Fix date-based release output and tests

pkg/cmd/release/list/list.go

@@ -99,7 +99,7 @@ func listRun(opts *ListOptions) error {
 		if rel.PublishedAt.IsZero() {
 			pubDate = rel.CreatedAt
 		}
-		publishedAt := pubDate.String()
+		publishedAt := pubDate.Format(time.RFC3339)
 		if table.IsTTY() {
 			publishedAt = utils.FuzzyAgo(now.Sub(pubDate))
 		}

pkg/cmd/release/list/list_test.go

@@ -75,6 +75,9 @@ func Test_NewCmdList(t *testing.T) {
 }
 
 func Test_listRun(t *testing.T) {
+	frozenTime, err := time.Parse(time.RFC3339, "2020-08-31T15:44:24+02:00")
+	require.NoError(t, err)
+
 	tests := []struct {
 		name       string
 		isTTY      bool
@@ -97,6 +100,20 @@ func Test_listRun(t *testing.T) {
 			`),
 			wantStderr: ``,
 		},
+		{
+			name:  "machine-readable",
+			isTTY: false,
+			opts: ListOptions{
+				LimitResults: 30,
+			},
+			wantStdout: heredoc.Doc(`
+				v1.1.0	Draft	v1.1.0	2020-08-31T15:44:24+02:00
+				The big 1.0	Latest	v1.0.0	2020-08-31T15:44:24+02:00
+				1.0 release candidate	Pre-release	v1.0.0-pre.2	2020-08-31T15:44:24+02:00
+				New features		v0.9.2	2020-08-31T15:44:24+02:00
+			`),
+			wantStderr: ``,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -105,7 +122,10 @@ func Test_listRun(t *testing.T) {
 			io.SetStdinTTY(tt.isTTY)
 			io.SetStderrTTY(tt.isTTY)
 
-			relativeTime := time.Now().Add(time.Duration(-24) * time.Hour)
+			createdAt := frozenTime
+			if tt.isTTY {
+				createdAt = time.Now().Add(time.Duration(-24) * time.Hour)
+			}
 
 			fakeHTTP := &httpmock.Registry{}
 			fakeHTTP.Register(httpmock.GraphQL(`\bRepositoryReleaseList\(`), httpmock.StringResponse(fmt.Sprintf(`
@@ -144,7 +164,7 @@ func Test_listRun(t *testing.T) {
 						"publishedAt": "%[1]s"
 					}
 				]
-			} } } }`, relativeTime.Format(time.RFC3339))))
+			} } } }`, createdAt.Format(time.RFC3339))))
 
 			tt.opts.IO = io
 			tt.opts.HttpClient = func() (*http.Client, error) {

pkg/cmd/release/view/view.go

@@ -136,9 +136,9 @@ func renderReleasePlain(w io.Writer, release *shared.Release) error {
 	fmt.Fprintf(w, "draft:\t%v\n", release.IsDraft)
 	fmt.Fprintf(w, "prerelease:\t%v\n", release.IsPrerelease)
 	fmt.Fprintf(w, "author:\t%s\n", release.Author.Login)
-	fmt.Fprintf(w, "created:\t%s\n", release.CreatedAt)
+	fmt.Fprintf(w, "created:\t%s\n", release.CreatedAt.Format(time.RFC3339))
 	if !release.IsDraft {
-		fmt.Fprintf(w, "published:\t%s\n", release.PublishedAt)
+		fmt.Fprintf(w, "published:\t%s\n", release.PublishedAt.Format(time.RFC3339))
 	}
 	fmt.Fprintf(w, "url:\t%s\n", release.HTMLURL)
 	for _, a := range release.Assets {

pkg/cmd/release/view/view_test.go

@@ -155,8 +155,8 @@ func Test_viewRun(t *testing.T) {
 				draft:	false
 				prerelease:	false
 				author:	MonaLisa
-				created:	2020-08-31 15:44:24 +0200 CEST
-				published:	2020-08-31 15:44:24 +0200 CEST
+				created:	2020-08-31T15:44:24+02:00
+				published:	2020-08-31T15:44:24+02:00
 				url:	https://github.com/OWNER/REPO/releases/tags/v1.2.3
 				asset:	windows.zip
 				asset:	linux.tgz