vole
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A free and open-source forge that lives in your Git repo.
Merge change request 01M70WES5ZZDJ6RP226WB11BBZ: Let people rename and remove their own passkeys
keenan · 53m ago
4b8c9e1d
| 1 | package git |
| 2 | |
| 3 | // The merge check is the one thing a reviewer needs that a diff cannot answer: |
| 4 | // a branch can look right line by line and still refuse to merge. These tests pin |
| 5 | // the two shapes (clean, conflicted) and the parse, which is the part that would |
| 6 | // silently pass a broken branch if it were wrong. |
| 7 | |
| 8 | import ( |
| 9 | "os" |
| 10 | "os/exec" |
| 11 | "path/filepath" |
| 12 | "strings" |
| 13 | "testing" |
| 14 | ) |
| 15 | |
| 16 | // conflictRepo builds main and a side branch that both change the middle line of |
| 17 | // one file, so merging them conflicts, plus a second branch that touches a |
| 18 | // different file so a clean merge can be asked for too. |
| 19 | func conflictRepo(t *testing.T) string { |
| 20 | t.Helper() |
| 21 | dir := t.TempDir() |
| 22 | run := func(args ...string) { |
| 23 | t.Helper() |
| 24 | cmd := exec.Command("git", args...) |
| 25 | cmd.Dir = dir |
| 26 | cmd.Env = append(os.Environ(), |
| 27 | "GIT_CONFIG_GLOBAL=/dev/null", "GIT_CONFIG_SYSTEM=/dev/null", |
| 28 | "GIT_AUTHOR_NAME=t", "GIT_AUTHOR_EMAIL=t@example.com", |
| 29 | "GIT_COMMITTER_NAME=t", "GIT_COMMITTER_EMAIL=t@example.com") |
| 30 | if out, err := cmd.CombinedOutput(); err != nil { |
| 31 | t.Fatalf("git %s: %v: %s", strings.Join(args, " "), err, out) |
| 32 | } |
| 33 | } |
| 34 | write := func(name, body string) { |
| 35 | t.Helper() |
| 36 | if err := os.WriteFile(filepath.Join(dir, name), []byte(body), 0o644); err != nil { |
| 37 | t.Fatal(err) |
| 38 | } |
| 39 | } |
| 40 | run("init", "-q", "-b", "main") |
| 41 | write("f.txt", "a\nb\nc\n") |
| 42 | write("g.txt", "x\n") |
| 43 | run("add", "-A") |
| 44 | run("commit", "-qm", "base") |
| 45 | |
| 46 | run("switch", "-q", "-c", "side") |
| 47 | write("f.txt", "a\nSIDE\nc\n") |
| 48 | run("commit", "-qam", "side changes the middle") |
| 49 | |
| 50 | run("switch", "-q", "main") |
| 51 | write("f.txt", "a\nMAIN\nc\n") |
| 52 | write("g.txt", "x\ny\n") |
| 53 | run("add", "-A") |
| 54 | run("commit", "-qm", "main changes the middle too") |
| 55 | |
| 56 | run("switch", "-q", "-c", "elsewhere", "main") |
| 57 | write("g.txt", "x\nz\n") |
| 58 | run("commit", "-qam", "elsewhere touches another file") |
| 59 | run("switch", "-q", "main") |
| 60 | return dir |
| 61 | } |
| 62 | |
| 63 | func TestMergeConflictsNamesThePaths(t *testing.T) { |
| 64 | r := open(t, conflictRepo(t)) |
| 65 | paths, err := r.MergeConflicts("main", "side") |
| 66 | if err != nil { |
| 67 | t.Fatalf("MergeConflicts: %v", err) |
| 68 | } |
| 69 | if len(paths) != 1 || paths[0] != "f.txt" { |
| 70 | t.Fatalf("conflicts = %v, want [f.txt]", paths) |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | func TestMergeConflictsIsEmptyWhenItWouldLand(t *testing.T) { |
| 75 | r := open(t, conflictRepo(t)) |
| 76 | paths, err := r.MergeConflicts("main", "elsewhere") |
| 77 | if err != nil { |
| 78 | t.Fatalf("MergeConflicts: %v", err) |
| 79 | } |
| 80 | if len(paths) != 0 { |
| 81 | t.Fatalf("a clean merge reported conflicts: %v", paths) |
| 82 | } |
| 83 | // Merging a branch into itself is the trivial case and must stay clean. |
| 84 | if paths, err := r.MergeConflicts("main", "main"); err != nil || len(paths) != 0 { |
| 85 | t.Fatalf("self-merge: %v %v", paths, err) |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | // TestMergeConflictsReportsAnUnaskableQuestion: an unknown revision is an error, |
| 90 | // not "no conflicts". A page that treated it as clean would vouch for a branch it |
| 91 | // never checked. |
| 92 | func TestMergeConflictsReportsAnUnaskableQuestion(t *testing.T) { |
| 93 | r := open(t, conflictRepo(t)) |
| 94 | if _, err := r.MergeConflicts("main", "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef"); err == nil { |
| 95 | t.Fatal("an unknown revision was reported as no conflicts") |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // TestParseMergeTree covers the output shapes merge-tree can produce, including |
| 100 | // the informational section that follows the paths when messages are enabled. |
| 101 | func TestParseMergeTree(t *testing.T) { |
| 102 | cases := []struct { |
| 103 | name string |
| 104 | out string |
| 105 | want []string |
| 106 | }{ |
| 107 | {"clean", "904a7da1538496ad28d0611296e5bcf7bb0cbe58\n", nil}, |
| 108 | {"empty", "", nil}, |
| 109 | {"one path", "baadc1af8cd4fcf7d36031de2001ae4346cfacc5\nf.txt\n", []string{"f.txt"}}, |
| 110 | {"two paths", "tree-oid\na.txt\nb.txt\n", []string{"a.txt", "b.txt"}}, |
| 111 | {"messages after a blank line", "tree-oid\nf.txt\n\nAuto-merging f.txt\nCONFLICT (content): Merge conflict in f.txt\n", []string{"f.txt"}}, |
| 112 | } |
| 113 | for _, c := range cases { |
| 114 | got := parseMergeTree(c.out) |
| 115 | if len(got) != len(c.want) { |
| 116 | t.Fatalf("%s: %v, want %v", c.name, got, c.want) |
| 117 | } |
| 118 | for i := range got { |
| 119 | if got[i] != c.want[i] { |
| 120 | t.Fatalf("%s: %v, want %v", c.name, got, c.want) |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 |