test/factbase/test_looged.rb in factbase-0.0.45 vs test/factbase/test_looged.rb in factbase-0.0.46

@@ -20,10 +20,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
 require 'minitest/autorun'
 require 'loog'
+require_relative '../../lib/factbase'
 require_relative '../../lib/factbase/looged'
 
 # Test.
 # Author:: Yegor Bugayenko ([e-mail])
 # Copyright:: Copyright (c) 2024 Yegor Bugayenko
@@ -43,19 +44,28 @@
     assert_equal(1, found)
     assert_equal(2, fb.size)
   end
 
   def test_with_txn
-    fb = Factbase::Looged.new(Factbase.new, Loog::NULL)
+    log = Loog::Buffer.new
+    fb = Factbase::Looged.new(Factbase.new, log)
     assert(
       fb.txn do |fbt|
         fbt.insert.foo = 42
       end
     )
     assert_equal(1, fb.size)
+    assert(log.to_s.include?('modified'), log)
   end
 
+  def test_with_empty_txn
+    log = Loog::Buffer.new
+    fb = Factbase::Looged.new(Factbase.new, log)
+    assert(!fb.txn { |fbt| fbt.query('(always)').each.to_a })
+    assert(log.to_s.include?('didn\'t touch'), log)
+  end
+
   def test_returns_int
     fb = Factbase.new
     fb.insert
     fb.insert
     assert_equal(2, Factbase::Looged.new(fb, Loog::NULL).query('(always)').each(&:to_s))
@@ -100,10 +110,10 @@
       'Inserted new fact #1',
       'Inserted new fact #2',
       'Set \'bar\' to 3 (Integer)',
       'Set \'str\' to "Он поскорей звонит. Вбегает\n   ... Отъехать в поле к двум дубкам." (String)',
       'Found 1 fact(s) by \'(exists bar)\'',
-      'Deleted 3 fact(s) by \'(not (exists bar))\''
+      'Deleted 3 fact(s) out of 4 by \'(not (exists bar))\''
     ].each do |s|
       assert(log.to_s.include?(s), "#{log}\n")
     end
   end
 end