info about importing libraries

README.md

@@ -37,6 +37,17 @@ environment variables DART_SOURCES and DART_SDK.
 
 # Limitations and workarounds
 
+## You can't import libraries
+
+    >> #import('mylib.dart');
+    Exception: 'console_declaration_3': Error: line 3 pos 1: unexpected token '#import'
+
+Workaround: `dart:io` is already loaded under the prefix `io`.
+
+Workaround: edit lib/sandbox.dart and add your imports to `_BASE`
+
+This is easy to fix, I just haven't done it yet...
+
 ## You can't "overwrite" a declared name.
 
     >> foo() => 1;

test/test_sandbox.dart

@@ -88,4 +88,11 @@ get TESTS() => {
     sandbox.execute('foo();');
     Expect.equals(42, sandbox.eval('bar()'));
   }),
+
+  'importFails': test((sandbox) { // Documented issue
+    Expect.throws(() => sandbox.import('bar.dart'));
+  }),
+  'ioAvailable': test((sandbox) { // Documented workaround
+    Expect.isNotNull(sandbox.eval('io.stdout'));
+  }),
 };