Add Bazel tests

BUILD.bazel

@@ -1,7 +1,29 @@
 licenses(["unencumbered"])  # Public Domain or MIT
 
+load("@bazel_skylib//rules:common_settings.bzl", "bool_flag")
+
 exports_files(["LICENSE"])
 
+bool_flag(
+    name = "use_exception",
+    build_setting_default = False,
+)
+
+config_setting(
+    name = "use_exception_cfg",
+    flag_values = {":use_exception": "true"},
+)
+
+bool_flag(
+    name = "has_int64",
+    build_setting_default = True,
+)
+
+config_setting(
+    name = "has_int64_cfg",
+    flag_values = {":has_int64": "true"},
+)
+
 cc_library(
     name = "jsoncpp",
     srcs = [
@@ -22,10 +44,13 @@ cc_library(
         "include/json/version.h",
         "include/json/writer.h",
     ],
-    copts = [
-        "-DJSON_USE_EXCEPTION=0",
-        "-DJSON_HAS_INT64",
-    ],
+    defines = select({
+        ":use_exception_cfg": ["JSON_USE_EXCEPTION=1"],
+        "//conditions:default": ["JSON_USE_EXCEPTION=0"],
+    }) + select({
+        ":has_int64_cfg": ["JSON_HAS_INT64"],
+        "//conditions:default": [],
+    }),
     includes = ["include"],
     visibility = ["//visibility:public"],
     deps = [":private"],

MODULE.bazel

@@ -12,3 +12,8 @@ module(
     version = "1.9.7",
     compatibility_level = 1,
 )
+
+bazel_dep(
+    name = "bazel_skylib",
+    version = "1.7.1",
+)

src/jsontestrunner/BUILD.bazel

@@ -0,0 +1,6 @@
+cc_binary(
+    name = "jsontestrunner",
+    srcs = ["main.cpp"],
+    deps = ["//:jsoncpp"],
+    visibility = ["//test:__pkg__"],
+)

src/test_lib_json/BUILD.bazel

@@ -0,0 +1,11 @@
+cc_test(
+    name = "jsoncpp_test",
+    srcs = [
+        "jsontest.cpp",
+        "jsontest.h",
+        "main.cpp",
+        "fuzz.h",
+        "fuzz.cpp",
+        ],
+    deps = ["//:jsoncpp"],
+)

src/test_lib_json/fuzz.cpp

@@ -11,10 +11,6 @@
 #include <memory>
 #include <string>
 
-namespace Json {
-class Exception;
-}
-
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
   Json::CharReaderBuilder builder;
 
@@ -45,10 +41,14 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
 
   Json::Value root;
   const auto data_str = reinterpret_cast<const char*>(data);
+#if JSON_USE_EXCEPTION
   try {
+#endif // JSON_USE_EXCEPTION
     reader->parse(data_str, data_str + size, &root, nullptr);
+#if JSON_USE_EXCEPTION
   } catch (Json::Exception const&) {
   }
+#endif // JSON_USE_EXCEPTION
   // Whether it succeeded or not doesn't matter.
   return 0;
 }

src/test_lib_json/jsontest.h

@@ -228,6 +228,8 @@ TestResult& checkStringEqual(TestResult& result, const Json::String& expected,
                              JsonTest::ToJsonString(actual), __FILE__,         \
                              __LINE__, #expected " == " #actual)
 
+#if JSON_USE_EXCEPTION
+
 /// \brief Asserts that a given expression throws an exception
 #define JSONTEST_ASSERT_THROWS(expr)                                           \
   do {                                                                         \
@@ -242,6 +244,8 @@ TestResult& checkStringEqual(TestResult& result, const Json::String& expected,
                           "expected exception thrown: " #expr);                \
   } while (0)
 
+#endif // JSON_USE_EXCEPTION
+
 /// \brief Begin a fixture test case.
 #define JSONTEST_FIXTURE(FixtureType, name)                                    \
   class Test##FixtureType##name : public FixtureType {                         \

src/test_lib_json/main.cpp

@@ -1888,7 +1888,7 @@ JSONTEST_FIXTURE_LOCAL(ValueTest, typeChecksThrowExceptions) {
   JSONTEST_ASSERT_THROWS(objVal.asBool());
   JSONTEST_ASSERT_THROWS(arrVal.asBool());
 
-#endif
+#endif // JSON_USE_EXCEPTION
 }
 
 JSONTEST_FIXTURE_LOCAL(ValueTest, offsetAccessors) {
@@ -3323,6 +3323,8 @@ JSONTEST_FIXTURE_LOCAL(CharReaderTest, parseWithDetailError) {
 }
 
 JSONTEST_FIXTURE_LOCAL(CharReaderTest, parseWithStackLimit) {
+#if JSON_USE_EXCEPTION
+
   Json::CharReaderBuilder b;
   Json::Value root;
   char const doc[] = R"({ "property" : "value" })";
@@ -3342,6 +3344,8 @@ JSONTEST_FIXTURE_LOCAL(CharReaderTest, parseWithStackLimit) {
     JSONTEST_ASSERT_THROWS(
         reader->parse(doc, doc + std::strlen(doc), &root, &errs));
   }
+
+#endif // JSON_USE_EXCEPTION
 }
 
