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// Summary: Tests for LSP document model (line management, edits, and transformations).
package lsp
import (
"io"
"log"
"strings"
"testing"
)
func newTestServer() *Server {
return &Server{
logger: log.New(io.Discard, "", 0),
docs: make(map[string]*document),
}
}
func TestSplitLines(t *testing.T) {
in := "a\r\nb\nc"
got := splitLines(in)
want := []string{"a", "b", "c"}
if len(got) != len(want) {
t.Fatalf("len mismatch: got %d want %d", len(got), len(want))
}
for i := range want {
if got[i] != want[i] {
t.Fatalf("line %d: got %q want %q", i, got[i], want[i])
}
}
}
func TestLineContext(t *testing.T) {
s := newTestServer()
src := "package main\n\nfunc add(a, b int) int {\n\treturn a + b\n}\n"
uri := "file:///test.go"
s.setDocument(uri, src)
// Position on the return line (line 3, zero-based)
above, current, below, funcCtx := s.lineContext(uri, Position{Line: 3, Character: 0})
if want := "func add(a, b int) int {"; funcCtx != want {
t.Fatalf("funcCtx got %q want %q", funcCtx, want)
}
if want := "func add(a, b int) int {"; above != want {
t.Fatalf("above got %q want %q", above, want)
}
if want := "\treturn a + b"; current != want {
t.Fatalf("current got %q want %q", current, want)
}
if want := "}"; below != want {
t.Fatalf("below got %q want %q", below, want)
}
}
func TestLineContext_EmptyDoc(t *testing.T) {
s := newTestServer()
a, c, b, f := s.lineContext("file:///missing.go", Position{Line: 0, Character: 0})
if a != "" || b != "" || c != "" || f != "" {
t.Fatalf("expected all empty for missing doc; got above=%q current=%q below=%q func=%q", a, c, b, f)
}
}
func TestTrimLen(t *testing.T) {
long := strings.Repeat("a", 205)
got := trimLen(long)
want := strings.Repeat("a", 200) + "…"
if got != want {
t.Fatalf("trimLen got %q want %q", got, want)
}
}
func TestFirstLine(t *testing.T) {
s := "first line\r\nsecond line"
if got := firstLine(s); got != "first line" {
t.Fatalf("firstLine got %q want %q", got, "first line")
}
}
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