Function TestSetIterator

graph/graphtest/graphtest.go:627–712

(t testing.TB, gen testutil.DatabaseFunc, _ *Config)

}

func TestSetIterator(t testing.TB, gen testutil.DatabaseFunc, _ *Config) {
	qs, opts, closer := gen(t)
	defer closer()

	testutil.MakeWriter(t, qs, opts, MakeQuadSet()...)

	expectIteratedQuads := func(it graph.Iterator, exp []quad.Quad) {
		ExpectIteratedQuads(t, qs, it, exp, false)
	}

	// Subject iterator.
	it := qs.QuadIterator(quad.Subject, qs.ValueOf(quad.String("C")))

	expectIteratedQuads(it, []quad.Quad{
		quad.Make("C", "follows", "B", nil),
		quad.Make("C", "follows", "D", nil),
	})
	it.Reset()

	and := iterator.NewAnd(
		qs.QuadsAllIterator(),
		it,
	)

	expectIteratedQuads(and, []quad.Quad{
		quad.Make("C", "follows", "B", nil),
		quad.Make("C", "follows", "D", nil),
	})

	// Object iterator.
	it = qs.QuadIterator(quad.Object, qs.ValueOf(quad.String("F")))

	expectIteratedQuads(it, []quad.Quad{
		quad.Make("B", "follows", "F", nil),
		quad.Make("E", "follows", "F", nil),
	})

	and = iterator.NewAnd(
		qs.QuadIterator(quad.Subject, qs.ValueOf(quad.String("B"))),
		it,
	)

	expectIteratedQuads(and, []quad.Quad{
		quad.Make("B", "follows", "F", nil),
	})

	// Predicate iterator.
	it = qs.QuadIterator(quad.Predicate, qs.ValueOf(quad.String("status")))

	expectIteratedQuads(it, []quad.Quad{
		quad.Make("B", "status", "cool", "status_graph"),
		quad.Make("D", "status", "cool", "status_graph"),
		quad.Make("G", "status", "cool", "status_graph"),
	})

	// Label iterator.
	it = qs.QuadIterator(quad.Label, qs.ValueOf(quad.String("status_graph")))