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path: root/internal/lsp/provider_native_success_test.go
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package lsp

import (
	"context"
	"testing"

	"codeberg.org/snonux/hexai/internal/llm"
)

type fakeCompleterOk struct{}

func (fakeCompleterOk) Chat(context.Context, []llm.Message, ...llm.RequestOption) (string, error) {
	return "", nil
}
func (fakeCompleterOk) Name() string         { return "prov" }
func (fakeCompleterOk) DefaultModel() string { return "m" }
func (fakeCompleterOk) CodeCompletion(context.Context, string, string, int, string, float64) ([]string, error) {
	return []string{"SUGG"}, nil
}

func TestProviderNativeCompletion_Success(t *testing.T) {
	s := newTestServer()
	s.llmClient = fakeCompleterOk{}
	// current line with dot trigger; position after dot
	current := "fmt."
	p := CompletionParams{TextDocument: TextDocumentIdentifier{URI: "file:///x.go"}, Position: Position{Line: 0, Character: len(current)}}
	items, ok := s.tryProviderNativeCompletion(current, p, "", "", "func f(){}", "doc", false, "", false)
	if !ok || len(items) == 0 {
		t.Fatalf("expected provider-native items")
	}
	if items[0].Label == "" || items[0].TextEdit == nil {
		t.Fatalf("unexpected completion item: %+v", items[0])
	}
}

type fakeCompleterIndent struct{}

func (fakeCompleterIndent) Chat(context.Context, []llm.Message, ...llm.RequestOption) (string, error) {
	return "", nil
}
func (fakeCompleterIndent) Name() string         { return "prov" }
func (fakeCompleterIndent) DefaultModel() string { return "m" }
func (fakeCompleterIndent) CodeCompletion(context.Context, string, string, int, string, float64) ([]string, error) {
	return []string{"a\nb"}, nil
}

func TestProviderNativeCompletion_IndentWithDoubleOpen(t *testing.T) {
	s := newTestServer()
	s.llmClient = fakeCompleterIndent{}
	current := "  >>do>" // leading indent + double-open marker
	p := CompletionParams{TextDocument: TextDocumentIdentifier{URI: "file:///x.go"}, Position: Position{Line: 0, Character: len(current)}}
	items, ok := s.tryProviderNativeCompletion(current, p, "", "", "func f(){}", "doc", false, "", false)
	if !ok || len(items) == 0 {
		t.Fatalf("expected provider-native items")
	}
	if items[0].TextEdit == nil {
		t.Fatalf("expected text edit")
	}
	if got := items[0].TextEdit.NewText; len(got) < 2 || got[:2] != "  " {
		t.Fatalf("expected indentation applied, got %q", got)
	}
}