예제 #1
0
파일: fftw_test.go 프로젝트: jtc25/go-fftw
func FFTR2CSpec(c gospec.Context) {
	signal := make([]float64, 16)
	F_signal := make([]complex128, 9)

	for i := range signal {
		signal[i] = math.Sin(float64(i) / float64(len(signal)) * math.Pi * 2)
	}
	forward := PlanDftR2C1d(signal, F_signal, Estimate)
	forward.Execute()
	c.Specify("Running a R2C transform doesn't destroy the input.", func() {
		for i := range signal {
			c.Expect(signal[i], gospec.Equals, math.Sin(float64(i)/float64(len(signal))*math.Pi*2))
		}
	})

	c.Specify("Forward 1d Real to Complex FFT  works properly.", func() {
		c.Expect(real(F_signal[0]), gospec.IsWithin(1e-9), 0.0)
		c.Expect(imag(F_signal[0]), gospec.IsWithin(1e-9), 0.0)
		c.Expect(real(F_signal[1]), gospec.IsWithin(1e-9), 0.0)
		c.Expect(imag(F_signal[1]), gospec.IsWithin(1e-9), -float64(len(signal))/2)
		for i := 2; i < len(F_signal)-1; i++ {
			c.Expect(real(F_signal[i]), gospec.IsWithin(1e-9), 0.0)
			c.Expect(imag(F_signal[i]), gospec.IsWithin(1e-9), 0.0)
		}
	})
}
예제 #2
0
func CMWCRandSpec(c gospec.Context) {
	c.Specify("CMWC32 conforms properly to math/rand.Rand interface.", func() {
		c1 := cmwc.MakeCmwc(3278470471, 4)
		c2 := cmwc.MakeCmwc(3278470471, 4)
		c1.Seed(1234)
		c2.Seed(4321)

		// Make sure that we don't generate numbers with the most significant
		// bit set
		for i := 0; i < 1000000; i++ {
			v1 := c1.Int63()
			c.Expect(v1 >= 0, Equals, true)
			if v1 < 0 {
				break
			}
			c2.Int63()
		}

		// Make sure that two generators with the same parameters, but in
		// different states, are in the exact same state when seeded with
		// the same seed.
		c1.Seed(0xabcdef12)
		c2.Seed(0xabcdef12)
		for i := 0; i < 10000; i++ {
			v1 := c1.Int63()
			v2 := c2.Int63()
			c.Expect(v1, Equals, v2)
			if v1 != v2 {
				break
			}
		}
	})
}
예제 #3
0
func InterfaceTypeRegistrySpec(c gospec.Context) {
	c.Specify("Test that types containing interfaces are properly encoded.", func() {
		var tr core.TypeRegistry
		tr.Register(encodable6{})
		tr.Register(BarerImpl1{})
		tr.Register(BarerImpl2{})
		tr.Complete()

		v1 := encodable6{
			Interface: BarerImpl1{10, "foo"},
		}
		v2 := encodable6{
			Interface: BarerImpl2{3, 4},
		}

		b := bytes.NewBuffer(nil)
		err := tr.Encode(v1, b)
		c.Assume(err, gospec.Equals, error(nil))
		err = tr.Encode(v2, b)
		c.Assume(err, gospec.Equals, error(nil))

		d1, err := tr.Decode(b)
		c.Assume(err, gospec.Equals, error(nil))
		d2, err := tr.Decode(b)
		c.Assume(err, gospec.Equals, error(nil))

		c1, ok := d1.(encodable6)
		c.Assume(ok, gospec.Equals, true)
		c.Expect(c1.Interface.Bar(), gospec.Equals, "10:foo")
		c2, ok := d2.(encodable6)
		c.Assume(ok, gospec.Equals, true)
		c.Expect(c2.Interface.Bar(), gospec.Equals, "3:4")
	})
}
예제 #4
0
func StackSpec(c gospec.Context) {
	stack := NewStack()

	c.Specify("An empty stack", func() {

		c.Specify("is empty", func() {
			c.Expect(stack.Empty(), IsTrue)
		})
		c.Specify("After a push, the stack is no longer empty", func() {
			stack.Push("a push")
			c.Expect(stack.Empty(), IsFalse)
		})
	})

	c.Specify("When objects have been pushed onto a stack", func() {
		stack.Push("pushed first")
		stack.Push("pushed last")

