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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.models.handler;
import ai.vespa.models.evaluation.ModelsEvaluator;
import com.yahoo.container.jdisc.HttpRequest;
import com.yahoo.container.jdisc.HttpResponse;
import com.yahoo.tensor.Tensor;
import com.yahoo.tensor.serialization.JsonFormat;
import com.yahoo.text.JSON;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import java.util.concurrent.Executors;
import java.util.function.Predicate;
import static org.junit.Assert.assertEquals;
import static com.yahoo.slime.SlimeUtils.jsonToSlime;
class HandlerTester {
private final ModelsEvaluationHandler handler;
private static Predicate<String> nop() {
return s -> true;
}
private static Predicate<String> matchString(String expected) {
return s -> {
boolean result = expected.equals(s);
if (!result) {
System.out.println("Expected: " + expected);
System.out.println("Actual: " + s);
}
return result;
};
}
private static Predicate<String> matchJsonString(String expected) {
return s -> {
boolean result = JSON.canonical(expected).equals(JSON.canonical(s));
if (!result) {
System.out.println("Expected: " + expected);
System.out.println("Actual: " + s);
}
return result;
};
}
public static Predicate<String> matchJson(String... expectedJson) {
var jExp = String.join("\n", expectedJson).replaceAll("'", "\"");
var expected = jsonToSlime(jExp);
return s -> {
var got = jsonToSlime(s);
boolean result = got.equalTo(expected);
if (!result) {
System.err.println("got:");
System.err.println(got);
System.err.println("expected:");
System.err.println(expected);
}
return result;
};
}
HandlerTester(ModelsEvaluator models) {
this.handler = new ModelsEvaluationHandler(models, Executors.newSingleThreadExecutor());
}
void assertResponse(String url, int expectedCode) {
checkResponse(url, expectedCode, nop());
}
void assertResponse(String url, int expectedCode, String expectedResult) {
assertResponse(url, Map.of(), expectedCode, expectedResult);
}
void checkResponse(String url, int expectedCode, Predicate<String> check) {
checkResponse(url, Map.of(), expectedCode, check, Map.of());
}
void assertResponse(String url, int expectedCode, String expectedResult, Map<String, String> headers) {
assertResponse(url, Map.of(), expectedCode, expectedResult, headers);
}
void assertResponse(String url, Map<String, String> properties, int expectedCode, String expectedResult) {
assertResponse(url, properties, expectedCode, expectedResult, Map.of());
}
void assertResponse(String url, Map<String, String> properties, int expectedCode, String expectedResult, Map<String, String> headers) {
checkResponse(url, properties, expectedCode, matchJsonString(expectedResult), headers);
}
void assertStringResponse(String url, Map<String, String> properties, int expectedCode, String expectedResult, Map<String, String> headers) {
checkResponse(url, properties, expectedCode, matchString(expectedResult), headers);
}
void checkResponse(String url, Map<String, String> properties, int expectedCode, Predicate<String> check, Map<String, String> headers) {
HttpRequest getRequest = HttpRequest.createTestRequest(url, com.yahoo.jdisc.http.HttpRequest.Method.GET, null, properties);
HttpRequest postRequest = HttpRequest.createTestRequest(url, com.yahoo.jdisc.http.HttpRequest.Method.POST, null, properties);
if (headers.size() > 0) {
headers.forEach((k,v) -> getRequest.getJDiscRequest().headers().add(k, v));
headers.forEach((k,v) -> postRequest.getJDiscRequest().headers().add(k, v));
}
checkResponse(getRequest, expectedCode, check);
checkResponse(postRequest, expectedCode, check);
}
void assertResponse(String url, Map<String, String> properties, int expectedCode, Tensor expectedResult) {
HttpRequest getRequest = HttpRequest.createTestRequest(url, com.yahoo.jdisc.http.HttpRequest.Method.GET, null, properties);
assertResponse(getRequest, expectedCode, expectedResult);
}
void checkResponse(HttpRequest request, int expectedCode, Predicate<String> check) {
HttpResponse response = handler.handle(request);
assertEquals("application/json", response.getContentType());
assertEquals(true, check.test(getContents(response)));
assertEquals(expectedCode, response.getStatus());
}
void assertResponse(HttpRequest request, int expectedCode, Tensor expectedResult) {
HttpResponse response = handler.handle(request);
assertEquals("application/json", response.getContentType());
assertEquals(expectedCode, response.getStatus());
if (expectedResult != null) {
String contents = getContents(response);
Tensor result = JsonFormat.decode(expectedResult.type(), contents.getBytes(StandardCharsets.UTF_8));
assertEquals(expectedResult, result);
}
}
private String getContents(HttpResponse response) {
try (ByteArrayOutputStream stream = new ByteArrayOutputStream()) {
response.render(stream);
return stream.toString();
} catch (IOException e) {
throw new Error(e);
}
}
}
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