 JSONTEST_FIXTURE_LOCAL(CharReaderTest, testOperator) {
@@ -3961,6 +3965,8 @@ JSONTEST_FIXTURE_LOCAL(IteratorTest, indexes) {
 }
 
 JSONTEST_FIXTURE_LOCAL(IteratorTest, constness) {
+#if JSON_USE_EXCEPTION
+
   Json::Value const v;
   JSONTEST_ASSERT_THROWS(
       Json::Value::iterator it(v.begin())); // Compile, but throw.
@@ -3982,6 +3988,8 @@ JSONTEST_FIXTURE_LOCAL(IteratorTest, constness) {
   }
   Json::String expected = R"(" 9","10","11",)";
   JSONTEST_ASSERT_STRING_EQUAL(expected, out.str());
+
+#endif // JSON_USE_EXCEPTION
 }
 
 struct RValueTest : JsonTest::TestCase {};

test/BUILD.bazel

@@ -0,0 +1,20 @@
+filegroup(
+    name = "expected",
+    srcs = glob(["data/**", "jsonchecker/**"], exclude=["**/*.json"]),
+)
+
+[py_test(
+    name = "runjson_%s_test" % "_".join(f.split("/")),
+    srcs = ["runjsontests.py"],
+    main = "runjsontests.py",
+    args = [
+        "--with-json-checker",
+        "$(location //src/jsontestrunner:jsontestrunner)",
+        "$(location :%s)" % f,
+    ],
+    data = [
+        "//src/jsontestrunner:jsontestrunner",
+        ":expected",
+        ":%s" % f,
+    ],
+) for f in glob(["**/*.json"])]

test/runjsontests.py

@@ -66,38 +66,51 @@ class FailError(Exception):
     def __init__(self, msg):
         super(Exception, self).__init__(msg)
 
-def runAllTests(jsontest_executable_path, input_dir = None,
+def runAllTests(jsontest_executable_path, input_path = None,
                  use_valgrind=False, with_json_checker=False,
                  writerClass='StyledWriter'):
-    if not input_dir:
-        input_dir = os.path.join(os.getcwd(), 'data')
-    tests = glob(os.path.join(input_dir, '*.json'))
-    if with_json_checker:
-        all_tests = glob(os.path.join(input_dir, '../jsonchecker', '*.json'))
-        # These tests fail with strict json support, but pass with JsonCPP's
-        # extra leniency features. When adding a new exclusion to this list,
-        # remember to add the test's number and reasoning here:
-        known = ["fail{}.json".format(n) for n in [
-            4, 9, # fail because we allow trailing commas
-            7,    # fails because we allow commas after close
-            8,    # fails because we allow extra close
-            10,   # fails because we allow extra values after close
-            13,   # fails because we allow leading zeroes in numbers
-            18,   # fails because we allow deeply nested values
-            25,   # fails because we allow tab characters in strings
-            27,   # fails because we allow string line breaks
-        ]]
-        test_jsonchecker = [ test for test in all_tests
-                             if os.path.basename(test) not in known]
+    if not input_path:
+        input_path = os.path.join(os.getcwd(), 'data')
 
+    if os.path.isdir(input_path):
+        tests = [
+            os.path.normpath(os.path.abspath(test))
+            for test in glob(os.path.join(input_path, '*.json'))
+        ]
+
+        if with_json_checker:
+            tests += [
+                os.path.normpath(os.path.abspath(test))
+                for test in glob(os.path.join(input_path, '../jsonchecker', '*.json'))
+            ]
     else:
-        test_jsonchecker = []
+        tests = [input_path]
+
+    # These tests fail with strict json support, but pass with JsonCPP's
+    # extra leniency features. When adding a new exclusion to this list,
+    # remember to add the test's number and reasoning here:
+    known = ["fail{}.json".format(n) for n in [
+        4, 9, # fail because we allow trailing commas
+        7,    # fails because we allow commas after close
+        8,    # fails because we allow extra close
+        10,   # fails because we allow extra values after close
+        13,   # fails because we allow leading zeroes in numbers
+        18,   # fails because we allow deeply nested values
+        25,   # fails because we allow tab characters in strings
+        27,   # fails because we allow string line breaks
+    ]]
+
+    tests = [
+        test for test in tests
+        if os.path.basename(test) not in known or
+            os.path.basename(os.path.dirname(test)) != "jsonchecker"
+    ]
 
     failed_tests = []
     valgrind_path = use_valgrind and VALGRIND_CMD or ''
-    for input_path in tests + test_jsonchecker:
+    for input_path in tests:
         expect_failure = os.path.basename(input_path).startswith('fail')
-        is_json_checker_test = input_path in test_jsonchecker
+        is_json_checker_test = os.path.basename(os.path.dirname(input_path)) == "jsonchecker"
         is_parse_only = is_json_checker_test or expect_failure
         is_strict_test = ('_strict_' in os.path.basename(input_path)) or is_json_checker_test
         print('TESTING:', input_path, end=' ')