mirror of
https://github.com/lukaszraczylo/harness-sync.git
synced 2026-10-12 00:45:22 +00:00
test(apply): cover symlinks, force, dry-run, merge, errors, state round-trip
This commit is contained in:
@@ -1,7 +1,9 @@
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package apply
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import (
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"errors"
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"os"
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"os/exec"
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"path/filepath"
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"testing"
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@@ -13,6 +15,18 @@ import (
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"github.com/lukaszraczylo/harness-sync/internal/gitx"
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)
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// failingAdapter always returns an error from Render.
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type failingAdapter struct{ name, msg string }
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func (f *failingAdapter) Name() string { return f.name }
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func (f *failingAdapter) Detect() bool { return true }
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func (f *failingAdapter) Render(_ *canonical.Bundle) (*adapter.FileSet, error) {
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return nil, errors.New(f.msg)
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}
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func (f *failingAdapter) Import(_ string) (*adapter.ImportResult, error) {
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return &adapter.ImportResult{}, nil
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}
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type stubAdapter struct {
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name string
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files []adapter.File
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@@ -31,6 +45,10 @@ func (s *stubAdapter) Render(_ *canonical.Bundle) (*adapter.FileSet, error) {
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return fs, nil
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}
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// ---------------------------------------------------------------------------
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// Existing tests
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// ---------------------------------------------------------------------------
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func TestApplyRenderedFileFreshWrite(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "out.json")
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@@ -56,8 +74,8 @@ func TestApplyRenderedFileFreshWrite(t *testing.T) {
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require.NoError(t, err)
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assert.Equal(t, "{}\n", string(body))
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statePath := filepath.Join(root, "state", "stub", target)
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assert.FileExists(t, statePath)
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sp := filepath.Join(root, "state", "stub", target)
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assert.FileExists(t, sp)
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}
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func TestApplyConflictWritesRej(t *testing.T) {
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@@ -98,6 +116,472 @@ func TestApplyConflictWritesRej(t *testing.T) {
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assert.FileExists(t, target+".rej")
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}
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// ---------------------------------------------------------------------------
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// TestApplySymlinkFileFreshLink — SymlinkFile kind creates a symlink.
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// ---------------------------------------------------------------------------
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func TestApplySymlinkFileFreshLink(t *testing.T) {
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root := t.TempDir()
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targetDir := t.TempDir()
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target := filepath.Join(targetDir, "link")
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real := filepath.Join(targetDir, "real.txt")
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require.NoError(t, os.WriteFile(real, []byte("hello\n"), 0o600))
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require.NoError(t, initCanonical(root))
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ad := &stubAdapter{
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name: "stub",
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files: []adapter.File{
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{Dest: target, Kind: adapter.SymlinkFile, SymlinkTarget: real},
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},
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}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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// No Repo: commit path covered by TestApplyCommitsToRepo; symlink target
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// lives outside the canonical root so git-add would fail anyway.
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})
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require.NoError(t, err)
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assert.Equal(t, 1, rep.Written)
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assert.Equal(t, 0, rep.Skipped)
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got, err := os.Readlink(target)
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require.NoError(t, err)
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assert.Equal(t, real, got)
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}
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// ---------------------------------------------------------------------------
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// TestApplySymlinkAlreadyCorrect — skip path when symlink already points to right target.
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// ---------------------------------------------------------------------------
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func TestApplySymlinkAlreadyCorrect(t *testing.T) {
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root := t.TempDir()
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targetDir := t.TempDir()
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target := filepath.Join(targetDir, "link")
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real := filepath.Join(targetDir, "real.txt")
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require.NoError(t, os.WriteFile(real, []byte("hello\n"), 0o600))
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require.NoError(t, os.Symlink(real, target))
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require.NoError(t, initCanonical(root))
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ad := &stubAdapter{
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name: "stub",
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files: []adapter.File{
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{Dest: target, Kind: adapter.SymlinkDir, SymlinkTarget: real},
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},
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}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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Repo: gitx.New(root),
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Written)
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assert.Equal(t, 1, rep.Skipped)
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}
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// ---------------------------------------------------------------------------
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// TestApplySymlinkReplacesExistingFile — regular file at dest gets backed up, symlink created.
