Revel tool enhancements

* run Command will choose CWD if no additional arguments are supplied
* Added Revel version check, compatible lists are in model/version

model/version_test.go

@@ -0,0 +1,33 @@
+package model_test
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+	"github.com/revel/cmd/model"
+)
+
+var versionTests = [][]string{
+	{"v0.20.0-dev", "v0.20.0-dev"},
+	{"v0.20-dev", "v0.20.0-dev"},
+	{"v0.20.", "v0.20.0"},
+	{"2.0", "2.0.0"},
+}
+// Test that the event handler can be attached and it dispatches the event received
+func TestVersion(t *testing.T) {
+	for _, v:= range versionTests {
+		p,e:=model.ParseVersion(v[0])
+		assert.Nil(t,e,"Should have parsed %s",v)
+		assert.Equal(t,p.String(),v[1], "Should be equal %s==%s",p.String(),v)
+	}
+}
+
+// test the ranges
+func TestVersionRange(t *testing.T) {
+	a,_ := model.ParseVersion("0.1.2")
+	b,_ := model.ParseVersion("0.2.1")
+	c,_ := model.ParseVersion("1.0.1")
+	assert.True(t, b.MinorNewer(a), "B is newer then A")
+	assert.False(t, b.MajorNewer(a), "B is not major newer then A")
+	assert.False(t, b.MajorNewer(c), "B is not major newer then A")
+	assert.True(t, c.MajorNewer(b), "C is major newer then b")
+}