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//===-- JSONExprTests.cpp - JSON expression unit tests ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "JSONExpr.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
namespace json {
namespace {
std::string s(const Expr &E) { return llvm::formatv("{0}", E).str(); }
std::string sp(const Expr &E) { return llvm::formatv("{0:2}", E).str(); }
TEST(JSONExprTests, Types) {
EXPECT_EQ("true", s(true));
EXPECT_EQ("null", s(nullptr));
EXPECT_EQ("2.5", s(2.5));
EXPECT_EQ(R"("foo")", s("foo"));
EXPECT_EQ("[1,2,3]", s({1, 2, 3}));
EXPECT_EQ(R"({"x":10,"y":20})", s(obj{{"x", 10}, {"y", 20}}));
}
TEST(JSONExprTests, Constructors) {
// Lots of edge cases around empty and singleton init lists.
EXPECT_EQ("[[[3]]]", s({{{3}}}));
EXPECT_EQ("[[[]]]", s({{{}}}));
EXPECT_EQ("[[{}]]", s({{obj{}}}));
EXPECT_EQ(R"({"A":{"B":{}}})", s(obj{{"A", obj{{"B", obj{}}}}}));
EXPECT_EQ(R"({"A":{"B":{"X":"Y"}}})",
s(obj{{"A", obj{{"B", obj{{"X", "Y"}}}}}}));
}
TEST(JSONExprTests, StringOwnership) {
char X[] = "Hello";
Expr Alias = static_cast<const char *>(X);
X[1] = 'a';
EXPECT_EQ(R"("Hallo")", s(Alias));
std::string Y = "Hello";
Expr Copy = Y;
Y[1] = 'a';
EXPECT_EQ(R"("Hello")", s(Copy));
}
TEST(JSONExprTests, CanonicalOutput) {
// Objects are sorted (but arrays aren't)!
EXPECT_EQ(R"({"a":1,"b":2,"c":3})", s(obj{{"a", 1}, {"c", 3}, {"b", 2}}));
EXPECT_EQ(R"(["a","c","b"])", s({"a", "c", "b"}));
EXPECT_EQ("3", s(3.0));
}
TEST(JSONExprTests, Escaping) {
std::string test = {
0, // Strings may contain nulls.
'\b', '\f', // Have mnemonics, but we escape numerically.
'\r', '\n', '\t', // Escaped with mnemonics.
'S', '\"', '\\', // Printable ASCII characters.
'\x7f', // Delete is not escaped.
'\xce', '\x94', // Non-ASCII UTF-8 is not escaped.
};
EXPECT_EQ(R"("\u0000\u0008\u000c\r\n\tS\"\\)"
u8"\x7fΔ\"",
s(test));
EXPECT_EQ(R"({"object keys are\nescaped":true})",
s(obj{{"object keys are\nescaped", true}}));
}
TEST(JSONExprTests, PrettyPrinting) {
EXPECT_EQ(
R"({
"empty_array": [],
"empty_object": {},
"full_array": [
1,
null
],
"full_object": {
"nested_array": [
{
"property": "value"
}
]
}
})",
sp(obj{
{"empty_object", obj{}},
{"empty_array", {}},
{"full_array", {1, nullptr}},
{"full_object",
obj{
{"nested_array",
{obj{
{"property", "value"},
}}},
}},
}));
}
} // namespace
} // namespace json
} // namespace clangd
} // namespace clang
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