1package patchbin
 2
 3import (
 4	"bytes"
 5	"html/template"
 6	"testing"
 7)
 8
 9func TestPatchFileTemplateRendersLineDiffOnly(t *testing.T) {
10	files, _, err := ParsePatch(sampleDiff)
11	if err != nil {
12		t.Fatalf("ParsePatch: %v", err)
13	}
14
15	semanticChanges := AnalyzeSemanticChanges(files[0])
16	for i := range semanticChanges {
17		semanticChanges[i].HunkAnchor = hunkAnchor(1, "foo.go", semanticChanges[i].HunkIndex)
18	}
19
20	hunks := make([]PatchHunk, 0, len(files[0].TextFragments))
21	for i, frag := range files[0].TextFragments {
22		hunks = append(hunks, PatchHunk{
23			Anchor:   hunkAnchor(1, "foo.go", i),
24			DiffText: template.HTML(frag.String()),
25		})
26	}
27
28	pf := &PatchFile{
29		File:            files[0],
30		DisplayName:     "foo.go",
31		FileAnchor:      "patch-1-foo.go",
32		Adds:            5,
33		Dels:            2,
34		Hunks:           hunks,
35		SemanticChanges: semanticChanges,
36	}
37
38	tmpl := getTemplate("pr.html")
39	if tmpl == nil {
40		t.Fatalf("getTemplate returned nil")
41	}
42
43	patchFileTmpl := tmpl.Lookup("patch-file")
44	if patchFileTmpl == nil {
45		t.Fatalf("patch-file template not found")
46	}
47
48	var buf bytes.Buffer
49	if err := patchFileTmpl.Execute(&buf, pf); err != nil {
50		t.Fatalf("execute: %v", err)
51	}
52
53	out := buf.String()
54	t.Logf("rendered output:\n%s", out)
55
56	// Per-file details should be pure line-diff now -- the semantic
57	// breakdown lives only in the patch-level summary, so repeating it
58	// here would be redundant.
59	if bytes.Contains(buf.Bytes(), []byte("semantic-diff")) {
60		t.Errorf("expected no semantic-diff content inside patch-file, semantic breakdown belongs in the summary only")
61	}
62	if bytes.Contains(buf.Bytes(), []byte("Show line diff")) {
63		t.Errorf("expected no nested line-diff details, file details should be a flat line-diff")
64	}
65	if !bytes.Contains(buf.Bytes(), []byte("patch-1-foo.go-hunk-0")) {
66		t.Errorf("expected hunk anchor in rendered line diff")
67	}
68}