Moved a test regarding a content.go function to a new test file content_test.go.

Added some tests for general helpers, especially as a way to document the expected behavior,
and as a warm-up welcome contribution.

helpers/content_test.go

@@ -0,0 +1,22 @@
+package helpers
+
+import (
+	"testing"
+)
+
+func TestStripHTML(t *testing.T) {
+	type test struct {
+		input, expected string
+	}
+	data := []test{
+		{"<h1>strip h1 tag <h1>", "strip h1 tag "},
+		{"<p> strip p tag </p>", " strip p tag \n"},
+		{"</br> strip br<br>", " strip br\n"},
+	}
+	for i, d := range data {
+		output := StripHTML(d.input)
+		if d.expected != output {
+			t.Errorf("Test %d failed. Expected %q got %q", i, d.expected, output)
+		}
+	}
+}