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Copy pathcomponent_feat_component_model_test.go
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162 lines (148 loc) · 3.83 KB
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package wasmtime
import (
"os"
"testing"
"github.com/stretchr/testify/require"
)
// helloComponent is the canonical "smallest non-trivial component" used by
// the Component-focused tests in this file: a single `hello` function with
// no arguments or results. Other test files define their own minimal
// fixtures with file-specific names rather than reaching across files for
// this constant.
const helloComponent = `
(component
(core module $m (func (export "hello")))
(core instance $i (instantiate $m))
(func (export "hello") (canon lift (core func $i "hello"))))
`
func TestComponentNew(t *testing.T) {
helloWasm, err := Wat2Wasm(helloComponent)
require.NoError(t, err)
cases := []struct {
name string
input []byte
wantErr bool
}{
{"empty", []byte{}, true},
{"garbage", []byte{1, 2, 3}, true},
{"valid", helloWasm, false},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
engine := newComponentEngine()
component, err := NewComponent(engine, tc.input)
if tc.wantErr {
require.Error(t, err)
return
}
require.NoError(t, err)
require.NotNil(t, component)
component.Close()
})
}
}
func TestComponentSerializeRoundTripBytes(t *testing.T) {
cases := []struct {
name string
wat string
wantExportName string
}{
{
"hello_export",
`(component
(core module $m (func (export "hello")))
(core instance $i (instantiate $m))
(func (export "hello") (canon lift (core func $i "hello"))))`,
"hello",
},
{
"world_export",
`(component
(core module $m (func (export "world")))
(core instance $i (instantiate $m))
(func (export "world") (canon lift (core func $i "world"))))`,
"world",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
engine := newComponentEngine()
component := newComponent(t, engine, tc.wat)
defer component.Close()
bytes, err := component.Serialize()
require.NoError(t, err)
require.NotEmpty(t, bytes)
round, err := NewComponentDeserialize(engine, bytes)
require.NoError(t, err)
defer round.Close()
require.NotNil(t, round.GetExportIndex(nil, tc.wantExportName))
})
}
}
func TestComponentSerializeRoundTripFile(t *testing.T) {
cases := []struct {
name string
wat string
wantExportName string
}{
{
"hello_export",
`(component
(core module $m (func (export "hello")))
(core instance $i (instantiate $m))
(func (export "hello") (canon lift (core func $i "hello"))))`,
"hello",
},
{
"world_export",
`(component
(core module $m (func (export "world")))
(core instance $i (instantiate $m))
(func (export "world") (canon lift (core func $i "world"))))`,
"world",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
engine := newComponentEngine()
component := newComponent(t, engine, tc.wat)
defer component.Close()
bytes, err := component.Serialize()
require.NoError(t, err)
tmp, err := os.CreateTemp("", "component-serialize")
require.NoError(t, err)
defer os.Remove(tmp.Name())
_, err = tmp.Write(bytes)
require.NoError(t, err)
require.NoError(t, tmp.Close())
round, err := NewComponentDeserializeFile(engine, tmp.Name())
require.NoError(t, err)
defer round.Close()
require.NotNil(t, round.GetExportIndex(nil, tc.wantExportName))
})
}
}
func TestComponentGetExportIndex(t *testing.T) {
engine := newComponentEngine()
component := newComponent(t, engine, helloComponent)
defer component.Close()
cases := []struct {
name string
target string
wantFound bool
}{
{"existing", "hello", true},
{"missing", "nope", false},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
idx := component.GetExportIndex(nil, tc.target)
if tc.wantFound {
require.NotNil(t, idx)
idx.Close()
} else {
require.Nil(t, idx)
}
})
}
}