Add ListPullRequestCommits (#530)

ref: https://github.com/go-gitea/gitea/pull/16300

Reviewed-on: https://gitea.com/gitea/go-sdk/pulls/530
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Norwin <noerw@noreply.gitea.io>
Co-authored-by: 6543 <6543@obermui.de>
Co-committed-by: 6543 <6543@obermui.de>

gitea/pull.go

@@ -285,6 +285,24 @@ func (c *Client) GetPullRequestDiff(owner, repo string, index int64) ([]byte, *R
 	return c.getPullRequestDiffOrPatch(owner, repo, "diff", index)
 }
 
+// ListPullRequestCommitsOptions options for listing pull requests
+type ListPullRequestCommitsOptions struct {
+	ListOptions
+}
+
+// ListPullRequestCommits list commits for a pull request
+func (c *Client) ListPullRequestCommits(owner, repo string, index int64, opt ListPullRequestCommitsOptions) ([]*Commit, *Response, error) {
+	if err := escapeValidatePathSegments(&owner, &repo); err != nil {
+		return nil, nil, err
+	}
+	link, _ := url.Parse(fmt.Sprintf("/repos/%s/%s/pulls/%d/commits", owner, repo, index))
+	opt.setDefaults()
+	commits := make([]*Commit, 0, opt.PageSize)
+	link.RawQuery = opt.getURLQuery().Encode()
+	resp, err := c.getParsedResponse("GET", link.String(), nil, nil, &commits)
+	return commits, resp, err
+}
+
 // fixPullHeadSha is a workaround for https://github.com/go-gitea/gitea/issues/12675
 // When no head sha is available, this is because the branch got deleted in the base repo.
 // pr.Head.Ref points in this case not to the head repo branch name, but the base repo ref,

gitea/pull_test.go

@@ -63,6 +63,12 @@ func TestPull(t *testing.T) {
 	assert.NoError(t, err)
 	assert.True(t, len(patch) > len(diff))
 
+	commits, _, err := c.ListPullRequestCommits(c.username, repoName, pullUpdateFile.Index, ListPullRequestCommitsOptions{})
+	assert.NoError(t, err)
+	if assert.Len(t, commits, 1) && assert.Len(t, commits[0].Files, 1) {
+		assert.EqualValues(t, "LICENSE", commits[0].Files[0].Filename)
+	}
+
 	// test Update pull
 	pr, _, err := c.GetPullRequest(user.UserName, repoName, pullUpdateFile.Index)
 	assert.NoError(t, err)

gitea/version.go

@@ -45,6 +45,7 @@ var (
 	version1_12_0, _ = version.NewVersion("1.12.0")
 	version1_13_0, _ = version.NewVersion("1.13.0")
 	version1_14_0, _ = version.NewVersion("1.14.0")
+	version1_15_0, _ = version.NewVersion("1.15.0")
 )
 
 // checkServerVersionGreaterThanOrEqual is internally used to speed up things and ignore issues with prerelease