fix #52: define go mod first, dep as fallback

go.mod

@@ -4,9 +4,10 @@ go 1.11
 
 require (
 	github.com/izumin5210/gex v0.6.0
+	github.com/spf13/afero v1.1.2
 	github.com/spf13/cobra v0.0.5
 	github.com/stretchr/testify v1.4.0
 	go.octolab.org/toolkit/cli v0.0.6
 )
 
-replace github.com/izumin5210/gex => github.com/kamilsk/gex v0.6.0-e3
+replace github.com/izumin5210/gex => github.com/kamilsk/gex v0.6.0-e4

go.sum

@@ -19,8 +19,8 @@ github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NH
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/izumin5210/execx v0.1.0 h1:QLtjHrG2nZmb/kvJ8/fXAlGcp+ECAfsWha+Yx2R6Czs=
 github.com/izumin5210/execx v0.1.0/go.mod h1:qrIQVE0XTXWXoNpeA+OWZgAjpBxiztOKHfHpPIzc5t0=
-github.com/kamilsk/gex v0.6.0-e3 h1:lcTpIATU75B9D4YuwlYJFyZpchmncr5uxbG/ubVlRg0=
-github.com/kamilsk/gex v0.6.0-e3/go.mod h1:nDH4zt3QvsIJipyYDoedHcNrNzawwkseKfpqGTUDN2Q=
+github.com/kamilsk/gex v0.6.0-e4 h1:76L0Z7DUgrhiqfFZiIEbjU1mH7/AInv7R3AeggsZJOY=
+github.com/kamilsk/gex v0.6.0-e4/go.mod h1:nDH4zt3QvsIJipyYDoedHcNrNzawwkseKfpqGTUDN2Q=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=

internal/cmd/tools/add_test.go

@@ -0,0 +1,38 @@
+package tools
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/izumin5210/gex"
+	"github.com/spf13/afero"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestAddCommand_GoModWithDep(t *testing.T) {
+	var (
+		issue    = "testdata/issue-52/tools"
+		expected = "tools.golden"
+		obtained = "tools.go"
+	)
+	golden, err := os.Stat(filepath.Join(issue, expected))
+	require.NoError(t, err)
+
+	buf, cfg := new(bytes.Buffer), &(*gex.Default)
+	cfg.FS = afero.NewMemMapFs()
+	cfg.ErrWriter = buf
+	cfg.OutWriter = buf
+	cfg.RootDir = issue
+	cfg.WorkingDir = issue
+	cmd := NewAddCommand(cfg)
+	cmd.SetOut(buf)
+
+	assert.NoError(t, cmd.RunE(cmd, []string{"golang.org/x/vgo"}))
+
+	manifest, err := cfg.FS.Stat(filepath.Join(issue, obtained))
+	assert.NoError(t, err)
+	assert.Equal(t, golden.Size(), manifest.Size())
+}

internal/cmd/tools/testdata/issue-52/Gopkg.toml

@@ -0,0 +1,30 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[prune]
+  go-tests = true
+  unused-packages = true

internal/cmd/tools/testdata/issue-52/go.mod

@@ -0,0 +1,3 @@
+module github.com/kamilsk/egg/test/issue-52
+
+go 1.11

internal/cmd/tools/testdata/issue-52/tools/go.mod

@@ -0,0 +1,3 @@
+module github.com/kamilsk/egg/test/issue-52/tools
+
+go 1.11

internal/cmd/tools/testdata/issue-52/tools/tools.golden

@@ -0,0 +1,11 @@
+// Code generated by github.com/kamilsk/egg. DO NOT EDIT.
+
+// +build tools
+
+package tools
+
+import (
+	_ "golang.org/x/vgo"
+)
+
+//go:generate go install golang.org/x/vgo