Tests for JSON utils

NixOS · Mar 31, 2024 · 8525624 · 8525624
1 parent fbd750d
commit 8525624
Showing 1 changed file with 101 additions and 0 deletions.
diff --git a/tests/unit/libutil/json-utils.cc b/tests/unit/libutil/json-utils.cc
@@ -3,6 +3,7 @@
 
 #include <gtest/gtest.h>
 
+#include "error.hh"
 #include "json-utils.hh"
 
 namespace nix {
@@ -55,4 +56,104 @@ TEST(from_json, vectorOfOptionalInts) {
     ASSERT_FALSE(vals.at(1).has_value());
 }
 
+TEST(valueAt, simpleObject) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "hello": "world" })");
+
+    ASSERT_EQ(valueAt(simple, "hello"), "world");
+
+    nlohmann::json nested = nlohmann::json::parse(R"({ "hello": { "world": "" } })");
+
+    auto & nestedObject = valueAt(nested, "hello");
+
+    ASSERT_EQ(valueAt(nestedObject, "world"), "");
+}
+
+TEST(valueAt, missingKey) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "hello": { "nested": "world" } })");
+
+    ASSERT_THROW(valueAt(json, "foo"), Error);
+}
+
+TEST(getObject, rightAssertions) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "object": {} })");
+
+    ASSERT_EQ(getObject(valueAt(simple, "object")), nlohmann::json::parse("{}"));
+
+    nlohmann::json nested = nlohmann::json::parse(R"({ "object": { "object": {} } })");
+
+    auto & nestedObject = getObject(valueAt(nested, "object"));
+
+    ASSERT_EQ(nestedObject, nlohmann::json::parse(R"({ "object": {} })"));
+    ASSERT_EQ(getObject(valueAt(nestedObject, "object")), nlohmann::json::parse("{}"));
+}
+
+TEST(getObject, wrongAssertions) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "object": {}, "array": [], "string": "", "int": 0, "boolean": false })");
+
+    ASSERT_THROW(getObject(valueAt(json, "array")), Error);
+    ASSERT_THROW(getObject(valueAt(json, "string")), Error);
+    ASSERT_THROW(getObject(valueAt(json, "int")), Error);
+    ASSERT_THROW(getObject(valueAt(json, "boolean")), Error);
+}
+
+TEST(getArray, rightAssertions) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "array": [] })");
+
+    ASSERT_EQ(getArray(valueAt(simple, "array")), nlohmann::json::parse("[]"));
+}
+
+TEST(getArray, wrongAssertions) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "object": {}, "array": [], "string": "", "int": 0, "boolean": false })");
+
+    ASSERT_THROW(getArray(valueAt(json, "object")), Error);
+    ASSERT_THROW(getArray(valueAt(json, "string")), Error);
+    ASSERT_THROW(getArray(valueAt(json, "int")), Error);
+    ASSERT_THROW(getArray(valueAt(json, "boolean")), Error);
+}
+
+TEST(getString, rightAssertions) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "string": "" })");
+
+    ASSERT_EQ(getString(valueAt(simple, "string")), "");
+}
+
+TEST(getString, wrongAssertions) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "object": {}, "array": [], "string": "", "int": 0, "boolean": false })");
+
+    ASSERT_THROW(getString(valueAt(json, "object")), Error);
+    ASSERT_THROW(getString(valueAt(json, "array")), Error);
+    ASSERT_THROW(getString(valueAt(json, "int")), Error);
+    ASSERT_THROW(getString(valueAt(json, "boolean")), Error);
+}
+
+TEST(getInteger, rightAssertions) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "int": 0 })");
+
+    ASSERT_EQ(getInteger(valueAt(simple, "int")), 0);
+}
+
+TEST(getInteger, wrongAssertions) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "object": {}, "array": [], "string": "", "int": 0, "boolean": false })");
+
+    ASSERT_THROW(getInteger(valueAt(json, "object")), Error);
+    ASSERT_THROW(getInteger(valueAt(json, "array")), Error);
+    ASSERT_THROW(getInteger(valueAt(json, "string")), Error);
+    ASSERT_THROW(getInteger(valueAt(json, "boolean")), Error);
+}
+
+TEST(getBoolean, rightAssertions) {
+    nlohmann::json simple = nlohmann::json::parse(R"({ "boolean": false })");
+
+    ASSERT_EQ(getBoolean(valueAt(simple, "boolean")), false);
+}
+
+TEST(getBoolean, wrongAssertions) {
+    nlohmann::json json = nlohmann::json::parse(R"({ "object": {}, "array": [], "string": "", "int": 0, "boolean": false })");
+
+    ASSERT_THROW(getBoolean(valueAt(json, "object")), Error);
+    ASSERT_THROW(getBoolean(valueAt(json, "array")), Error);
+    ASSERT_THROW(getBoolean(valueAt(json, "string")), Error);
+    ASSERT_THROW(getBoolean(valueAt(json, "int")), Error);
+}
+
 } /* namespace nix */