changes needed due to 3c91978d36

add posibility to inspect availability of a resource in a pool (testing only)
allow access to internal connection pool of db (testing only)

spec/pool_spec.cr

@@ -59,6 +59,25 @@ describe DB::Pool do
     pool.checkout.should be_a Closable
   end
 
+  it "should be available if not checkedout" do
+    resource = uninitialized Closable
+    pool = DB::Pool.new(initial_pool_size: 1) { resource = Closable.new }
+    pool.is_available?(resource).should be_true
+  end
+
+  it "should not be available if checkedout" do
+    pool = DB::Pool.new { Closable.new }
+    resource = pool.checkout
+    pool.is_available?(resource).should be_false
+  end
+
+  it "should be available if returned" do
+    pool = DB::Pool.new { Closable.new }
+    resource = pool.checkout
+    pool.release resource
+    pool.is_available?(resource).should be_true
+  end
+
   it "should wait for available resource" do
     pool = DB::Pool.new(max_pool_size: 1, initial_pool_size: 1) { Closable.new }
 

spec/statement_spec.cr

@@ -124,7 +124,8 @@ describe DB::Statement do
       expect_raises do
         db.exec "raise"
       end
-      db.@in_pool.should be_true
+      DummyDriver::DummyConnection.connections.size.should eq(1)
+      db.pool.is_available?(DummyDriver::DummyConnection.connections.first)
     end
   end
 end

src/db/database.cr

@@ -16,6 +16,8 @@ module DB
   class Database
     # :nodoc:
     getter driver
+    # :nodoc:
+    getter pool
 
     # Returns the uri with the connection settings to the database
     getter uri

src/db/pool.cr

@@ -53,6 +53,11 @@ module DB
       end
     end
 
+    # :nodon:
+    def is_available?(resource : T)
+      @available.includes?(resource)
+    end
+
     private def build_resource : T
       resource = @factory.call
       @total << resource