		c.Specify("the object pushed last is popped first", func() {
			poppedFirst := stack.Pop()
			c.Expect(poppedFirst, Equals, "pushed last")
		})
		c.Specify("the object pushed first is popped last", func() {
			stack.Pop()
			poppedLast := stack.Pop()
			c.Expect(poppedLast, Equals, "pushed first")
		})
		c.Specify("After popping all objects, the stack is empty", func() {
			stack.Pop()
			stack.Pop()
			c.Expect(stack.Empty(), IsTrue)
		})
	})
}
예제 #5
0
func FFT1dSpec(c gospec.Context) {
	signal := Alloc1d(16)
	new_in := Alloc1d(16)
	new_out := Alloc1d(16)
	for i := range signal {
		signal[i] = complex(float32(i), float32(-i))
		new_in[i] = signal[i]
	}
	forward := PlanDft1d(signal, signal, Forward, Estimate)
	c.Specify("Creating a plan doesn't overwrite an existing array if fftw.Estimate is used.", func() {
		for i := range signal {
			c.Expect(signal[i], gospec.Equals, complex(float32(i), float32(-i)))
		}
	})

	// A simple real cosine should result in transform with two spikes, one at S[1] and one at S[-1]
	// The spikes should be real and have amplitude equal to len(S)/2 (because fftw doesn't normalize)
	for i := range signal {
		signal[i] = complex(float32(math.Cos(float64(i)/float64(len(signal))*math.Pi*2)), 0)
		new_in[i] = signal[i]
	}
	forward.Execute()
	c.Specify("Forward 1d FFT works properly.", func() {
		peakVerifier(signal, c)
	})

	// This should also be the case when using new arrays...
	forward.ExecuteNewArray(new_in, new_out)
	c.Specify("New array Forward 1d FFT works properly", func() {
		peakVerifier(new_out, c)
	})
}
예제 #6
0
func CommandNSpec(c gospec.Context) {
	c.Specify("Sample sprite loads correctly", func() {
		s, err := sprite.LoadSprite("test_sprite")
		c.Expect(err, Equals, nil)
		for i := 0; i < 2000; i++ {
			s.Think(50)
		}
		s.CommandN([]string{
			"turn_right",
			"turn_right",
			"turn_right",
			"turn_right",
			"turn_right",
			"turn_right",
			"turn_left",
			"turn_left",
			"turn_right",
			"turn_right",
			"turn_right",
			"turn_left",
			"turn_left"})
		s.Think(5000)
		c.Expect(s.Facing(), Equals, 1)
		for i := 0; i < 3000; i++ {
			s.Think(50)
		}
	})
}
예제 #7
0
func LoadSpriteSpec(c gospec.Context) {
	c.Specify("Sample sprite loads correctly", func() {
		s, err := sprite.LoadSprite("test_sprite")
		c.Expect(err, Equals, nil)
		for i := 0; i < 2000; i++ {
			s.Think(50)
		}
		s.Command("defend")
		s.Command("undamaged")
		s.Command("defend")
		s.Command("undamaged")
		for i := 0; i < 3000; i++ {
			s.Think(50)
		}
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_left")
		s.Command("turn_left")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_right")
		s.Command("turn_left")
		s.Command("turn_left")
		// s.Think(5000)
		for i := 0; i < 300; i++ {
			s.Think(50)
		}
		c.Expect(s.Facing(), Equals, 1)
	})
}
예제 #8
0
func TopologicalSortSpec(c gospec.Context) {
	gr := NewDirectedMap()
	c.Specify("Single node graph", func() {
		gr.AddNode(VertexId(1))
		nodes, hasCycle := TopologicalSort(gr)
		c.Expect(hasCycle, IsFalse)
		c.Expect(nodes, ContainsExactly, Values(VertexId(1)))
	})

	c.Specify("Simple two nodes graph", func() {
		gr.AddArc(1, 2)
		nodes, hasCycle := TopologicalSort(gr)
		c.Expect(hasCycle, IsFalse)
		c.Expect(nodes, ContainsExactly, Values(VertexId(1), VertexId(2)))
	})

	c.Specify("Pseudo loops", func() {
		gr.AddArc(1, 2)
		gr.AddArc(2, 3)
		gr.AddArc(1, 4)
		gr.AddArc(4, 3)

