Files
extism/extism_test.go
zach ddcbeec3de refactor!: Remove context, unify extism-runtime and extism crates (#421)
- Removes the `ExtismContext` type from runtime and all SDKs
- Removed SDK functions: `extism_context_new`, `extism_context_reset`,
`extism_context_free`
  - All SDKs have been updated, but there are still some TODOs below 
- Removes `extism_plugin_update`
- Plugins can no longer be updated - a new plugin should be created
instead
- Adds `extism_plugin_id` to uniquely identify plugins
- Merges the `extism-runtime` and `extism` crates (there is no longer an
`extism-runtime` crate)
- Makes `extism::Manifest` an alias for `extism_manifest::Manifest`
instead of a distinct type
- Adds `MemoryHandle` type to SDKs to refer to blocks of Extism memory
that can be accessed in host functions
- Improves thread-safety of Plugins, adds C++ test to call a single
plugin from multiple threads.
- Expands wasmtime bounds to include 12.0
2023-08-29 13:57:17 -07:00

124 lines
2.5 KiB
Go

package extism
import (
"encoding/json"
"fmt"
"testing"
"time"
)
func manifest(functions bool) Manifest {
path := "./wasm/code.wasm"
if functions {
path = "./wasm/code-functions.wasm"
}
return Manifest{
Wasm: []Wasm{
WasmFile{
Path: path,
},
},
}
}
func expectVowelCount(plugin Plugin, input string, count int) error {
out, err := plugin.Call("count_vowels", []byte(input))
if err != nil {
return err
}
var result map[string]int
json.Unmarshal(out, &result)
if result["count"] != count {
return fmt.Errorf("Got count %d but expected %d", result["count"], count)
}
return nil
}
func TestCallPlugin(t *testing.T) {
plugin, err := NewPluginFromManifest(manifest(false), []Function{}, false)
if err != nil {
t.Error(err)
}
if err := expectVowelCount(plugin, "this is a test", 4); err != nil {
t.Error(err)
}
if err := expectVowelCount(plugin, "this is a test again", 7); err != nil {
t.Error(err)
}
if err := expectVowelCount(plugin, "this is a test thrice", 6); err != nil {
t.Error(err)
}
}
func TestFreePlugin(t *testing.T) {
plugin, err := NewPluginFromManifest(manifest(false), []Function{}, false)
if err != nil {
t.Error(err)
}
if err := expectVowelCount(plugin, "this is a test", 4); err != nil {
t.Error(err)
}
// free this specific plugin
plugin.Free()
if err := expectVowelCount(plugin, "this is a test", 4); err == nil {
t.Fatal("Expected an error after plugin was freed")
}
}
func TestFunctionExists(t *testing.T) {
plugin, err := NewPluginFromManifest(manifest(false), []Function{}, false)
if err != nil {
t.Error(err)
}
if !plugin.FunctionExists("count_vowels") {
t.Fatal("Was expecting to find the function count_vowels")
}
if plugin.FunctionExists("i_dont_exist") {
t.Fatal("Was not expecting to find the function i_dont_exist")
}
}
func TestErrorsOnUnknownFunction(t *testing.T) {
plugin, err := NewPluginFromManifest(manifest(false), []Function{}, false)
if err != nil {
t.Error(err)
}
_, err = plugin.Call("i_dont_exist", []byte("someinput"))
if err == nil {
t.Fatal("Was expecting call to unknown function to fail")
}
}
func TestCancel(t *testing.T) {
manifest := Manifest{
Wasm: []Wasm{
WasmFile{
Path: "./wasm/loop.wasm",
},
},
}
plugin, err := NewPluginFromManifest(manifest, []Function{}, false)
if err != nil {
t.Error(err)
}
cancelHandle := plugin.CancelHandle()
go func(handle CancelHandle) {
time.Sleep(time.Second * 1)
handle.Cancel()
}(cancelHandle)
_, err = plugin.Call("infinite_loop", []byte(""))
if err == nil {
t.Fail()
}
}