var _ = Suite(&OpenSuite{})
+
+func (OpenSuite) TestNewDummyEnviron(c *C) {
+	// matches *ConfigNode.Map()
+	config := map[string]interface{}{
+		"type":      "dummy",
+		"zookeeper": false,
+	}
+	env, err := environs.NewEnviron("dummy", config)
+	c.Assert(err, IsNil)
+	c.Assert(env.Bootstrap(), IsNil)
+}
+
+func (OpenSuite) TestNewUnknownEnviron(c *C) {
+	env, err := environs.NewEnviron("wondercloud", nil)
+	c.Assert(err, ErrorMatches, "no registered provider for kind:.*")
+	c.Assert(env, IsNil)
+}