		_, hasCycle := TopologicalSort(gr)
		c.Expect(hasCycle, IsFalse)
	})
}
예제 #9
0
func PolySpec2(c gospec.Context) {
	p := linear.Poly{
		{-1, 0},
		{-3, 0},
		{0, 10},
		{3, 0},
		{1, 0},
		{2, 1},
		{-2, 1},
	}
	c.Specify("Check that exterior and interior segments of a polygon are correctly identified.", func() {
		visible_exterior := []linear.Seg2{
			linear.MakeSeg2(-1, 0, -3, 0),
			linear.MakeSeg2(2, 1, -2, 1),
			linear.MakeSeg2(3, 0, 1, 0),
		}
		visible_interior := []linear.Seg2{
			linear.MakeSeg2(2, 1, -2, 1),
			linear.MakeSeg2(-3, 0, 0, 10),
			linear.MakeSeg2(0, 10, 3, 0),
			linear.MakeSeg2(-1, 0, -3, 0),
			linear.MakeSeg2(3, 0, 1, 0),
		}
		c.Expect(p.VisibleExterior(linear.Vec2{0, -10}), ContainsExactly, visible_exterior)
		c.Expect(p.VisibleInterior(linear.Vec2{0, 5}), ContainsExactly, visible_interior)
	})
}
예제 #10
0
func MultiValueReturnSpec(c gospec.Context) {
	c.Specify("Functions with zero or more than one return values work.", func() {
		context := polish.MakeContext()
		polish.AddIntMathContext(context)
		rev3 := func(a, b, c int) (int, int, int) {
			return c, b, a
		}
		context.AddFunc("rev3", rev3)
		rev5 := func(a, b, c, d, e int) (int, int, int, int, int) {
			return e, d, c, b, a
		}
		context.AddFunc("rev5", rev5)

		res, err := context.Eval("- - - - rev5 rev3 1 2 rev3 4 5 6")
		c.Assume(len(res), Equals, 1)
		c.Assume(err, Equals, nil)
		// - - - - rev5 rev3 1 2 rev3 4 5 6
		// - - - - rev5 rev3 1 2 6 5 4
		// - - - - rev5 6 2 1 5 4
		// - - - - 4 5 1 2 6
		// - - - -1 1 2 6
		// - - -2 2 6
		// - -4 6
		// -10
		c.Expect(int(res[0].Int()), Equals, -10)
	})
}
예제 #11
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func checkOrder(c gospec.Context, a adag, order []int) {
	c.Expect(len(a), Equals, len(order))
	c.Specify("Ordering contains all vertices exactly once", func() {
		all := make(map[int]bool)
		for _, v := range order {
			all[v] = true
		}
		c.Expect(len(all), Equals, len(order))
		for i := 0; i < len(a); i++ {
			c.Expect(all[i], Equals, true)
		}
	})
	c.Specify("Successors of a vertex always occur later in the ordering", func() {
		for i := 0; i < len(order); i++ {
			all := a.AllSuccessors(order[i])
			for j := range order {
				if i == j {
					continue
				}
				succ, ok := all[order[j]]
				if j < i {
					c.Expect(!ok, Equals, true)
				} else {
					c.Expect(!ok || succ, Equals, true)
				}
			}
		}
	})
}
예제 #12
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func ComplexOperationsSpec(c gospec.Context) {
	c.Specify("Vec2.DistToLine() works.", func() {
		centers := []linear.Vec2{
			linear.Vec2{10, 12},
			linear.Vec2{1, -9},
			linear.Vec2{-100, -42},
			linear.Vec2{0, 1232},
		}
		radiuses := []float64{3, 10.232, 435, 1}
		thetas := []float64{0.001, 0.1, 1, 1.01, 0.034241, 0.789, 90, 179, 180}
		angles := []float64{1.01, 1.0, 1.11111, 930142}
		for _, center := range centers {
			for _, radius := range radiuses {
				for _, angle := range angles {
					for _, theta := range thetas {
						a := linear.Vec2{math.Cos(angle), math.Sin(angle)}
						b := linear.Vec2{math.Cos(angle + theta), math.Sin(angle + theta)}
						seg := linear.Seg2{a.Scale(radius).Add(center), b.Scale(radius).Add(center)}
						dist := center.DistToLine(seg)
						real_dist := radius * math.Cos(theta/2)
						if real_dist < 0 {
							real_dist = -real_dist
						}
						c.Expect(dist, IsWithin(1e-9), real_dist)
					}
				}
			}
		}
	})
}
예제 #13
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// Helpers
func DecodePositionSpecs(c gospec.Context) {
	c.Specify("[Decode] Decodes GeoHash to PreciseLocation + Error", func() {
		value := Decode("ww8p1r4t8")

