Test Observable.distinct;

tests/distinct.lua

@@ -0,0 +1,21 @@
+describe('distinct', function()
+  it('does not produce the same value twice', function()
+    local observable = Rx.Observable.fromTable({1, 1, 2, 1, 3, 3, 2, 1, 4}, ipairs):distinct()
+    expect(observable).to.produce(1, 2, 3, 4)
+  end)
+
+  it('produces an error if its parent errors', function()
+    local observable = Rx.Observable.fromValue(''):map(function(x) return x() end)
+    expect(observable.subscribe).to.fail()
+    expect(observable:distinct().subscribe).to.fail()
+  end)
+
+  it('completes when its parent completes', function()
+    local subject = Rx.Subject.create()
+    local onComplete = spy()
+    subject:distinct():subscribe(nil, nil, onComplete)
+    expect(#onComplete).to.equal(0)
+    subject:onComplete()
+    expect(#onComplete).to.equal(1)
+  end)
+end)

tests/observable.lua

@@ -154,4 +154,5 @@ describe('Observable', function()
   dofile('tests/combine.lua')
   dofile('tests/compact.lua')
   dofile('tests/concat.lua')
+  dofile('tests/distinct.lua')
 end)