Merge pull request #3950 from bchadwic/browse-commit

Add feature open latest commit in gh browse

pkg/cmd/browse/browse.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/MakeNowJust/heredoc"
 	"github.com/cli/cli/v2/api"
+	"github.com/cli/cli/v2/git"
 	"github.com/cli/cli/v2/internal/ghrepo"
 	"github.com/cli/cli/v2/pkg/cmdutil"
 	"github.com/cli/cli/v2/pkg/iostreams"
@@ -28,6 +29,7 @@ type BrowseOptions struct {
 	SelectorArg string
 
 	Branch        string
+	CommitFlag    bool
 	ProjectsFlag  bool
 	SettingsFlag  bool
 	WikiFlag      bool
@@ -81,8 +83,9 @@ func NewCmdBrowse(f *cmdutil.Factory, runF func(*BrowseOptions) error) *cobra.Co
 			}
 
 			if err := cmdutil.MutuallyExclusive(
-				"specify only one of `--branch`, `--projects`, `--wiki`, or `--settings`",
+				"specify only one of `--branch`, `--commit`, `--projects`, `--wiki`, or `--settings`",
 				opts.Branch != "",
+				opts.CommitFlag,
 				opts.WikiFlag,
 				opts.SettingsFlag,
 				opts.ProjectsFlag,
@@ -102,6 +105,7 @@ func NewCmdBrowse(f *cmdutil.Factory, runF func(*BrowseOptions) error) *cobra.Co
 	cmd.Flags().BoolVarP(&opts.WikiFlag, "wiki", "w", false, "Open repository wiki")
 	cmd.Flags().BoolVarP(&opts.SettingsFlag, "settings", "s", false, "Open repository settings")
 	cmd.Flags().BoolVarP(&opts.NoBrowserFlag, "no-browser", "n", false, "Print destination URL instead of opening the browser")
+	cmd.Flags().BoolVarP(&opts.CommitFlag, "commit", "c", false, "Open the last commit")
 	cmd.Flags().StringVarP(&opts.Branch, "branch", "b", "", "Select another branch by passing in the branch name")
 
 	return cmd
@@ -113,6 +117,13 @@ func runBrowse(opts *BrowseOptions) error {
 		return fmt.Errorf("unable to determine base repository: %w", err)
 	}
 
+	if opts.CommitFlag {
+		commit, err := git.LastCommit()
+		if err == nil {
+			opts.Branch = commit.Sha
+		}
+	}
+
 	section, err := parseSection(baseRepo, opts)
 	if err != nil {
 		return err

pkg/cmd/browse/browse_test.go

@@ -3,6 +3,7 @@ package browse
 import (
 	"fmt"
 	"net/http"
+	"os"
 	"testing"
 
 	"github.com/cli/cli/v2/internal/ghrepo"
@@ -102,6 +103,14 @@ func TestNewCmdBrowse(t *testing.T) {
 			cli:      "main.go main.go",
 			wantsErr: true,
 		},
+		{
+			name: "last commit flag",
+			cli:  "-c",
+			wants: BrowseOptions{
+				CommitFlag: true,
+			},
+			wantsErr: false,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -133,7 +142,17 @@ func TestNewCmdBrowse(t *testing.T) {
 	}
 }
 
+func setGitDir(t *testing.T, dir string) {
+	// taken from git_test.go
+	old_GIT_DIR := os.Getenv("GIT_DIR")
+	os.Setenv("GIT_DIR", dir)
+	t.Cleanup(func() {
+		os.Setenv("GIT_DIR", old_GIT_DIR)
+	})
+}
+
 func Test_runBrowse(t *testing.T) {
+	setGitDir(t, "../../../git/fixtures/simple.git")
 	tests := []struct {
 		name          string
 		opts          BrowseOptions
@@ -296,6 +315,25 @@ func Test_runBrowse(t *testing.T) {
 			wantsErr:    false,
 			expectedURL: "https://github.com/mislav/will_paginate/blob/3-0-stable/init.rb?plain=1#L6",
 		},
+		{
+			name: "open last commit",
+			opts: BrowseOptions{
+				CommitFlag: true,
+			},
+			baseRepo:    ghrepo.New("vilmibm", "gh-user-status"),
+			wantsErr:    false,
+			expectedURL: "https://github.com/vilmibm/gh-user-status/tree/6f1a2405cace1633d89a79c74c65f22fe78f9659/",
+		},
+		{
+			name: "open last commit with a file",
+			opts: BrowseOptions{
+				CommitFlag:  true,
+				SelectorArg: "main.go",
+			},
+			baseRepo:    ghrepo.New("vilmibm", "gh-user-status"),
+			wantsErr:    false,
+			expectedURL: "https://github.com/vilmibm/gh-user-status/tree/6f1a2405cace1633d89a79c74c65f22fe78f9659/main.go",
+		},
 	}
 
 	for _, tt := range tests {