initial commits

writeframebutton3.go

@@ -0,0 +1,21 @@
+package frameproto
+
+import (
+	"io"
+)
+
+// WriteFrameButton3 will write the HTML <meta/> element for the Frame-Protocol's (i.e., Farcaster Frame's) "fc:frame:button:3" name-value pair.
+//
+// For example, this call:
+//
+//	var label string = "go forward"
+//	
+//	frameproto.WriteFrameButton3(writer, label)
+//
+// Would write this HTML <meta/> element:
+//
+//	<meta property="fc:frame:button:3" content="go forward" />
+func WriteFrameButton3(writer io.Writer, label string) {
+	const property string = MetaPropertyFrameButton3
+	writeMetaPropertyContent(writer, property, label)
+}

writeframebutton3_test.go

@@ -0,0 +1,68 @@
+package frameproto
+
+import (
+	"testing"
+
+	"strings"
+)
+
+func TestWriteFrameButton3(t *testing.T) {
+
+	tests := []struct{
+		Label string
+		Expected string
+	}{
+		{
+			Label: "",
+			Expected: `<meta property="fc:frame:button:3" content="" />`+"\n",
+		},
+
+
+
+		{
+			Label: "something",
+			Expected: `<meta property="fc:frame:button:3" content="something" />`+"\n",
+		},
+
+
+
+		{
+			Label: "Hello world! 🙂",
+			Expected: `<meta property="fc:frame:button:3" content="Hello world! 🙂" />`+"\n",
+		},
+
+
+
+		{
+			Label: "go forward",
+			Expected: `<meta property="fc:frame:button:3" content="go forward" />`+"\n",
+		},
+
+
+
+		{
+			Label: "I like to eat, eat, eat, apples and bananas",
+			Expected: `<meta property="fc:frame:button:3" content="I like to eat, eat, eat, apples and bananas" />`+"\n",
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var buffer strings.Builder
+
+		WriteFrameButton3(&buffer, test.Label)
+
+		expected := test.Expected
+		actual   := buffer.String()
+
+		if expected != actual {
+			t.Errorf("For test #%d, the actual written meta-tag is not what was expected." ,testNumber)
+			t.Logf("EXPECTED: %s", expected)
+			t.Logf("ACTUAL:   %s", actual)
+			t.Logf("EXPECTED: %q", expected)
+			t.Logf("ACTUAL:   %q", actual)
+			t.Logf("LABEL: %q", test.Label)
+			continue
+		}
+	}
+}