		c.Expect(value.Location.Latitude, gospec.Satisfies, value.Location.Latitude >= 37.83 && value.Location.Latitude <= (37.84))
		c.Expect(value.Location.Longitude, gospec.Satisfies, value.Location.Longitude >= 112.55 && value.Location.Longitude <= (112.56))
	})
}
예제 #14
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func FindPortSpecs(c gospec.Context) {
	c.Specify("[findPort] Finds an open port", func() {
		port, err := findPort()
		c.Expect(err, gospec.Equals, nil)
		c.Expect(port, gospec.Satisfies, port >= 1024)
	})

}
예제 #15
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func AcceptanceSpec(c gospec.Context) {

	c.Specify("When send structed data should return stracted data", func() {

		expectedData := &ResponseData{0, "3, 5, 7, 20"}
		actualData := &TaskData{0, PING, "3, 5, 7, 20"}

		var result = SendRequest(actualData)
		c.Expect(result.TaskId, Equals, expectedData.TaskId)
		c.Expect(result.ResultData, Equals, expectedData.ResultData)
	})

	/*c.Specify("When send unsorted strings data should return sorted strings data", func() {

				actualData := &TaskData{0, SORT, "7, 3, 20, 5"}
				expectedData := &TaskData{0, SORT, "3, 5, 7, 20"}

				var result = SendRequest(actualData)
				c.Expect(result.TaskData, Equals, expectedData.TaskData)
		})

		c.Specify("When send unsorted strings data processor should return sorted strings data", func() {
				actualData := &TaskData{0, SORT, "7, 3, 40, 5"}
				expectedData := &ResponseData{0, "3, 5, 7, 40"}

				requestChannel := make(chan domain.TaskData)
				responseChannel := make(chan domain.ResponseData)
				go server.TaskProcessor(requestChannel, responseChannel)
				requestChannel <-  *actualData

				var result = <- responseChannel
				c.Expect(result.ResultData, Equals, expectedData.ResultData)
				c.Expect(result.TaskId, Equals, expectedData.TaskId)

		})

		c.Specify("Test task processor with many tasks", func() {
				actualData := &TaskData{0, SORT, "7, 3, 40, 5"}
				expectedData := &ResponseData{0, "3, 5, 7, 40"}

				requestChannel := make(chan domain.TaskData, 100)
				responseChannel := make(chan domain.ResponseData, 100)
				go server.TaskProcessor(requestChannel, responseChannel)

				for i := 0; i < 10; i++ {
					requestChannel <-  *actualData
				}
				killPackage := &TaskData{0, KILL, "7, 3, 40, 5"}
				requestChannel <-  *killPackage

				for i := 0; i < 10; i++ {
	//				requestChannel <-  *actualData
					var result = <- responseChannel
					c.Expect(result.ResultData, Equals, expectedData.ResultData)
					c.Expect(result.TaskId, Equals, expectedData.TaskId)
				}
			})*/
}
예제 #16
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func QuebraLinhaTest(c gospec.Context) {
	c.Specify("Caso texto seja menor q tamanho maximo", func() {
		c.Expect(QuebraLinha("ola mundo", 14), Equals, "ola mundo")
	})

	c.Specify("Caso texto seja maior q tamanho maximo", func() {
		c.Expect(QuebraLinha("lavarini lindo demais", 15), Equals, "lavarini lindo\ndemais")
	})
}
예제 #17
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func ParsingSpec(c gospec.Context) {
	c.Specify("Whitespace is parsed properly.", func() {
		context := polish.MakeContext()
		polish.AddIntMathContext(context)
		res, err := context.Eval("    +           1                      3")
		c.Assume(len(res), Equals, 1)
		c.Assume(err, Equals, nil)
		c.Expect(int(res[0].Int()), Equals, 4)
	})
}
예제 #18
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// Helpers
func NeighborSpecs(c gospec.Context) {
	c.Specify("[Neighbor] North neighbor", func() {
		value := Neighbor("dqcjq", [2]CardialDirections{North, None})
		c.Expect(string(value), gospec.Equals, "dqcjw")
	})

