Fixed missing test file

.gitignore

@@ -1,4 +1,4 @@
 .envrc
 .gobuild
-ko
+/ko
 

lang/ko/cmd/test.go

@@ -0,0 +1,54 @@
+//
+// Copyright © 2018 Aljabr, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package cmd
+
+import (
+	"log"
+
+	"github.com/spf13/cobra"
+
+	"github.com/kocircuit/kocircuit/lang/go/eval"
+	"github.com/kocircuit/kocircuit/lang/go/runtime"
+	"github.com/kocircuit/kocircuit/lang/go/sys"
+)
+
+// testCmd represents the test command
+var testCmd = &cobra.Command{
+	Use:   "test",
+	Short: "Execute all Test functions of a Ko program",
+	Long:  `Play compiles a Ko program and then executes all Test functions.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		tools := newToolchain()
+		if len(args) < 1 {
+			log.Fatalf("ko test expects aat least one argument in the form \"path/to/pkg\"")
+		}
+		b := &sys.CompileTest{
+			Repo:    tools.PkgRoots(),
+			Pkgs:    args,
+			Faculty: eval.EvalFaculty(),
+			Show:    false, // show compiled ko functions
+		}
+		if result := b.Play(runtime.CompilerContext()); result.Error != nil {
+			log.Fatalln(result.Error)
+		}
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(testCmd)
+	initGoBasedCmd(testCmd)
+}