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value_test.go
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value_test.go
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package birch
import (
"encoding/binary"
"math"
"testing"
"github.com/tychoish/birch/bsonerr"
"github.com/tychoish/birch/bsontype"
)
func TestValue(t *testing.T) {
t.Run("panic", func(t *testing.T) {
handle := func(t *testing.T) {
t.Helper()
if got := recover(); got != bsonerr.UninitializedElement {
want := bsonerr.UninitializedElement
t.Errorf("Incorrect value for panic. got %s; want %s", got, want)
}
}
t.Run("type", func(t *testing.T) {
defer handle(t)
(*Value)(nil).Type()
})
t.Run("double", func(t *testing.T) {
defer handle(t)
(*Value)(nil).Double()
})
t.Run("string", func(t *testing.T) {
defer handle(t)
(*Value)(nil).StringValue()
})
t.Run("document", func(t *testing.T) {
defer handle(t)
(*Value)(nil).ReaderDocument()
})
})
t.Run("key", func(t *testing.T) {
buf := []byte{
'\x00', '\x00', '\x00', '\x00',
'\x02', 'f', 'o', 'o', '\x00',
'\x00', '\x00', '\x00', '\x00', '\x00',
'\x00'}
e := &Element{&Value{start: 4, offset: 9, data: buf}}
want := "foo"
got := e.Key()
if got != want {
t.Errorf("Unexpected result. got %s; want %s", got, want)
}
})
t.Run("type", func(t *testing.T) {
buf := []byte{
'\x00', '\x00', '\x00', '\x00',
'\x02', 'f', 'o', 'o', '\x00',
'\x00', '\x00', '\x00', '\x00', '\x00',
'\x00',
}
e := &Element{&Value{start: 4, offset: 9, data: buf}}
want := bsontype.String
got := e.value.Type()
if got != want {
t.Errorf("Unexpected result. got %v; want %v", got, want)
}
})
t.Run("double", func(t *testing.T) {
buf := []byte{
'\x00', '\x00', '\x00', '\x00',
'\x01', 'f', 'o', 'o', '\x00',
'\x00', '\x00', '\x00', '\x00',
'\x00', '\x00', '\x00', '\x00',
'\x00',
}
e := &Element{&Value{start: 4, offset: 9, data: buf}}
binary.LittleEndian.PutUint64(buf[9:17], math.Float64bits(3.14159))
want := 3.14159
got := e.value.Double()
if got != want {
t.Errorf("Unexpected result. got %f; want %f", got, want)
}
})
t.Run("string", func(t *testing.T) {
buf := []byte{
'\x00', '\x00', '\x00', '\x00',
'\x02', 'f', 'o', 'o', '\x00',
'\x00', '\x00', '\x00', '\x00',
'b', 'a', 'r', '\x00',
'\x00',
}
e := &Element{&Value{start: 4, offset: 9, data: buf}}
binary.LittleEndian.PutUint32(buf[9:13], 4)
want := "bar"
got := e.value.StringValue()
if got != want {
t.Errorf("Unexpected result. got %s; want %s", got, want)
}
})
t.Run("Equal", func(t *testing.T) {
codewithscopeval := func() *Value {
b, err := DC.Elements(
EC.CodeWithScope("cws", "var hello = 'world';",
DC.Elements(EC.Boolean("foo", true)),
)).MarshalBSON()
noerr(t, err)
elem, err := Reader(b).RecursiveLookup("cws")
noerr(t, err)
return elem.Value()
}
testCases := []struct {
name string
v1 *Value
v2 *Value
equal bool
}{
{"both nil", nil, nil, true},
{"v1 nil", nil, VC.Boolean(true), false},
{"v2 nil", VC.Boolean(true), nil, false},
{"different types", VC.String("foo"), VC.Boolean(true), false},
{
"both with d field equal",
VC.DocumentFromElements(EC.String("hello", "world")),
VC.DocumentFromElements(EC.String("hello", "world")),
true,
},
{
"both with d field not equal",
VC.DocumentFromElements(EC.String("hello", "world")),
VC.DocumentFromElements(EC.Boolean("foo", true)),
false,
},
{
"v1 invalid d field",
VC.Document(&Document{elems: []*Element{nil}}),
VC.Boolean(true),
false,
},
{
"v2 invalid d field",
VC.Boolean(true),
VC.Document(&Document{elems: []*Element{nil}}),
false,
},
{
"equal bytes",
VC.Boolean(true),
VC.Boolean(true),
true,
},
{
"equal document",
VC.DocumentFromReader(Reader{0x08, 0x00, 0x00, 0x00, 0x08, 0x00, 0x01, 0x00}),
VC.DocumentFromElements(EC.Boolean("", true)),
true,
},
{
"equal array",
VC.ArrayFromValues(VC.Boolean(true)),
&Value{
start: 0, offset: 2,
data: []byte{0x04, 0x00, 0x09, 0x00, 0x00, 0x00, 0x08, 0x30, 0x00, 0x01, 0x00},
},
true,
},
{
"equal code with scope",
VC.CodeWithScope("var hello = 'world';", DC.Elements(EC.Boolean("foo", true))),
codewithscopeval(),
true,
},
{
"v1 code with scope invalid d",
VC.CodeWithScope("var hello = 'world';", &Document{elems: []*Element{nil}}),
codewithscopeval(),
false,
},
{
"v2 code with scope invalid d",
codewithscopeval(),
VC.CodeWithScope("var hello = 'world';", &Document{elems: []*Element{nil}}),
false,
},
{
"unused d field",
VC.Boolean(true),
&Value{start: 0, offset: 2, data: []byte{0x08, 0x00, 0x01}, d: DC.Elements(EC.Undefined("val"))},
true,
},
{
"read JavaScript error",
&Value{
start: 0, offset: 2,
data: []byte{0x0F, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00}, d: DC.Elements(),
},
codewithscopeval(),
false,
},
}
for idx, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
equal := tc.v1.Equal(tc.v2)
if equal != tc.equal {
t.Errorf("test case #%d: Expected equality not satisfied. got=%t; want=%t", idx, equal, tc.equal)
t.Errorf("\nv1: %#v\nv2: %#v", tc.v1, tc.v2)
// spew.Dump(tc.v1, tc.v2)
}
})
}
})
}