	c.Specify("[Neighbor] South West neighbor", func() {
		value := Neighbor("dqcjq", [2]CardialDirections{South, West})
		c.Expect(string(value), gospec.Equals, "dqcjj")
	})
}
예제 #19
0
파일: stuff_test.go 프로젝트: tusj/go-graph
func MatrixIndexerSpec(c gospec.Context) {
	size := 100
	usedIds := make(map[int]bool)
	nodesIds := make(map[VertexId]int)
	for i := 0; i < size; i++ {
		for j := 0; j < i; j++ {
			connId := matrixConnectionsIndexer(VertexId(i), VertexId(j), nodesIds, size, true)
			_, ok := usedIds[connId]
			c.Expect(ok, IsFalse)
			usedIds[connId] = true
		}
	}
}
예제 #20
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func FibSpec(c gospec.Context) {
	fib := NewFib().Sequence(10)

	c.Specify("The first two Fibonacci numbers are 0 and 1", func() {
		c.Expect(fib[0], Equals, 0)
		c.Expect(fib[1], Equals, 1)
	})
	c.Specify("Each remaining number is the sum of the previous two", func() {
		for i := 2; i < len(fib); i++ {
			c.Expect(fib[i], Equals, fib[i-1]+fib[i-2])
		}
	})
}
예제 #21
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func DirectedGraphArcsFilterSpec(c gospec.Context) {
	gr := NewDirectedMap()
	gr.AddArc(1, 2)
	gr.AddArc(2, 3)
	gr.AddArc(3, 4)
	gr.AddArc(2, 4)
	gr.AddArc(4, 5)
	gr.AddArc(1, 6)
	gr.AddArc(2, 6)

	c.Specify("Single filtered arc", func() {
		ftail := VertexId(2)
		fhead := VertexId(3)
		f := NewDirectedGraphArcFilter(gr, ftail, fhead)

		c.Specify("shouldn't be checked", func() {
			c.Expect(f.CheckArc(ftail, fhead), IsFalse)
		})

