api: Add go files

I know this is a huge commit, but I can't be bothered to check
this in part by part.

api/comment_delete_test.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"testing"
+	"time"
+)
+
+func TestCommentDeleteBasics(t *testing.T) {
+	failTestOnError(t, setupTestEnv())
+
+	commentHex, _ := commentNew("temp-commenter-hex", "example.com", "/path.html", "root", "**foo**", "approved", time.Now().UTC())
+	commentNew("temp-commenter-hex", "example.com", "/path.html", commentHex, "**bar**", "approved", time.Now().UTC())
+
+	if err := commentDelete(commentHex); err != nil {
+		t.Errorf("unexpected error deleting comment: %v", err)
+		return
+	}
+
+	c, _, _ := commentList("temp-commenter-hex", "example.com", "/path.html", false)
+
+	if len(c) != 0 {
+		t.Errorf("expected no comments found %d comments", len(c))
+		return
+	}
+}
+
+func TestCommentDeleteEmpty(t *testing.T) {
+	failTestOnError(t, setupTestEnv())
+
+	if err := commentDelete(""); err == nil {
+		t.Errorf("expected error deleting comment with empty commentHex")
+		return
+	}
+}