diff --git a/github/review.go b/github/review.go
index e85ae00..bd2e05a 100644
--- a/github/review.go
+++ b/github/review.go
@@ -173,6 +173,7 @@ func (c *Client) DeleteReview(ctx context.Context, owner, repo string, number in
 	reqURL := fmt.Sprintf("%s/repos/%s/%s/pulls/%d/reviews/%d",
 		c.baseURL, url.PathEscape(owner), url.PathEscape(repo), number, reviewID)
 
+	// nil body: the GitHub DELETE endpoint for reviews requires no request body.
 	_, err := c.doRequestWithBody(ctx, http.MethodDelete, reqURL, nil)
 	if err != nil {
 		var apiErr *APIError
diff --git a/github/review_test.go b/github/review_test.go
index 2432cfc..33f8743 100644
--- a/github/review_test.go
+++ b/github/review_test.go
@@ -348,21 +348,24 @@ func TestDismissReview_401(t *testing.T) {
 
 func TestTranslateGitHubReviewState(t *testing.T) {
 	tests := []struct {
+		name  string
 		input string
 		want  string
 	}{
-		{"APPROVED", "APPROVED"},
-		{"CHANGES_REQUESTED", "REQUEST_CHANGES"},
-		{"COMMENTED", "COMMENT"},
-		{"DISMISSED", "DISMISSED"},
-		{"UNKNOWN_STATE", "UNKNOWN_STATE"},
-		{"", ""},
+		{"approved passes through", "APPROVED", "APPROVED"},
+		{"changes_requested maps to REQUEST_CHANGES", "CHANGES_REQUESTED", "REQUEST_CHANGES"},
+		{"commented maps to COMMENT", "COMMENTED", "COMMENT"},
+		{"dismissed passes through", "DISMISSED", "DISMISSED"},
+		{"unknown state passes through", "UNKNOWN_STATE", "UNKNOWN_STATE"},
+		{"empty string passes through", "", ""},
 	}
 	for _, tt := range tests {
-		got := translateGitHubReviewState(tt.input)
-		if got != tt.want {
-			t.Errorf("translateGitHubReviewState(%q) = %q, want %q", tt.input, got, tt.want)
-		}
+		t.Run(tt.name, func(t *testing.T) {
+			got := translateGitHubReviewState(tt.input)
+			if got != tt.want {
+				t.Errorf("translateGitHubReviewState(%q) = %q, want %q", tt.input, got, tt.want)
+			}
+		})
 	}
 }