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@@ -58,66 +58,66 @@ describe('Signal', function()
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describe('Signal:map', function()
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it('should transform the signal value', function()
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local signal = Signal:new(5)
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local mapped_signal = signal:map(function(value) return value * 2 end)
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local test_signal = Signal:new(5)
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local mapped_signal = test_signal:map(function(value) return value * 2 end)
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assert.is.equal(mapped_signal:get(), 10) -- Initial transformation
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signal:set(10)
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test_signal:set(10)
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assert.is.equal(mapped_signal:get(), 20) -- Updated transformation
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end)
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it('should handle empty transformations', function()
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local signal = Signal:new(nil)
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local mapped_signal = signal:map(function(value) return value or 'default' end)
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local test_signal = Signal:new(nil)
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local mapped_signal = test_signal:map(function(value) return value or 'default' end)
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assert.is.equal(mapped_signal:get(), 'default') -- Return default
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signal:set 'new value'
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test_signal:set 'new value'
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assert.is.equal(mapped_signal:get(), 'new value') -- Return new value
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end)
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end)
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describe('Signal:filter', function()
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it('should only emit values that pass the filter', function()
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local signal = Signal:new(5)
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local filtered_signal = signal:filter(function(value) return value > 10 end)
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local test_signal = Signal:new(5)
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local filtered_signal = test_signal:filter(function(value) return value > 10 end)
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assert.is.equal(filtered_signal:get(), nil) -- Initial value should not pass
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signal:set(15)
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test_signal:set(15)
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assert.is.equal(filtered_signal:get(), 15) -- Now filtered
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signal:set(8)
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test_signal:set(8)
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assert.is.equal(filtered_signal:get(), 15) -- Does not pass the filter
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end)
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it('should handle empty initial values', function()
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local signal = Signal:new(nil)
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local filtered_signal = signal:filter(function(value) return value ~= nil end)
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local test_signal = Signal:new(nil)
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local filtered_signal = test_signal:filter(function(value) return value ~= nil end)
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assert.is.equal(filtered_signal:get(), nil) -- Should be nil
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signal:set(10)
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test_signal:set(10)
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assert.is.equal(filtered_signal:get(), 10) -- Should pass now
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end)
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end)
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describe('create_memo', function()
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it('should compute a derived value and update when dependencies change', function()
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local signal = Signal:new(2)
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local memoized_signal = tracker.create_memo(function() return signal:get() * 2 end)
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local test_signal = Signal:new(2)
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local memoized_signal = tracker.create_memo(function() return test_signal:get() * 2 end)
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assert.is.equal(memoized_signal:get(), 4) -- Initially compute 2 * 2
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signal:set(3)
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test_signal:set(3)
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assert.is.equal(memoized_signal:get(), 6) -- Update to 3 * 2 = 6
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signal:set(5)
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test_signal:set(5)
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assert.is.equal(memoized_signal:get(), 10) -- Update to 5 * 2 = 10
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end)
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it('should not recompute if the dependencies do not change', function()
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local call_count = 0
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local signal = Signal:new(10)
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local test_signal = Signal:new(10)
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local memoized_signal = tracker.create_memo(function()
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call_count = call_count + 1
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return signal:get() + 1
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return test_signal:get() + 1
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end)
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assert.is.equal(memoized_signal:get(), 11) -- Compute first value
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@@ -126,11 +126,11 @@ describe('Signal', function()
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memoized_signal:get() -- Call again, should use memoized value
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assert.is.equal(call_count, 1) -- Still should only be one call
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signal:set(10) -- Set the same value
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test_signal:set(10) -- Set the same value
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assert.is.equal(memoized_signal:get(), 11)
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assert.is.equal(call_count, 2)
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signal:set(20)
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test_signal:set(20)
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assert.is.equal(memoized_signal:get(), 21)
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assert.is.equal(call_count, 3)
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end)
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@@ -138,31 +138,31 @@ describe('Signal', function()
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describe('create_effect', function()
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it('should track changes and execute callback', function()
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local signal = Signal:new(5)
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local test_signal = Signal:new(5)
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local call_count = 0
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tracker.create_effect(function()
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signal:get() -- track as a dependency
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test_signal:get() -- track as a dependency
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call_count = call_count + 1
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end)
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assert.is.equal(call_count, 1)
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signal:set(10)
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test_signal:set(10)
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assert.is.equal(call_count, 2)
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end)
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it('should clean up signals and not call after dispose', function()
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local signal = Signal:new(5)
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local test_signal = Signal:new(5)
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local call_count = 0
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local unsubscribe = tracker.create_effect(function()
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call_count = call_count + 1
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return signal:get() * 2
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return test_signal:get() * 2
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end)
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assert.is.equal(call_count, 1) -- Initially calls
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unsubscribe() -- Unsubscribe the effect
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signal:set(10) -- Update signal value
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test_signal:set(10) -- Update signal value
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assert.is.equal(call_count, 1) -- Callback should not be called again
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end)
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end)
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