1 // Copyright 2020 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 //////////////////////////////////////////////////////////////////////////////// 16 17 package com.google.crypto.tink.jwt; 18 19 import static com.google.common.truth.Truth.assertThat; 20 import static org.junit.Assert.assertThrows; 21 22 import com.google.gson.JsonArray; 23 import com.google.gson.JsonObject; 24 import org.junit.Test; 25 import org.junit.runner.RunWith; 26 import org.junit.runners.JUnit4; 27 28 /** Unit tests for JsonUtil */ 29 @RunWith(JUnit4.class) 30 public final class JsonUtilTest { 31 32 @Test validateValidString_success()33 public void validateValidString_success() throws Exception { 34 assertThat(JsonUtil.isValidString("")).isTrue(); 35 assertThat(JsonUtil.isValidString("foo")).isTrue(); 36 assertThat(JsonUtil.isValidString("*\uD834\uDD1E*")).isTrue(); 37 assertThat(JsonUtil.isValidString("\uD834\uDD1E*")).isTrue(); 38 assertThat(JsonUtil.isValidString("*\uD834\uDD1E")).isTrue(); 39 assertThat(JsonUtil.isValidString("\uD834\uDD1E")).isTrue(); 40 } 41 42 @Test validateInvalidString_throws()43 public void validateInvalidString_throws() throws Exception { 44 assertThat(JsonUtil.isValidString("*\uD834")).isFalse(); 45 assertThat(JsonUtil.isValidString("\uD834*")).isFalse(); 46 assertThat(JsonUtil.isValidString("\uD834")).isFalse(); 47 assertThat(JsonUtil.isValidString("*\uD834*")).isFalse(); 48 assertThat(JsonUtil.isValidString("\uDD1E")).isFalse(); 49 assertThat(JsonUtil.isValidString("*\uDD1E")).isFalse(); 50 assertThat(JsonUtil.isValidString("\uDD1E*")).isFalse(); 51 assertThat(JsonUtil.isValidString("*\uDD1E*")).isFalse(); 52 } 53 ; 54 55 @Test parseJson_success()56 public void parseJson_success() throws Exception { 57 JsonObject header = JsonUtil.parseJson("{\"bool\":false}"); 58 assertThat(header.get("bool").getAsBoolean()).isFalse(); 59 } 60 61 @Test parseJsonArray_success()62 public void parseJsonArray_success() throws Exception { 63 JsonArray array = JsonUtil.parseJsonArray("[1, \"foo\"]"); 64 assertThat(array.get(0).getAsInt()).isEqualTo(1); 65 assertThat(array.get(1).getAsString()).isEqualTo("foo"); 66 } 67 68 @Test parseRecursiveJsonString_success()69 public void parseRecursiveJsonString_success() throws Exception { 70 StringBuilder sb = new StringBuilder(); 71 for (int i = 0; i < 10000; i++) { 72 sb.append("{\"a\":"); 73 } 74 sb.append("1"); 75 for (int i = 0; i < 10000; i++) { 76 sb.append("}"); 77 } 78 assertThrows(JwtInvalidException.class, () -> JsonUtil.parseJson(sb.toString())); 79 } 80 81 @Test parseJsonWithoutQuotes_fail()82 public void parseJsonWithoutQuotes_fail() throws Exception { 83 assertThrows(JwtInvalidException.class, () -> JsonUtil.parseJson("{bool:false}")); 84 } 85 86 @Test parseJsonObjectWithoutDuplicateKey_fail()87 public void parseJsonObjectWithoutDuplicateKey_fail() throws Exception { 88 assertThrows(JwtInvalidException.class, () -> JsonUtil.parseJson("{\"a\":1,\"a\":2}")); 89 } 90 91 @Test parseJsonArrayWithoutComments_fail()92 public void parseJsonArrayWithoutComments_fail() throws Exception { 93 assertThrows(JwtInvalidException.class, () -> JsonUtil.parseJson("[1, \"foo\" /* comment */]")); 94 } 95 96 @Test parseJsonWithoutComments_fail()97 public void parseJsonWithoutComments_fail() throws Exception { 98 assertThrows( 99 JwtInvalidException.class, () -> JsonUtil.parseJson("{\"bool\":false /* comment */}")); 100 } 101 } 102