like sql.t but using ExprHelpers directly

Only a few features that I've figured out so far.

diff --git a/t/expr-helpers.t b/t/expr-helpers.t
new file mode 100644 (file)
index 0000000..bef44c1
--- /dev/null
+++ b/t/expr-helpers.t
@@ -0,0 +1,44 @@
+use strictures 1;
+use Test::More qw(no_plan);
+
+use Devel::Dwarn;
+use Data::Query::Renderer::SQL::Naive;
+use Data::Query::ExprHelpers;
+
+my $rend = Data::Query::Renderer::SQL::Naive->new({ quote_chars => [ "'" ] });
+
+sub binding { map perl_scalar_value($_), @_ }
+
+sub dq_sql_is {
+  my $expr = shift;
+#::Dwarn($expr); return;
+  my $rendered = $rend->render($expr);
+  is_deeply($rendered, @_);
+}
+
+dq_sql_is 
+  Select([ Identifier('*') ], Identifier('foo')),
+  ['SELECT * FROM foo'],
+  'simple select';
+
+dq_sql_is
+  Join(
+    Select([ Identifier('*') ], Identifier('foo')),
+    Identifier('bar'),
+    perl_operator('==', Identifier('foo', 'x'), Identifier('bar', 'y'))
+  ),
+  ['SELECT * FROM foo JOIN bar ON foo.x = bar.y'],
+  'join on with dots';
+
+dq_sql_is 
+  Where(
+    perl_operator(
+      '==',
+      Identifier('x'),
+      Literal('SQL', '?', [ binding(1) ],),
+    ),
+    Select([ Identifier('*') ], Identifier('foo')),
+  ),
+  ['SELECT * FROM foo WHERE x = ?', binding(1)],
+  'simple select with where and bind';
+