test: expand handler tests to 53.4% coverage

internal/handler/tasks_test.go

@@ -2,9 +2,12 @@ package handler
 
 import (
 	"bytes"
+	"context"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+
+	"github.com/go-chi/chi/v5"
 )
 
 func TestTaskHandler_Create_InvalidBody(t *testing.T) {
@@ -31,3 +34,115 @@ func TestTaskHandler_Create_EmptyTitle(t *testing.T) {
 		t.Errorf("expected 400, got %d", rr.Code)
 	}
 }
+
+// helper: add chi URL param to request
+func withChiParam(r *http.Request, key, val string) *http.Request {
+	rctx := chi.NewRouteContext()
+	rctx.URLParams.Add(key, val)
+	return r.WithContext(context.WithValue(r.Context(), chi.RouteCtxKey, rctx))
+}
+
+func TestTaskHandler_Get_NoChiParam(t *testing.T) {
+	req := httptest.NewRequest("GET", "/tasks/1", nil)
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Get(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Get_InvalidID(t *testing.T) {
+	req := httptest.NewRequest("GET", "/tasks/abc", nil)
+	req = withChiParam(req, "id", "abc")
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Get(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Update_NoChiParam(t *testing.T) {
+	req := httptest.NewRequest("PUT", "/tasks/1", bytes.NewBufferString("{}"))
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Update(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Update_InvalidBody(t *testing.T) {
+	req := httptest.NewRequest("PUT", "/tasks/1", bytes.NewBufferString("bad json"))
+	req = withChiParam(req, "id", "1")
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Update(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Delete_NoChiParam(t *testing.T) {
+	req := httptest.NewRequest("DELETE", "/tasks/1", nil)
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Delete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Delete_InvalidID(t *testing.T) {
+	req := httptest.NewRequest("DELETE", "/tasks/abc", nil)
+	req = withChiParam(req, "id", "abc")
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Delete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Complete_NoChiParam(t *testing.T) {
+	req := httptest.NewRequest("POST", "/tasks/1/complete", nil)
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Complete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Complete_InvalidID(t *testing.T) {
+	req := httptest.NewRequest("POST", "/tasks/abc/complete", nil)
+	req = withChiParam(req, "id", "abc")
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Complete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Uncomplete_NoChiParam(t *testing.T) {
+	req := httptest.NewRequest("POST", "/tasks/1/uncomplete", nil)
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Uncomplete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}
+
+func TestTaskHandler_Uncomplete_InvalidID(t *testing.T) {
+	req := httptest.NewRequest("POST", "/tasks/abc/uncomplete", nil)
+	req = withChiParam(req, "id", "abc")
+	rr := httptest.NewRecorder()
+	h := &TaskHandler{taskService: nil}
+	h.Uncomplete(rr, req)
+	if rr.Code != http.StatusBadRequest {
+		t.Errorf("expected 400, got %d", rr.Code)
+	}
+}