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// ---------------------------------------------------------------------------
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func TestApplySymlinkReplacesExistingFile(t *testing.T) {
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root := t.TempDir()
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targetDir := t.TempDir()
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target := filepath.Join(targetDir, "config.txt")
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real := filepath.Join(targetDir, "real.txt")
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require.NoError(t, os.WriteFile(real, []byte("real\n"), 0o600))
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require.NoError(t, os.WriteFile(target, []byte("old content\n"), 0o600))
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require.NoError(t, initCanonical(root))
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ad := &stubAdapter{
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name: "stub",
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files: []adapter.File{
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{Dest: target, Kind: adapter.SymlinkFile, SymlinkTarget: real},
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},
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}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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Repo: gitx.New(root),
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})
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require.NoError(t, err)
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assert.Equal(t, 1, rep.Written)
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// target is now a symlink.
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got, err := os.Readlink(target)
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require.NoError(t, err)
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assert.Equal(t, real, got)
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// backup exists under <root>/backups/stub/.
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backupDir := filepath.Join(root, "backups", "stub")
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entries, err := os.ReadDir(backupDir)
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require.NoError(t, err)
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assert.NotEmpty(t, entries)
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}
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// ---------------------------------------------------------------------------
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// TestApplyForceOverwritesDivergence — Force=true overwrites even when target diverged.
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// ---------------------------------------------------------------------------
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func TestApplyForceOverwritesDivergence(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "out.txt")
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require.NoError(t, initCanonical(root))
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repo := gitx.New(root)
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// First apply — writes base.
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ad1 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("base\n")},
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}}
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_, err := Run(Options{Bundle: &canonical.Bundle{Root: root}, Adapters: []adapter.Adapter{ad1}, Repo: repo})
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require.NoError(t, err)
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// User diverges target.
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require.NoError(t, os.WriteFile(target, []byte("user-edit\n"), 0o600))
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// Second apply with Force=true — must overwrite regardless.
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ad2 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("forced\n")},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad2},
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Repo: repo,
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Force: true,
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})
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require.NoError(t, err)
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assert.Equal(t, 1, rep.Written)
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assert.Equal(t, 0, rep.Conflicts)
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body, err := os.ReadFile(target)
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require.NoError(t, err)
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assert.Equal(t, "forced\n", string(body))
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}
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// ---------------------------------------------------------------------------
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// TestApplyDryRunDoesNotWrite — DryRun=true populates Actions but writes nothing.
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// ---------------------------------------------------------------------------
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func TestApplyDryRunDoesNotWrite(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "out.txt")
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require.NoError(t, initCanonical(root))
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ad := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("hello\n")},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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DryRun: true,
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})
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require.NoError(t, err)
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// DryRun: Written counter not incremented; action recorded.
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assert.Equal(t, 0, rep.Written)
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assert.NotEmpty(t, rep.Actions)
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assert.Equal(t, "wrote", rep.Actions[0].Kind)
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// File must not exist on disk.
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_, statErr := os.Stat(target)
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assert.True(t, os.IsNotExist(statErr), "file must not be created in dry-run")
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}
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// ---------------------------------------------------------------------------
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// TestApplyCleanThreeWayMerge — disjoint edits merge without conflict.
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// ---------------------------------------------------------------------------
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func TestApplyCleanThreeWayMerge(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "merge.txt")
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require.NoError(t, initCanonical(root))
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repo := gitx.New(root)
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// First apply writes base content.
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ad1 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("line1\nline2\nline3\n")},
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}}
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_, err := Run(Options{Bundle: &canonical.Bundle{Root: root}, Adapters: []adapter.Adapter{ad1}, Repo: repo})
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require.NoError(t, err)
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// User edits line3 → "line3-user" (theirs).
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require.NoError(t, os.WriteFile(target, []byte("line1\nline2\nline3-user\n"), 0o600))
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// Adapter changes line1 → "line1-ours" (disjoint from user's line3 change).
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ad2 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("line1-ours\nline2\nline3\n")},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad2},
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Repo: repo,
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Conflicts)
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assert.Equal(t, 1, rep.Written)
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body, err := os.ReadFile(target)
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require.NoError(t, err)
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// Merged result must contain both changes.
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assert.Contains(t, string(body), "line1-ours")
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assert.Contains(t, string(body), "line3-user")
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}
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// ---------------------------------------------------------------------------
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// TestApplyDryRunConflict — DryRun=true on a conflict records action, no .rej written.
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// ---------------------------------------------------------------------------
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func TestApplyDryRunConflict(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "conflict.txt")
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require.NoError(t, initCanonical(root))
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repo := gitx.New(root)
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// First apply: write base.
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ad1 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("base\n")},
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}}
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_, err := Run(Options{Bundle: &canonical.Bundle{Root: root}, Adapters: []adapter.Adapter{ad1}, Repo: repo})
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require.NoError(t, err)
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// User diverges.
