ginger/gg/decoder_test.go

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package gg
import (
"strconv"
"testing"
"github.com/stretchr/testify/assert"
"github.com/mediocregopher/ginger/graph"
)
func TestDecoder(t *testing.T) {
zeroGraph := new(Graph)
i := func(i int64) Value {
return Value{Number: &i}
}
n := func(n string) Value {
return Value{Name: &n}
}
vOut := func(edgeVal, val Value) *OpenEdge {
return graph.ValueOut(edgeVal, val)
}
tOut := func(edgeVal Value, ins ...*OpenEdge) *OpenEdge {
return graph.TupleOut(edgeVal, ins...)
}
tests := []struct {
in string
exp *Graph
}{
{
in: "",
exp: zeroGraph,
},
{
in: "out = 1;",
exp: zeroGraph.AddValueIn(n("out"), vOut(ZeroValue, i(1))),
},
{
in: "out = incr < 1;",
exp: zeroGraph.AddValueIn(n("out"), vOut(n("incr"), i(1))),
},
{
in: "out = a < b < 1;",
exp: zeroGraph.AddValueIn(
n("out"),
tOut(
n("a"),
vOut(n("b"),
i(1)),
),
),
},
{
in: "out = a < b < (1; c < 2; d < e < 3;);",
exp: zeroGraph.AddValueIn(
n("out"),
tOut(
n("a"),
tOut(
n("b"),
vOut(ZeroValue, i(1)),
vOut(n("c"), i(2)),
tOut(
n("d"),
vOut(n("e"), i(3)),
),
),
),
),
},
{
in: "out = a < b < (1; c < (d < 2; 3;); );",
exp: zeroGraph.AddValueIn(
n("out"),
tOut(
n("a"),
tOut(
n("b"),
vOut(ZeroValue, i(1)),
tOut(
n("c"),
vOut(n("d"), i(2)),
vOut(ZeroValue, i(3)),
),
),
),
),
},
{
in: "out = { a = 1; b = c < d < 2; };",
exp: zeroGraph.AddValueIn(
n("out"),
vOut(
ZeroValue,
Value{Graph: zeroGraph.
AddValueIn(n("a"), vOut(ZeroValue, i(1))).
AddValueIn(
n("b"),
tOut(
n("c"),
vOut(n("d"), i(2)),
),
),
},
),
),
},
{
in: "out = a < { b = 1; } < 2;",
exp: zeroGraph.AddValueIn(
n("out"),
tOut(
n("a"),
vOut(
Value{Graph: zeroGraph.
AddValueIn(n("b"), vOut(ZeroValue, i(1))),
},
i(2),
),
),
),
},
{
in: "a = 1; b = 2;",
exp: zeroGraph.
AddValueIn(n("a"), vOut(ZeroValue, i(1))).
AddValueIn(n("b"), vOut(ZeroValue, i(2))),
},
}
for i, test := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
r := &mockReader{body: []byte(test.in)}
lexer := NewLexer(r)
got, err := DecodeLexer(lexer)
assert.NoError(t, err)
assert.True(t, got.Equal(test.exp), "\nexp:%v\ngot:%v", test.exp, got)
})
}
}