fix: Standardize and wrap example descriptions at 80 chars (#2894)

cli/root_internal_test.go

@@ -0,0 +1,66 @@
+package cli
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_formatExamples(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name        string
+		examples    []example
+		wantMatches []string
+	}{
+		{
+			name:        "No examples",
+			examples:    nil,
+			wantMatches: nil,
+		},
+		{
+			name: "Output examples",
+			examples: []example{
+				{
+					Description: "Hello world",
+					Command:     "echo hello",
+				},
+				{
+					Description: "Bye bye",
+					Command:     "echo bye",
+				},
+			},
+			wantMatches: []string{
+				"Hello world", "echo hello",
+				"Bye bye", "echo bye",
+			},
+		},
+		{
+			name: "No description outputs commands",
+			examples: []example{
+				{
+					Command: "echo hello",
+				},
+			},
+			wantMatches: []string{
+				"echo hello",
+			},
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			got := formatExamples(tt.examples...)
+			if len(tt.wantMatches) == 0 {
+				require.Empty(t, got)
+			} else {
+				for _, want := range tt.wantMatches {
+					require.Contains(t, got, want)
+				}
+			}
+		})
+	}
+}