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require.NoError(t, os.WriteFile(target, []byte("user-edit\n"), 0o600))
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// DryRun second apply with conflicting content.
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ad2 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("new-ours\n")},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad2},
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DryRun: true,
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})
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require.NoError(t, err)
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assert.Equal(t, 1, rep.Conflicts)
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// .rej must NOT exist in dry-run.
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_, statErr := os.Stat(target + ".rej")
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assert.True(t, os.IsNotExist(statErr), ".rej must not be written in dry-run")
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}
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// ---------------------------------------------------------------------------
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// TestApplyDryRunSymlink — DryRun=true on symlink records action, no link created.
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// ---------------------------------------------------------------------------
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func TestApplyDryRunSymlink(t *testing.T) {
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root := t.TempDir()
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targetDir := t.TempDir()
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target := filepath.Join(targetDir, "dry-link")
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real := filepath.Join(targetDir, "real.txt")
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require.NoError(t, os.WriteFile(real, []byte("real\n"), 0o600))
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require.NoError(t, initCanonical(root))
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ad := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.SymlinkFile, SymlinkTarget: real},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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DryRun: true,
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Written)
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assert.NotEmpty(t, rep.Actions)
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assert.Equal(t, "symlinked", rep.Actions[0].Kind)
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// Symlink must NOT be created.
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_, statErr := os.Lstat(target)
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assert.True(t, os.IsNotExist(statErr), "symlink must not be created in dry-run")
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}
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// ---------------------------------------------------------------------------
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// TestApplyDryRunMerge — DryRun=true on a clean three-way merge records action, no write.
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// ---------------------------------------------------------------------------
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func TestApplyDryRunMerge(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "dry-merge.txt")
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require.NoError(t, initCanonical(root))
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repo := gitx.New(root)
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// Write base.
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ad1 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("line1\nline2\nline3\n")},
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}}
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_, err := Run(Options{Bundle: &canonical.Bundle{Root: root}, Adapters: []adapter.Adapter{ad1}, Repo: repo})
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require.NoError(t, err)
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// User edits line3 (theirs).
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require.NoError(t, os.WriteFile(target, []byte("line1\nline2\nline3-user\n"), 0o600))
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// DryRun apply with disjoint change (ours edits line1).
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ad2 := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: []byte("line1-ours\nline2\nline3\n")},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad2},
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DryRun: true,
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Written)
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assert.Equal(t, 0, rep.Conflicts)
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assert.NotEmpty(t, rep.Actions)
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assert.Equal(t, "wrote", rep.Actions[0].Kind)
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// File on disk must be unchanged (still the user's edit).
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body, err := os.ReadFile(target)
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require.NoError(t, err)
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assert.Equal(t, "line1\nline2\nline3-user\n", string(body))
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}
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// ---------------------------------------------------------------------------
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// TestApplyDryRunSkippedWritesState — skipped path calls writeState even in dry-run? No — writeState no-ops.
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// TestApplyRenderedSkippedAlreadyInSync — target already matches rendered content → skipped.
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// ---------------------------------------------------------------------------
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func TestApplyRenderedSkippedAlreadyInSync(t *testing.T) {
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root := t.TempDir()
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target := filepath.Join(t.TempDir(), "sync.txt")
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require.NoError(t, initCanonical(root))
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repo := gitx.New(root)
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content := []byte("synced\n")
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// Write target directly (simulates already-synced state).
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require.NoError(t, os.MkdirAll(filepath.Dir(target), 0o750))
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require.NoError(t, os.WriteFile(target, content, 0o600))
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ad := &stubAdapter{name: "stub", files: []adapter.File{
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{Dest: target, Kind: adapter.RenderedFile, Content: content},
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}}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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Repo: repo,
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Written)
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assert.Equal(t, 1, rep.Skipped)
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assert.Equal(t, "skipped", rep.Actions[0].Kind)
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}
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// ---------------------------------------------------------------------------
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// TestApplyRenderError — adapter Render error propagates.
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// ---------------------------------------------------------------------------
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func TestApplyRenderError(t *testing.T) {
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root := t.TempDir()
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require.NoError(t, initCanonical(root))
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ad := &failingAdapter{name: "bad", msg: "render failed"}
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{ad},
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})
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require.Error(t, err)
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assert.Contains(t, err.Error(), "render failed")
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assert.Equal(t, 0, rep.Written)
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}
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// ---------------------------------------------------------------------------
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// TestApplyEmptyAdapterList — no adapters → empty report, no error.
