1 files changed, 28 insertions, 0 deletions
diff --git a/tests/tsource.ur b/tests/tsource.ur
new file mode 100644
index 00000000..20cb4860
--- /dev/null
+++ b/tests/tsource.ur
@@ -0,0 +1,28 @@
+fun doSubmit r =
+  return <xml>Done {[readError r.Amount1 * readError r.Amount2 * 2.0]}</xml>
+
+fun main () =
+  amount1S <- source "1";
+  amount2S <- source "1";
+  return <xml>  <body>
+   <form>
+      <table>
+        <tr><td>Amount1:</td><td><textbox{#Amount1}
+source={amount1S}/></td></tr>
+        <tr><td>Amount2:</td><td><textbox{#Amount2}
+source={amount2S}/></td></tr>
+        <tr><td>Total:</td><td><dyn signal={showTotal amount1S
+amount2S}/></td></tr>
+      </table>
+      <submit value="Buy" action={doSubmit}/>
+    </form>
+  </body>
+</xml>
+
+and showTotal amount1S amount2S =
+  a1 <- signal amount1S;
+  a2 <- signal amount2S;
+  return (case ((read a1), (read a2)) of
+           (None, _) => <xml></xml>
+         | (_, None) => <xml></xml>
+         | (Some a, Some b) => <xml>{[a * b * 2.0]}</xml>)