diff --git a/test/b64decode.c b/test/b64decode.c
new file mode 100644
index 0000000..93677e9
--- /dev/null
+++ b/test/b64decode.c
@@ -0,0 +1,26 @@
+#include <string.h>
+#include "buffer.h"
+#include "textcode.h"
+
+void b64encode(const char* c) {
+  char* buf=alloca(strlen(c)*2+4);
+  unsigned int dlen;
+  scan_base64(c,buf,&dlen);
+  buffer_put(buffer_1,buf,dlen);
+  buffer_putnlflush(buffer_1);
+}
+
+main(int argc,char* argv[]) {
+  int i;
+  for (i=1; i<argc; ++i) {
+    b64encode(argv[i]);
+  }
+  if (argc<2) {
+    char src[1024];
+    int len=read(0,src,sizeof(src)-1);
+    if (len==-1) return(1);
+    src[len]=0;
+    b64encode(src);
+  }
+  return 0;
+}
diff --git a/test/b64encode.c b/test/b64encode.c
new file mode 100644
index 0000000..3360e9a
--- /dev/null
+++ b/test/b64encode.c
@@ -0,0 +1,24 @@
+#include <string.h>
+#include "buffer.h"
+#include "textcode.h"
+
+void b64encode(const char* c) {
+  char* buf=alloca(strlen(c)*2+4);
+  buffer_put(buffer_1,buf,fmt_base64(buf,c,strlen(c)));
+  buffer_putnlflush(buffer_1);
+}
+
+main(int argc,char* argv[]) {
+  int i;
+  for (i=1; i<argc; ++i) {
+    b64encode(argv[i]);
+  }
+  if (argc<2) {
+    char src[1024];
+    int len=read(0,src,sizeof(src)-1);
+    if (len==-1) return(1);
+    src[len]=0;
+    b64encode(src);
+  }
+  return 0;
+}
diff --git a/test/byte_copy.c b/test/byte_copy.c
new file mode 100644
index 0000000..08288f6
--- /dev/null
+++ b/test/byte_copy.c
@@ -0,0 +1,14 @@
+#include "byte.h"
+#include <write12.h>
+
+int main() {
+  char buf[4096];
+  __write1("both aligned\n");
+  byte_copy(buf,16,"this is a test!\n");
+  __write1("destination aligned, source unaligned\n");
+  byte_copy(buf,1000,buf+1);
+  __write1("destination unaligned, source aligned\n");
+  byte_copy(buf+1,1000,buf);
+  __write1("both unaligned\n");
+  byte_copy(buf+1,1000,buf+3);
+}
diff --git a/test/urlencode.c b/test/urlencode.c
index 51df16e..e2dfa0f 100644
--- a/test/urlencode.c
+++ b/test/urlencode.c
@@ -13,5 +13,12 @@ main(int argc,char* argv[]) {
   for (i=1; i<argc; ++i) {
     urlencode(argv[i]);
   }
+  if (argc<2) {
+    char src[1024];
+    int len=read(0,src,sizeof(src)-1);
+    if (len==-1) return(1);
+    src[len]=0;
+    urlencode(src);
+  }
   return 0;
 }