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// ---------------------------------------------------------------------------
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func TestApplyEmptyAdapterList(t *testing.T) {
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root := t.TempDir()
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require.NoError(t, initCanonical(root))
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rep, err := Run(Options{
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Bundle: &canonical.Bundle{Root: root},
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Adapters: []adapter.Adapter{},
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})
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require.NoError(t, err)
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assert.Equal(t, 0, rep.Written)
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assert.Equal(t, 0, rep.Skipped)
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assert.Equal(t, 0, rep.Conflicts)
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assert.Empty(t, rep.Actions)
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}
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// ---------------------------------------------------------------------------
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// TestApplyCommitsToRepo — Run commits to the canonical repo after writes.
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// ---------------------------------------------------------------------------
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|
||||
func TestApplyCommitsToRepo(t *testing.T) {
|
||||
root := t.TempDir()
|
||||
target := filepath.Join(t.TempDir(), "committed.txt")
|
||||
require.NoError(t, initCanonical(root))
|
||||
repo := gitx.New(root)
|
||||
|
||||
ad := &stubAdapter{name: "stub", files: []adapter.File{
|
||||
{Dest: target, Kind: adapter.RenderedFile, Content: []byte("committed\n")},
|
||||
}}
|
||||
rep, err := Run(Options{
|
||||
Bundle: &canonical.Bundle{Root: root},
|
||||
Adapters: []adapter.Adapter{ad},
|
||||
Repo: repo,
|
||||
})
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, 1, rep.Written)
|
||||
|
||||
// git log should have at least 2 commits (init + apply).
|
||||
out, gitErr := runGit(root, "log", "--oneline")
|
||||
require.NoError(t, gitErr)
|
||||
assert.GreaterOrEqual(t, countLines(out), 2, "expected at least 2 commits in git log")
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// TestApplyStateRoundTrip — re-apply same content → skipped (no second write).
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
func TestApplyStateRoundTrip(t *testing.T) {
|
||||
root := t.TempDir()
|
||||
target := filepath.Join(t.TempDir(), "round.txt")
|
||||
require.NoError(t, initCanonical(root))
|
||||
repo := gitx.New(root)
|
||||
|
||||
content := []byte("stable\n")
|
||||
ad := &stubAdapter{name: "stub", files: []adapter.File{
|
||||
{Dest: target, Kind: adapter.RenderedFile, Content: content},
|
||||
}}
|
||||
opts := Options{
|
||||
Bundle: &canonical.Bundle{Root: root},
|
||||
Adapters: []adapter.Adapter{ad},
|
||||
Repo: repo,
|
||||
}
|
||||
|
||||
// First apply: writes.
|
||||
rep1, err := Run(opts)
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, 1, rep1.Written)
|
||||
|
||||
// Second apply: target matches content → skipped.
|
||||
rep2, err := Run(opts)
|
||||
require.NoError(t, err)
|
||||
assert.Equal(t, 0, rep2.Written)
|
||||
assert.Equal(t, 1, rep2.Skipped)
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// TestApplyUnknownFileKind — unknown Kind returns error.
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
func TestApplyUnknownFileKind(t *testing.T) {
|
||||
root := t.TempDir()
|
||||
target := filepath.Join(t.TempDir(), "unknown.txt")
|
||||
require.NoError(t, initCanonical(root))
|
||||
|
||||
ad := &stubAdapter{name: "stub", files: []adapter.File{
|
||||
{Dest: target, Kind: adapter.Kind(99)},
|
||||
}}
|
||||
_, err := Run(Options{
|
||||
Bundle: &canonical.Bundle{Root: root},
|
||||
Adapters: []adapter.Adapter{ad},
|
||||
})
|
||||
require.Error(t, err)
|
||||
assert.Contains(t, err.Error(), "unknown file kind")
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// helpers
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
func initCanonical(root string) error {
|
||||
if err := os.MkdirAll(filepath.Join(root, "state"), 0o750); err != nil {
|
||||
return err
|
||||
@@ -117,3 +601,19 @@ func initCanonical(root string) error {
|
||||
}
|
||||
return r.Commit("init")
|
||||
}
|
||||
|
||||
func runGit(dir string, args ...string) (string, error) {
|
||||
allArgs := append([]string{"-C", dir}, args...)
|
||||
out, err := exec.Command("git", allArgs...).Output() //nolint:gosec
|
||||
return string(out), err
|
||||
}
|
||||
|
||||
func countLines(s string) int {
|
||||
n := 0
|
||||
for _, c := range s {
|
||||
if c == '\n' {
|
||||
n++
|
||||
}
|
||||
}
|
||||
return n
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user