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Example of more powerful matcher being useful

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This commit is contained in:
Evan Driscoll 2018-06-03 22:41:42 -05:00
parent 5f0870ef34
commit c7a64b8846
1 changed files with 48 additions and 0 deletions
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48
test/src/unit-fancy-serialization.cpp
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@ -28,10 +28,12 @@ SOFTWARE.
*/
#include "catch.hpp"
#include <iostream>
#include <nlohmann/json.hpp>
using nlohmann::json;
using nlohmann::json_pointer;
using nlohmann::fancy_dump;
using nlohmann::fancy_serializer_style;
using nlohmann::fancy_serializer_stylizer;
@ -276,6 +278,52 @@ TEST_CASE("serialization")
"one line": {"still one line":[1,2]}
})"));
}
SECTION("example of more sophisticated matcher")
{
fancy_serializer_stylizer stylizer;
stylizer.get_default_style().set_old_multiline();
stylizer.register_style(
[] (const json_pointer<json>& context)
{
// Matches if context[-2] is "each elem on one line"
return (context.cend() - context.cbegin() >= 2)
&& (*(context.cend() - 2) == "each elem on one line");
}
).space_after_comma = true;
auto str = fancy_to_string(
{
{
"each elem on one line", {
{1, 2, 3, 4, 5},
{1, 2, 3, 4, 5}
},
},
{
"fully multiline", {
{1, 2, 3},
}
}
},
stylizer);
CHECK(str == dedent(R"(
{
"each elem on one line": [
[1, 2, 3, 4, 5],
[1, 2, 3, 4, 5]
],
"fully multiline": [
[
1,
2,
3
]
]
})"));
}
}
SECTION("Spaces after commas are controllable separately from multiline")