worktree: Commit, tests improvements

5 files changed, 58 insertions, 11 deletions

diff --git a/options.go b/options.go
index 48c9819..977e462 100644
--- a/options.go
+++ b/options.go
@@ -43,7 +43,7 @@ type CloneOptions struct {
 	// Limit fetching to the specified number of commits.
 	Depth int
 	// RecurseSubmodules after the clone is created, initialize all submodules
-	// within, using their defaut settings. This option is ignored if the
+	// within, using their default settings. This option is ignored if the
 	// cloned repository does not have a worktree.
 	RecurseSubmodules SubmoduleRescursivity
 	// Progress is where the human readable information sent by the server is
@@ -73,7 +73,7 @@ func (o *CloneOptions) Validate() error {
 type PullOptions struct {
 	// Name of the remote to be pulled. If empty, uses the default.
 	RemoteName string
-	// Remote branch to clone.  If empty, uses HEAD.
+	// Remote branch to clone. If empty, uses HEAD.
 	ReferenceName plumbing.ReferenceName
 	// Fetch only ReferenceName if true.
 	SingleBranch bool
@@ -254,8 +254,7 @@ type LogOptions struct {
 }
 
 var (
-	ErrMissingAuthor    = errors.New("author field is required")
-	ErrMissingCommitter = errors.New("committer field is required")
+	ErrMissingAuthor = errors.New("author field is required")
 )
 
 // CommitOptions describes how a commit operation should be performed.
@@ -266,10 +265,10 @@ type CommitOptions struct {
 	// Author is the author's signature of the commit.
 	Author *object.Signature
 	// Committer is the committer's signature of the commit. If Committer is
-	// equal to nil the Author signature is used.
+	// nil the Author signature is used.
 	Committer *object.Signature
-	// Parents parents commits for the new commit, by default is the hash of
-	// HEAD reference.
+	// Parents are the parents commits for the new commit, by default when
+	// len(Parents) is zero, the hash of HEAD reference is used.
 	Parents []plumbing.Hash
 }
 
diff --git a/options_test.go b/options_test.go
new file mode 100644
index 0000000..5274113
--- /dev/null
+++ b/options_test.go
@@ -0,0 +1,35 @@
+package git
+
+import (
+	. "gopkg.in/check.v1"
+	"gopkg.in/src-d/go-git.v4/plumbing/object"
+)
+
+type OptionsSuite struct {
+	BaseSuite
+}
+
+var _ = Suite(&OptionsSuite{})
+
+func (s *OptionsSuite) TestCommitOptionsParentsFromHEAD(c *C) {
+	o := CommitOptions{Author: &object.Signature{}}
+	err := o.Validate(s.Repository)
+	c.Assert(err, IsNil)
+	c.Assert(o.Parents, HasLen, 1)
+}
+
+func (s *OptionsSuite) TestCommitOptionsMissingAuthor(c *C) {
+	o := CommitOptions{}
+	err := o.Validate(s.Repository)
+	c.Assert(err, Equals, ErrMissingAuthor)
+}
+
+func (s *OptionsSuite) TestCommitOptionsCommitter(c *C) {
+	sig := &object.Signature{}
+
+	o := CommitOptions{Author: sig}
+	err := o.Validate(s.Repository)
+	c.Assert(err, IsNil)
+
+	c.Assert(o.Committer, Equals, o.Author)
+}
diff --git a/plumbing/object/commit.go b/plumbing/object/commit.go
index adac4f9..0a20ae6 100644
--- a/plumbing/object/commit.go
+++ b/plumbing/object/commit.go
@@ -30,9 +30,9 @@ type Commit struct {
 	Committer Signature
 	// Message is the commit message, contains arbitrary text.
 	Message string
-	// TreeHash hash of the tree pointed by the commit.
+	// TreeHash is the hash of the root tree of the commit.
 	TreeHash plumbing.Hash
-	// ParentHashes hashes of the parent commits of the commit.
+	// ParentHashes are the hashes of the parent commits of the commit.
 	ParentHashes []plumbing.Hash
 
 	s storer.EncodedObjectStorer
diff --git a/worktree_commit.go b/worktree_commit.go
index 9cefdcf..bec75b2 100644
--- a/worktree_commit.go
+++ b/worktree_commit.go
@@ -22,7 +22,7 @@ func (w *Worktree) Commit(msg string, opts *CommitOptions) (plumbing.Hash, error
 		return plumbing.ZeroHash, err
 	}
 
-	if opts.All == true {
+	if opts.All {
 		if err := w.autoAddModifiedAndDeleted(); err != nil {
 			return plumbing.ZeroHash, err
 		}
@@ -103,7 +103,7 @@ func (w *Worktree) buildCommitObject(msg string, opts *CommitOptions, tree plumb
 }
 
 // commitIndexHelper converts a given index.Index file into multiple git objects
-// reading the blogs from the given filesystem and creating the trees from the
+// reading the blobs from the given filesystem and creating the trees from the
 // index structure. The created objects are pushed to a given Storer.
 type commitIndexHelper struct {
 	fs billy.Filesystem
diff --git a/worktree_commit_test.go b/worktree_commit_test.go
index f9cf4f3..7e1b93c 100644
--- a/worktree_commit_test.go
+++ b/worktree_commit_test.go
@@ -13,6 +13,18 @@ import (
 	"gopkg.in/src-d/go-billy.v2/memfs"
 )
 
+func (s *WorktreeSuite) TestCommitInvalidOptions(c *C) {
+	r, err := Init(memory.NewStorage(), memfs.New())
+	c.Assert(err, IsNil)
+
+	w, err := r.Worktree()
+	c.Assert(err, IsNil)
+
+	hash, err := w.Commit("", &CommitOptions{})
+	c.Assert(err, Equals, ErrMissingAuthor)
+	c.Assert(hash.IsZero(), Equals, true)
+}
+
 func (s *WorktreeSuite) TestCommitInitial(c *C) {
 	expected := plumbing.NewHash("98c4ac7c29c913f7461eae06e024dc18e80d23a4")
 
@@ -74,6 +86,7 @@ func (s *WorktreeSuite) TestCommitAll(c *C) {
 	c.Assert(err, IsNil)
 
 	billy.WriteFile(fs, "LICENSE", []byte("foo"), 0644)
+	billy.WriteFile(fs, "foo", []byte("foo"), 0644)
 
 	hash, err := w.Commit("foo\n", &CommitOptions{
 		All:    true,