added tests for get movie by id endpoint

tests/integration/handlers_test.go

@@ -36,3 +36,29 @@ func TestGetMovies_Integration(t *testing.T) {
 
 	assert.Greater(t, len(movies), 0, "Expected at least one movie")
 }
+
+func TestGetMovie_Integration(t *testing.T) {
+	r := mux.NewRouter()
+	// Assuming api.GetMovie is the handler for getting a single movie by ID
+	r.HandleFunc("/movies/{id}", api.GetMovie).Methods("GET")
+
+	ts := httptest.NewServer(r)
+	defer ts.Close()
+
+	// Replace "someValidMovieID" with a valid movie ID that exists in your data source
+	resp, err := http.Get(ts.URL + "/movies/1")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Equal(t, http.StatusOK, resp.StatusCode, "Expected status code 200")
+
+	var movie api.Movie
+	err = json.NewDecoder(resp.Body).Decode(&movie)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Replace "someValidMovieID" with the same valid movie ID used in the request
+	assert.Equal(t, "1", movie.ID, "Expected the movie ID to match")
+}

tests/unit/handlers_test.go

@@ -10,6 +10,7 @@ import (
 	"net/http/httptest"
 	"testing"
 
+	"github.com/gorilla/mux"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -34,3 +35,49 @@ func TestGetMovies_Unit(t *testing.T) {
 
 	assert.Greater(t, len(movies), 0, "Expected at least one movie")
 }
+
+func TestGetMovie_ValidID(t *testing.T) {
+	req, err := http.NewRequest("GET", "/movies/{id}", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	vars := map[string]string{
+		"id": "1", // Replace with an actual valid ID
+	}
+	req = mux.SetURLVars(req, vars)
+
+	rr := httptest.NewRecorder()
+	handler := http.HandlerFunc(api.GetMovie)
+
+	handler.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code, "Expected status code 200")
+
+	var movie api.Movie
+	err = json.Unmarshal(rr.Body.Bytes(), &movie)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assert.Equal(t, "1", movie.ID, "Expected the movie ID to match")
+}
+
+func TestGetMovie_InvalidID(t *testing.T) {
+	req, err := http.NewRequest("GET", "/movies/{id}", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	vars := map[string]string{
+		"id": "nonExistentID",
+	}
+	req = mux.SetURLVars(req, vars)
+
+	rr := httptest.NewRecorder()
+	handler := http.HandlerFunc(api.GetMovie)
+
+	handler.ServeHTTP(rr, req)
+
+	assert.Equal(t, http.StatusNotFound, rr.Code, "Expected status code 404")
+}