✅ add test and data

go.sum

@@ -8,13 +8,15 @@ golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974 h1:IX6qOQeG5uLjB/hjjwjedwfjND0hgjPMMyO1RoIXQNI=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=

nrseg_test.go

@@ -0,0 +1,95 @@
+package nrseg
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestNrseg_run(t *testing.T) {
+	type fields struct {
+		path      string
+		outStream io.Writer
+		errStream io.Writer
+	}
+	tests := [...]struct {
+		name   string
+		want   string
+		fields fields
+	}{
+		{
+			name: "basic",
+			want: "./testdata/want",
+			fields: fields{
+				path:      "./testdata/input",
+				outStream: os.Stdout,
+				errStream: os.Stderr,
+			},
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			dist := os.TempDir()
+			n := &nrseg{
+				in:        tt.fields.path,
+				dist:      dist,
+				outStream: tt.fields.outStream,
+				errStream: tt.fields.errStream,
+			}
+			if err := n.run(); err != nil {
+				t.Fatalf("run() error = %v", err)
+			}
+			// validate(t, dist, tt.want)
+			validate(t, n.in, tt.want)
+		})
+	}
+}
+
+func validate(t *testing.T, gotpath, wantpath string) {
+	filepath.Walk(gotpath, func(path string, info os.FileInfo, err error) error {
+		if info.IsDir() {
+			return nil
+		}
+		if filepath.Ext(path) != ".go" {
+			return nil
+		}
+		rel, err := filepath.Rel(gotpath, path)
+		if err != nil {
+			t.Errorf("fileapth.Rel(): not want error at %q: %v", path, err)
+			return err
+		}
+		wfp := filepath.Join(wantpath, rel)
+		wf, err := os.Open(wfp)
+		if err != nil {
+			t.Errorf("cannot open the wanted file %q: %v", path, err)
+			return err
+		}
+		defer wf.Close()
+		want, err := ioutil.ReadAll(wf)
+		if err != nil {
+			t.Errorf("cannot read the wanted file %q: %v", path, err)
+			return err
+		}
+
+		gf, err := os.Open(path)
+		if err != nil {
+			t.Errorf("cannot read the got file %q: %v", path, err)
+			return err
+		}
+		got, err := ioutil.ReadAll(gf)
+		if err != nil {
+			t.Errorf("cannot read the got file %q: %v", path, err)
+			return err
+		}
+		if diff := cmp.Diff(got, want); len(diff) != 0 {
+			t.Errorf("%q -got +want %v", path, diff)
+		}
+
+		return nil
+	})
+}

testdata/input/basic.go

@@ -0,0 +1,23 @@
+package input
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+)
+
+type S struct{}
+
+func (s *S) SampleMethod(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleFunc(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleHandler(w http.ResponseWriter, req *http.Request) {
+	fmt.Fprintf(w, "Hello, %q", req.URL.Path)
+}

testdata/input/go.mod

@@ -0,0 +1,3 @@
+module github.com/budougumi0617/nrseg/testdata/input
+
+go 1.15

testdata/input/testdata/must_not_change.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+)
+
+type MustNotChange struct{}
+
+func (m *MustNotChange) SampleMethod(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleFunc(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleHandler(w http.ResponseWriter, req *http.Request) {
+	fmt.Fprintf(w, "Hello, %q", req.URL.Path)
+}

testdata/want/basic.go

@@ -0,0 +1,28 @@
+package input
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	"github.com/newrelic/go-agent/v3/newrelic"
+)
+
+type S struct{}
+
+func (s *S) SampleMethod(ctx context.Context) {
+	defer newrelic.FromContext(ctx).StartSegment("sample_method").End()
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleFunc(ctx context.Context) {
+	defer newrelic.FromContext(ctx).StartSegment("sample_func").End()
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleHandler(w http.ResponseWriter, req *http.Request) {
+	defer newrelic.FromContext(req.Context()).StartSegment("sample_handler").End()
+	fmt.Fprintf(w, "Hello, %q", req.URL.Path)
+}

testdata/want/go.mod

@@ -0,0 +1,5 @@
+module github.com/budougumi0617/nrseg/testdata/want
+
+go 1.15
+
+require github.com/newrelic/go-agent/v3 v3.9.0 // indirect

testdata/want/go.sum

@@ -0,0 +1,52 @@
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testdata/want/testdata/must_not_change.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+)
+
+type MustNotChange struct{}
+
+func (m *MustNotChange) SampleMethod(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleFunc(ctx context.Context) {
+	fmt.Println("Hello, playground")
+	fmt.Println("end function")
+}
+
+func SampleHandler(w http.ResponseWriter, req *http.Request) {
+	fmt.Fprintf(w, "Hello, %q", req.URL.Path)
+}