fix test TF infra, add TF manager for testing

testing/testing_test.go

@@ -0,0 +1,35 @@
+package testing
+
+import (
+	"strconv"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestTestTerraformer(t *testing.T) {
+	require := require.New(t)
+
+	tf, err := NewTestTerraformer("testdata")
+	require.NoError(err)
+	require.NotNil(tf)
+	require.Nil(tf.state)
+
+	err = tf.Deploy()
+	require.NoError(err)
+	require.NotNil(tf.state)
+
+	data, err := tf.GetOutput("random_id_decimal")
+	require.NoError(err)
+	dataStr, ok := data.(string)
+	require.True(ok)
+	require.True(strings.HasPrefix(dataStr, "test-foo"))
+	dataInt, err := strconv.Atoi(strings.TrimPrefix(dataStr, "test-foo"))
+	require.NoError(err)
+	require.NotZero(dataInt)
+
+	err = tf.Destroy()
+	require.NoError(err)
+	require.Nil(tf.state)
+}