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package lsp
import (
"encoding/json"
"testing"
)
func TestStripDuplicateGeneralPrefix_ExactOverlap(t *testing.T) {
prefix := "func New "
sugg := "func New() *CustData"
got := stripDuplicateGeneralPrefix(prefix, sugg)
// We expect the already typed prefix to be removed from the suggestion.
if got == sugg {
t.Fatalf("expected duplicate prefix to be stripped; got unchanged: %q", got)
}
if got != "() *CustData" {
t.Fatalf("got %q want %q", got, "() *CustData")
}
}
func TestStripDuplicateGeneralPrefix_TokenBoundarySuffix(t *testing.T) {
prefix := "db."
sugg := "db.Query()"
got := stripDuplicateGeneralPrefix(prefix, sugg)
if got != "Query()" {
t.Fatalf("got %q want %q", got, "Query()")
}
}
func TestStripDuplicateAssignmentPrefix_AssignAndWalrus(t *testing.T) {
// walrus
if out := stripDuplicateAssignmentPrefix("name := ", "name := compute()" ); out != "compute()" {
t.Fatalf(":= expected compute(), got %q", out)
}
// equals
if out := stripDuplicateAssignmentPrefix("x = ", "x = y+1" ); out != "y+1" {
t.Fatalf("= expected y+1, got %q", out)
}
}
func TestTryLLMCompletion_ManualInvokeAfterWhitespace_Allows(t *testing.T) {
s := &Server{ maxTokens: 32, triggerChars: []string{".", ":", "/", "_"}, compCache: make(map[string]string) }
s.llmClient = fakeLLM{resp: "() *CustData"}
line := "func fib(i int) " // cursor after space
p := CompletionParams{ Position: Position{ Line: 0, Character: len(line) }, TextDocument: TextDocumentIdentifier{URI: "file://x.go"} }
// Simulate manual user invocation (TriggerKind=1)
p.Context = json.RawMessage([]byte(`{"triggerKind":1}`))
items, ok, busy := s.tryLLMCompletion(p, "", line, "", "", "", false, "")
if busy { t.Fatalf("unexpected busy=true") }
if !ok { t.Fatalf("expected ok=true for manual invoke after whitespace") }
if len(items) == 0 { t.Fatalf("expected at least one completion item") }
}
func TestTryLLMCompletion_InlineSemicolonPromptAlwaysTriggers(t *testing.T) {
s := &Server{ maxTokens: 32, triggerChars: []string{".", ":", "/", "_"}, compCache: make(map[string]string) }
s.llmClient = fakeLLM{resp: "replacement"}
line := "prefix ;do something; suffix"
// No trigger char immediately before cursor; place cursor at end
p := CompletionParams{ Position: Position{ Line: 0, Character: len(line) }, TextDocument: TextDocumentIdentifier{URI: "file://inline.go"} }
items, ok, busy := s.tryLLMCompletion(p, "", line, "", "", "", false, "")
if busy { t.Fatalf("unexpected busy=true") }
if !ok || len(items) == 0 { t.Fatalf("expected completion to trigger on inline ;text; prompt") }
}
func TestTryLLMCompletion_DoubleSemicolonEmpty_DoesNotAutoTrigger(t *testing.T) {
s := &Server{ maxTokens: 32, triggerChars: []string{".", ":", "/", "_"}, compCache: make(map[string]string) }
fake := &countingLLM{}
s.llmClient = fake
line := ";; " // empty content after ';;' should not force-trigger
p := CompletionParams{ Position: Position{ Line: 0, Character: len(line) }, TextDocument: TextDocumentIdentifier{URI: "file://empty-inline.go"} }
items, ok, _ := s.tryLLMCompletion(p, "", line, "", "", "", false, "")
if !ok { t.Fatalf("expected ok=true for non-trigger path") }
if len(items) != 0 { t.Fatalf("expected no items when inline ';;' is empty") }
if fake.calls != 0 { t.Fatalf("LLM should not be called; calls=%d", fake.calls) }
}
func TestHasDoubleSemicolonTrigger_Variants(t *testing.T) {
if hasDoubleSemicolonTrigger(";;") { t.Fatalf("bare ';;' should not trigger") }
if hasDoubleSemicolonTrigger(";; ;") { t.Fatalf("';;' followed by space should not trigger") }
if hasDoubleSemicolonTrigger(";;;") { t.Fatalf("';;;' should not trigger (no content)") }
if !hasDoubleSemicolonTrigger(";;x;") { t.Fatalf("expected trigger for ';;x;' pattern") }
}
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