Use producing.nothing more;

tests/average.lua

@@ -9,6 +9,6 @@ describe('average', function()
   end)
 
   it('produces nothing if there are no values to average', function()
-    expect(Rx.Observable.empty():average()).to.produce({})
+    expect(Rx.Observable.empty():average()).to.produce.nothing()
   end)
 end)

tests/find.lua

@@ -31,6 +31,6 @@ describe('find', function()
 
   it('completes after its parent completes if no value satisfied the predicate', function()
     local observable = Rx.Observable.fromRange(5):find(function() return false end)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 end)

tests/first.lua

@@ -7,7 +7,7 @@ describe('first', function()
 
   it('produces no elements if its parent produces no elements', function()
     local observable = Rx.Observable.create(function(observer) return observer:onCompleted() end):first()
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 
   it('produces the first element of its parent and immediately completes', function()

tests/last.lua

@@ -7,7 +7,7 @@ describe('last', function()
 
   it('produces no elements if its parent produces no elements', function()
     local observable = Rx.Observable.create(function(observer) return observer:onCompleted() end):last()
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 
   it('produces the last element of its parent and immediately completes', function()

tests/skip.lua

@@ -22,7 +22,7 @@ describe('skip', function()
 
   it('produces no values if it skips over all of the values of the original', function()
     local observable = Rx.Observable.fromTable({1, 2}, ipairs):skip(2)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 
   it('completes and does not fail if it skips over more values than were produced', function()

tests/skipWhile.lua

@@ -19,6 +19,6 @@ describe('skipWhile', function()
   it('produces no values if the predicate never returns false', function()
     local function isEven(x) return x % 2 == 0 end
     local observable = Rx.Observable.fromTable({2, 4, 6}):skipWhile(isEven)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 end)

tests/take.lua

@@ -7,12 +7,12 @@ describe('take', function()
 
   it('produces nothing if the count is zero', function()
     local observable = Rx.Observable.fromValue(3):take(0)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 
   it('produces nothing if the count is less than zero', function()
     local observable = Rx.Observable.fromValue(3):take(-3)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 
   it('takes one element if no count is specified', function()

tests/takeWhile.lua

@@ -19,6 +19,6 @@ describe('takeWhile', function()
   it('produces no values if the predicate never returns true', function()
     local function isEven(x) return x % 2 == 0 end
     local observable = Rx.Observable.fromTable({1, 3, 5}):takeWhile(isEven)
-    expect(observable).to.produce({})
+    expect(observable).to.produce.nothing()
   end)
 end)