GitHub list commits fix (#152)

* fixing commit list options for github list commits API

* added integration tests

* fix UT

scm/driver/github/git_test.go

@@ -145,7 +145,7 @@ func TestGitListCommits(t *testing.T) {
 		Get("/repos/octocat/hello-world/commits").
 		MatchParam("page", "1").
 		MatchParam("per_page", "30").
-		MatchParam("ref", "master").
+		MatchParam("sha", "master").
 		Reply(200).
 		Type("application/json").
 		SetHeaders(mockHeaders).

scm/driver/github/integration/git_test.go

@@ -114,7 +114,8 @@ func testCommits(client *scm.Client) func(t *testing.T) {
 	return func(t *testing.T) {
 		t.Parallel()
 		t.Run("Find", testCommitFind(client))
-		t.Run("List", testCommitList(client))
+		t.Run("List-Default-Branch", testCommitListDefaultBranch(client))
+		t.Run("List-Non-Default-Branch", testCommitListNonDefaultBranch(client))
 	}
 }
 
@@ -130,7 +131,7 @@ func testCommitFind(client *scm.Client) func(t *testing.T) {
 	}
 }
 
-func testCommitList(client *scm.Client) func(t *testing.T) {
+func testCommitListDefaultBranch(client *scm.Client) func(t *testing.T) {
 	return func(t *testing.T) {
 		t.Parallel()
 		opts := scm.CommitListOptions{
@@ -152,6 +153,33 @@ func testCommitList(client *scm.Client) func(t *testing.T) {
 	}
 }
 
+func testCommitListNonDefaultBranch(client *scm.Client) func(t *testing.T) {
+	return func(t *testing.T) {
+		t.Parallel()
+		opts := scm.CommitListOptions{
+			Ref: "octocat-patch-1",
+		}
+		result, _, err := client.Git.ListCommits(context.Background(), "octocat/Hello-World", opts)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		if len(result) == 0 {
+			t.Errorf("Want a non-empty commit list")
+		}
+
+		if got, want := result[0].Sha, "b1b3f9723831141a31a1a7252a213e216ea76e56"; got != want {
+			t.Errorf("Want commit Sha %q, got %q", want, got)
+		}
+
+		for _, commit := range result {
+			if commit.Sha == "7fd1a60b01f91b314f59955a4e4d4e80d8edf11d" {
+				t.Run("Commit", testCommit(commit))
+			}
+		}
+	}
+}
+
 //
 // struct sub-tests
 //

scm/driver/github/util.go

@@ -31,7 +31,7 @@ func encodeCommitListOptions(opts scm.CommitListOptions) string {
 		params.Set("per_page", strconv.Itoa(opts.Size))
 	}
 	if opts.Ref != "" {
-		params.Set("ref", opts.Ref)
+		params.Set("sha", opts.Ref)
 	}
 	if opts.Path != "" {
 		params.Set("path", opts.Path)

scm/driver/github/util_test.go

@@ -29,7 +29,7 @@ func Test_encodeCommitListOptions(t *testing.T) {
 		Ref:  "master",
 		Path: "readme.md",
 	}
-	want := "page=10&path=readme.md&per_page=30&ref=master"
+	want := "page=10&path=readme.md&per_page=30&sha=master"
 	got := encodeCommitListOptions(opts)
 	if got != want {
 		t.Errorf("Want encoded commit list options %q, got %q", want, got)