Files
lukaszraczylo 9af2801b1b refactor(edit): remove auto-indentation and add line-ending normalization
- [x] Remove auto-indentation from text mode edits (caller controls whitespace)
- [x] Add line-ending detection and normalization for both AST and text modes
- [x] Share edit logic via new `spliceContent` function for both modes
- [x] Fix diff to emit "No newline at end of file" markers
- [x] Fix diff to strip raw CR from CRLF file output
- [x] Remove double-unescape of backslash sequences in new_content
- [x] Fix countDiffLines to be hunk-aware (correctly count lines starting with +/-)
- [x] Fix block-comment stripping to remove standalone lines cleanly
- [x] Fix Python license header stripping to preserve separator blank lines
2026-05-29 00:17:36 +01:00

104 lines
3.4 KiB
Go

package server
import (
"context"
"os"
"strings"
"testing"
"github.com/mark3labs/mcp-go/mcp"
)
// callEdit invokes handleEditApply with the given args and returns the result.
func callEdit(t *testing.T, srv *Server, args map[string]any) *mcp.CallToolResult {
t.Helper()
req := mcp.CallToolRequest{}
req.Params.Arguments = args
res, err := srv.handleEditApply(context.Background(), req)
if err != nil {
t.Fatalf("handleEditApply error: %v", err)
}
if res == nil {
t.Fatal("handleEditApply returned nil result")
}
return res
}
// TestEditApplyPreservesBackslashSequencesText is the primary regression guard for the
// double-unescape bug: new_content arrives from the JSON-RPC layer already fully decoded,
// so the handler must write it to disk verbatim. Literal backslash sequences (\n, \t, \",
// \\) that legitimately appear in source code must survive byte-for-byte.
func TestEditApplyPreservesBackslashSequencesText(t *testing.T) {
tmpDir := t.TempDir()
srv := newTestServer(t, tmpDir)
f := writeFile(t, tmpDir, "note.txt", "PLACEHOLDER\n")
// Exactly the bytes a client intends after JSON decoding: backslash sequences are
// real source text here, NOT escapes to be interpreted.
newContent := `printf("a\nb\tc"); re = \d+; path = "C:\\tmp"; q = \"`
res := callEdit(t, srv, map[string]any{
"file": f,
"operation": "replace",
"selector_text": "PLACEHOLDER",
"new_content": newContent,
"response": "none",
})
if res.IsError {
t.Fatalf("edit returned error: %+v", res.Content)
}
got, err := os.ReadFile(f)
if err != nil {
t.Fatalf("read back: %v", err)
}
want := newContent + "\n"
if string(got) != want {
t.Fatalf("new_content not written verbatim (double-unescape regression).\nwant: %q\ngot: %q", want, string(got))
}
}
// TestCountDiffLinesHunkAware verifies the line counter skips file headers structurally and
// counts content lines whose own text begins with + or - (previously dropped as "+++"/"---").
func TestCountDiffLinesHunkAware(t *testing.T) {
diff := "--- a.txt\n+++ a.txt\n@@ -1,3 +1,3 @@\n context\n+++plusprefix\n+normal add\n---minusprefix\n-normal del\n"
added, removed := countDiffLines(diff)
if added != 2 || removed != 2 {
t.Fatalf("hunk-aware diff count wrong: added=%d removed=%d (want 2 and 2)", added, removed)
}
}
// TestEditApplyPreservesBackslashSequencesCode covers the AST/code path: the same verbatim
// guarantee must hold for syntactically-validated code files.
func TestEditApplyPreservesBackslashSequencesCode(t *testing.T) {
tmpDir := t.TempDir()
srv := newTestServer(t, tmpDir)
src := "package main\n\nfunc demo() {\n\tprintln(\"old\")\n}\n"
f := writeFile(t, tmpDir, "demo.go", src)
// Real tab indentation + literal backslash sequences inside string/raw-string literals.
newBody := "func demo() {\n\tprintln(\"a\\nb\\tc\")\n\t_ = `\\d+`\n\t_ = \"C:\\\\tmp\"\n}"
res := callEdit(t, srv, map[string]any{
"file": f,
"operation": "replace",
"selector_kind": "function_declaration",
"selector_name": "demo",
"new_content": newBody,
"response": "none",
})
if res.IsError {
t.Fatalf("edit returned error: %+v", res.Content)
}
got, err := os.ReadFile(f)
if err != nil {
t.Fatalf("read back: %v", err)
}
if !strings.Contains(string(got), newBody) {
t.Fatalf("backslash sequences corrupted in code edit.\nwant substring:\n%q\ngot file:\n%q", newBody, string(got))
}
}