		c.Specify("shouldn't appear in accessors", func() {
			c.Expect(CollectVertexes(f.GetAccessors(VertexId(ftail))), Not(Contains), fhead)
		})
		c.Specify("shouldn't appear in predecessors", func() {
			c.Expect(CollectVertexes(f.GetPredecessors(VertexId(fhead))), Not(Contains), ftail)
		})
		c.Specify("shouldn't appear in iterator", func() {
			for conn := range f.ArcsIter() {
				c.Expect(conn.Tail == ftail && conn.Head == fhead, IsFalse)
			}
		})
	})
}
예제 #22
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func Mapper2Spec(c gospec.Context) {
	c.Specify("Map from []int to []float64", func() {
		a := []int{0, 1, 2, 3, 4}
		var b []float64
		algorithm.Map2(a, &b, func(n int) float64 { return float64(n) })
		c.Expect(b, ContainsInOrder, []float64{0, 1, 2, 3, 4})
	})
	// c.Specify("Map from []int to []string", func() {
	//   a := []int{0,1,2,3,4}
	//   var b []string
	//   b = algorithm.Map(a, []string{}, func(v interface{}) interface{} { return fmt.Sprintf("%d", v) }).([]string)
	//   c.Expect(b, ContainsInOrder, []string{"0", "1", "2", "3", "4"})
	// })
}
예제 #23
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func MapperSpec(c gospec.Context) {
	c.Specify("Map from []int to []float64", func() {
		a := []int{0, 1, 2, 3, 4}
		var b []float64
		b = algorithm.Map(a, []float64{}, func(v interface{}) interface{} { return float64(v.(int)) }).([]float64)
		c.Expect(b, ContainsInOrder, []float64{0, 1, 2, 3, 4})
	})
	c.Specify("Map from []int to []string", func() {
		a := []int{0, 1, 2, 3, 4}
		var b []string
		b = algorithm.Map(a, []string{}, func(v interface{}) interface{} { return fmt.Sprintf("%d", v) }).([]string)
		c.Expect(b, ContainsInOrder, []string{"0", "1", "2", "3", "4"})
	})
}
예제 #24
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func ReachableDestinationsSpec(c gospec.Context) {
	b := [][]int{
		[]int{1, 2, 9, 4, 0, 2, 1}, // 0 - 6
		[]int{0, 0, 0, 0, 0, 1, 1}, // 7 - 13
		[]int{2, 1, 5, 5, 0, 2, 1}, // 14 - 20
		[]int{1, 1, 1, 9, 0, 1, 1}, // 21 - 27
	}
	c.Specify("Check reachability", func() {
		reachable := algorithm.ReachableDestinations(board(b), []int{14}, []int{0, 2, 5, 13, 17, 22})
		c.Expect(reachable, ContainsInOrder, []int{17, 22})
		reachable = algorithm.ReachableDestinations(board(b), []int{1, 26}, []int{0, 2, 5, 13, 17, 22})
		c.Expect(reachable, ContainsInOrder, []int{0, 2, 5, 13})
	})
}
예제 #25
0
파일: fftw_test.go 프로젝트: jtc25/go-fftw
func Alloc3dSpec(c gospec.Context) {
	d100x20x10 := Alloc3d(100, 20, 10)
	c.Specify("Allocates the appropriate memory for 3d arrays.", func() {
		c.Expect(len(d100x20x10), gospec.Equals, 100)
		for _, v := range d100x20x10 {
			c.Expect(len(v), gospec.Equals, 20)
			for _, v := range v {
				c.Expect(len(v), gospec.Equals, 10)
			}
		}
		counter := 0.0
		for i := range d100x20x10 {
			for j := range d100x20x10[i] {
				for k := range d100x20x10[i][j] {
					d100x20x10[i][j][k] = complex(counter, 0)
					counter += 1.0
				}
			}
		}
		counter = 0.0
		for i := range d100x20x10 {
			for j := range d100x20x10[i] {
				for k := range d100x20x10[i][j] {
					c.Expect(real(d100x20x10[i][j][k]), gospec.Equals, counter)
					counter += 1.0
				}
			}
		}
	})
}
예제 #26
0
func UnorderedTypeRegistrySpec(c gospec.Context) {
	c.Specify("Test that the coder can decode packets out of order.", func() {
		var tr core.TypeRegistry
		tr.Register(encodable1{})
		tr.Register(encodable2{})
		tr.Complete()

		v1 := encodable1{1, 2}
		v2 := encodable2{3}
		v3 := encodable2{4}
		v4 := encodable1{5, 6}

		b1 := bytes.NewBuffer(nil)
		err := tr.Encode(v1, b1)
		c.Assume(err, gospec.Equals, error(nil))

		b2 := bytes.NewBuffer(nil)
		err = tr.Encode(v2, b2)
		c.Assume(err, gospec.Equals, error(nil))

		b3 := bytes.NewBuffer(nil)
		err = tr.Encode(v3, b3)
		c.Assume(err, gospec.Equals, error(nil))

		b4 := bytes.NewBuffer(nil)
		err = tr.Encode(v4, b4)
		c.Assume(err, gospec.Equals, error(nil))

		buf := bytes.NewBuffer(nil)
		buf.Write(b1.Bytes())
		buf.Write(b3.Bytes())
		buf.Write(b4.Bytes())
		buf.Write(b2.Bytes())

		d1, err := tr.Decode(buf)
		c.Assume(err, gospec.Equals, error(nil))
		d3, err := tr.Decode(buf)
		c.Assume(err, gospec.Equals, error(nil))
		d4, err := tr.Decode(buf)
		c.Assume(err, gospec.Equals, error(nil))
		d2, err := tr.Decode(buf)
		c.Assume(err, gospec.Equals, error(nil))

