chore: fixup

Signed-off-by: moul <[email protected]>

examples/gno.land/r/docs/add/add.gno

@@ -0,0 +1,42 @@
+package add
+
+import (
+	"strconv"
+	"time"
+
+	"gno.land/p/moul/txlink"
+)
+
+// Global variables to store the current number and last update timestamp
+var (
+	number     int
+	lastUpdate time.Time
+)
+
+// Add function to update the number and timestamp
+func Add(n int) {
+	number += n
+	lastUpdate = time.Now()
+}
+
+// Render displays the current number value, last update timestamp, and a link to call Add with 42
+func Render(path string) string {
+	// Display the current number and formatted last update time
+	result := "# Add Example\n\n"
+	result += "Current Number: " + strconv.Itoa(number) + "\n\n"
+	result += "Last Updated: " + formatTimestamp(lastUpdate) + "\n\n"
+
+	// Generate a transaction link to call Add with 42 as the default parameter
+	txLink := txlink.URL("Add", "n", "42")
+	result += "[Increase Number](" + txLink + ")\n"
+
+	return result
+}
+
+// Helper function to format the timestamp for readability
+func formatTimestamp(timestamp time.Time) string {
+	if timestamp.IsZero() {
+		return "Never"
+	}
+	return timestamp.Format("2006-01-02 15:04:05")
+}

examples/gno.land/r/docs/add/add_test.gno

@@ -0,0 +1,44 @@
+package add
+
+import (
+	"testing"
+)
+
+func TestRenderAndAdd(t *testing.T) {
+	// Initial Render output
+	output := Render("")
+	expected := `# Add Example
+
+Current Number: 0
+
+Last Updated: Never
+
+[Increase Number](/r/docs/add$help&func=Add&n=42)
+`
+	if output != expected {
+		t.Errorf("Initial Render failed, got:\n%s", output)
+	}
+
+	// Call Add with a value of 10
+	Add(10)
+
+	// Call Add again with a value of -5
+	Add(-5)
+
+	// Render after two Add calls
+	finalOutput := Render("")
+
+	// Initial Render output
+	output = Render("")
+	expected = `# Add Example
+
+Current Number: 5
+
+Last Updated: 2009-02-13 23:31:30
+
+[Increase Number](/r/docs/add$help&func=Add&n=42)
+`
+	if output != expected {
+		t.Errorf("Final Render failed, got:\n%s", output)
+	}
+}

examples/gno.land/r/docs/add/gno.mod

@@ -0,0 +1,3 @@
+module gno.land/r/docs/add
+
+require gno.land/p/moul/txlink v0.0.0-latest

examples/gno.land/r/docs/home/home.gno

@@ -9,6 +9,7 @@ Explore various examples to learn more about Gno functionality and usage.
 ## Examples
 
 - [Hello World](/r/docs/hello) - A simple introductory example.
+- [Add](/r/docs/add) - An interactive example to update a number with transactions.
 - [AVL Pager](/r/docs/avl_pager) - Paginate through AVL tree items.
 - ...