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package lsp
import (
"bytes"
"encoding/json"
"io"
"log"
"testing"
)
func TestHandleInitialize_Capabilities(t *testing.T) {
var out bytes.Buffer
s := newTestServer()
s.logger = log.New(io.Discard, "", 0)
s.out = &out
cfg := s.cfg
cfg.TriggerCharacters = []string{".", ":"}
s.cfg = cfg
req := Request{JSONRPC: "2.0", ID: json.RawMessage("7"), Method: "initialize"}
out.Reset()
s.handleInitialize(req)
resp := captureResponse(t, &out)
var init InitializeResult
b, _ := json.Marshal(resp.Result)
if err := json.Unmarshal(b, &init); err != nil {
t.Fatalf("decode init: %v", err)
}
if init.Capabilities.CodeActionProvider == nil {
t.Fatalf("expected codeActionProvider")
}
// CodeActionProvider is any; re-marshal to struct
var cap struct {
ResolveProvider bool `json:"resolveProvider"`
}
cb, _ := json.Marshal(init.Capabilities.CodeActionProvider)
_ = json.Unmarshal(cb, &cap)
if !cap.ResolveProvider {
t.Fatalf("expected resolveProvider=true")
}
if init.Capabilities.CompletionProvider == nil || len(init.Capabilities.CompletionProvider.TriggerCharacters) == 0 {
t.Fatalf("expected trigger characters")
}
}
func TestIsTriggerEvent_Variants(t *testing.T) {
s := newTestServer()
cfg := s.cfg
cfg.TriggerCharacters = []string{".", ":"}
s.cfg = cfg
// 1) Manual invoke via context
ctx := struct {
TriggerKind int `json:"triggerKind"`
}{TriggerKind: 1}
raw, _ := json.Marshal(ctx)
p := CompletionParams{Position: Position{Line: 0, Character: 1}, Context: json.RawMessage(raw)}
if !s.isTriggerEvent(p, "a") {
t.Fatalf("manual invoke should trigger")
}
// 2) TriggerCharacter present and allowed
ctx2 := struct {
TriggerKind int `json:"triggerKind"`
TriggerCharacter string `json:"triggerCharacter"`
}{TriggerKind: 2, TriggerCharacter: "."}
raw2, _ := json.Marshal(ctx2)
p2 := CompletionParams{Position: Position{Line: 0, Character: 1}, Context: json.RawMessage(raw2)}
if !s.isTriggerEvent(p2, "a.") {
t.Fatalf("trigger char should trigger")
}
// 3) Fallback char left of cursor
p3 := CompletionParams{Position: Position{Line: 0, Character: 3}}
if !s.isTriggerEvent(p3, "ab:") {
t.Fatalf("fallback char should trigger")
}
// 4) Bare double-open disables trigger
p4 := CompletionParams{Position: Position{Line: 0, Character: 2}}
if s.isTriggerEvent(p4, ">>") {
t.Fatalf("bare double-open should not trigger")
}
}
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