Python Matplotlib将错误大小的图保存在类中

Question

Plt.savefig（）在我在终端中调用load_dendro（）函数时以正确的大小保存了我的绘图，但是当在类中调用它时，它具有432x288像素。我在Windows上使用python，我的IDE是spyder。屏幕快照在运行完整代码后包含den.png文件，而在仅运行load_dendro函数后包含其中的一部分。 这是我的代码： screenshot

@RunWith(SpringRunner::class)
@SpringBootTest(classes = [(MovieApplication::class)],
    webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class RestTest {
@LocalServerPort
var port = 0

@Before
@After
fun clean() {
    RestAssured.baseURI = "http://localhost"
    RestAssured.port = port
    RestAssured.basePath = "/movie"
    RestAssured.enableLoggingOfRequestAndResponseIfValidationFails()

    val list = RestAssured.given().accept(ContentType.JSON).get()
            .then()
            .statusCode(200)
            .extract()
            .`as`(Array<MovieDTO>::class.java)
            .toList()

    list.stream().forEach {
        RestAssured.given().pathParam("id", it.id)
                .delete("/{id}")
                .then()
                .statusCode(204)
    }
    RestAssured.given().get()
            .then()
            .statusCode(200)
            .body("size()", CoreMatchers.equalTo(0))
}

@Test
fun testCreateMovie() {
    val title = "title"
    val director = "director"
    val description = "description"
    val info = "info"
    val rating = 4
    val releaseDate = ZonedDateTime.now()

    val dto = MovieDTO(title, director, description, info, rating, releaseDate)

    RestAssured.given().accept(MediaType.APPLICATION_JSON_UTF8_VALUE)
            .get()
            .then()
            .statusCode(200)
            .body("size()", CoreMatchers.equalTo(0))

    val id = RestAssured.given().contentType(MediaType.APPLICATION_JSON_UTF8_VALUE)
            .body(dto)
            .post()
            .then()
            .statusCode(201)
            .extract().asString()

    RestAssured.given().accept(MediaType.APPLICATION_JSON_UTF8_VALUE)
            .get()
            .then()
            .statusCode(200)
            .body("size()", CoreMatchers.equalTo(1))
    RestAssured.given().accept(MediaType.APPLICATION_JSON_UTF8_VALUE)
            .pathParam("id", id)
            .get("/{id}")
            .then()
            .statusCode(200)
            .body("title", CoreMatchers.equalTo(title))
            .body("director", CoreMatchers.equalTo(director))
            .body("description", CoreMatchers.equalTo(description))
            .body("info", CoreMatchers.equalTo(info))
            .body("rating", CoreMatchers.equalTo(rating))
            .body("releaseDate", CoreMatchers.equalTo(releaseDate))
            .body("id", CoreMatchers.equalTo(id))
}