		c.Expect(d1, gospec.Equals, v1)
		c.Expect(d2, gospec.Equals, v2)
		c.Expect(d3, gospec.Equals, v3)
		c.Expect(d4, gospec.Equals, v4)
	})
}
예제 #27
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func Float64ContextSpec(c gospec.Context) {
	c.Specify("Float64 context works properly.", func() {
		context := polish.MakeContext()
		polish.AddFloat64MathContext(context)
		v1 := math.E * math.Pi * math.Exp(1.23456-math.Log10(77))
		res, err := context.Eval("* e * pi ^ e - 1.23456 log10 77.0")
		c.Assume(len(res), Equals, 1)
		c.Assume(err, Equals, nil)
		c.Expect(res[0].Float(), IsWithin(1e-9), v1)
		res, err = context.Eval("< e pi")
		c.Assume(len(res), Equals, 1)
		c.Assume(err, Equals, nil)
		c.Expect(res[0].Bool(), Equals, true)
	})
}
예제 #28
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func CMWCSpec(c gospec.Context) {
	c.Specify("CMWC32 produces the same output as SlowCMWC.", func() {
		fast := core.MakeCMWC32(11, 4)
		slow := core.MakeSlowCMWC(11, 1<<32, 1<<4)
		N := 100000
		for i := 0; i < N; i++ {
			f := fast.Next()
			s := slow.Next()
			c.Expect(f, Equals, s)
			if f != s {
				break
			}
		}
	})
}
예제 #29
0
파일: fftw_test.go 프로젝트: jtc25/go-fftw
func FFT3dSpec(c gospec.Context) {
	signal := Alloc3d(32, 16, 8)
	for i := range signal {
		for j := range signal[i] {
			for k := range signal[i][j] {
				signal[i][j][k] = complex(float64(i+j+k), float64(-i-j-k))
			}
		}
	}
	forward := PlanDft3d(signal, signal, Forward, Estimate)
	c.Specify("Creating a plan doesn't overwrite an existing array if fftw.Estimate is used.", func() {
		for i := range signal {
			for j := range signal[i] {
				for k := range signal[i][j] {
					c.Expect(signal[i][j][k], gospec.Equals, complex(float64(i+j+k), float64(-i-j-k)))
				}
			}
		}
	})

	// As long as fx < dx/2, fy < dy/2, and fz < dz/2, where dx,dy,dz  are the lengths in
	// each dimension, there will be 2^n spikes, where n is the number of dimensions.
	// Each spike will be real and have magnitude equal to dx*dy*dz / 2^n
	dx := len(signal)
	fx := float64(dx) / 4
	dy := len(signal[0])
	fy := float64(dy) / 4
	dz := len(signal[0][0])
	fz := float64(dz) / 4
	for i := range signal {
		for j := range signal[i] {
			for k := range signal[i][j] {
				cosx := math.Cos(float64(i) / float64(dx) * fx * math.Pi * 2)
				cosy := math.Cos(float64(j) / float64(dy) * fy * math.Pi * 2)
				cosz := math.Cos(float64(k) / float64(dz) * fz * math.Pi * 2)
				signal[i][j][k] = complex(cosx*cosy*cosz, 0)
			}
		}
	}
	forward.Execute()
	c.Specify("Forward 3d FFT works properly.", func() {
		for i := range signal {
			for j := range signal[i] {
				for k := range signal[i][j] {
					if (i == int(fx) || i == dx-int(fx)) &&
						(j == int(fy) || j == dy-int(fy)) &&
						(k == int(fz) || k == dz-int(fz)) {
						c.Expect(real(signal[i][j][k]), gospec.IsWithin(1e-7), float64(dx*dy*dz/8))
						c.Expect(imag(signal[i][j][k]), gospec.IsWithin(1e-7), 0.0)
					} else {
						c.Expect(real(signal[i][j][k]), gospec.IsWithin(1e-7), 0.0)
						c.Expect(imag(signal[i][j][k]), gospec.IsWithin(1e-7), 0.0)
					}
				}
			}
		}
	})
}
예제 #30
0
// Helpers
func RedisClientInterfaceSpecs(c gospec.Context) {
	c.Specify("[RedisClientInterface] RedisConnection satisfies RedisClientInterface", func() {
		connection := &RedisConnection{}

		// Wont' compile unless it implements the interface
		var redis_interface RedisClientInterface = connection
		c.Expect(redis_interface, gospec.Satisfies, true)
	})

	c.Specify("[RedisClientInterface] redis.Client satisfies RedisClientInterface", func() {
		client := &redis.Client{}

		// Wont' compile unless it implements the interface
		var redis_interface RedisClientInterface = client
		c.Expect(redis_interface, gospec.Satisfies, true)
	})
}