zls/tests/context.zig

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const std = @import("std");
const zls = @import("zls");
const headerPkg = zls.header;
const Server = zls.Server;
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const initialize_msg =
\\{"processId":6896,"clientInfo":{"name":"vscode","version":"1.46.1"},"rootPath":null,"rootUri":null,"capabilities":{"workspace":{"applyEdit":true,"workspaceEdit":{"documentChanges":true,"resourceOperations":["create","rename","delete"],"failureHandling":"textOnlyTransactional"},"didChangeConfiguration":{"dynamicRegistration":true},"didChangeWatchedFiles":{"dynamicRegistration":true},"symbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"tagSupport":{"valueSet":[1]}},"executeCommand":{"dynamicRegistration":true},"configuration":true,"workspaceFolders":true},"textDocument":{"publishDiagnostics":{"relatedInformation":true,"versionSupport":false,"tagSupport":{"valueSet":[1,2]},"complexDiagnosticCodeSupport":true},"synchronization":{"dynamicRegistration":true,"willSave":true,"willSaveWaitUntil":true,"didSave":true},"completion":{"dynamicRegistration":true,"contextSupport":true,"completionItem":{"snippetSupport":true,"commitCharactersSupport":true,"documentationFormat":["markdown","plaintext"],"deprecatedSupport":true,"preselectSupport":true,"tagSupport":{"valueSet":[1]},"insertReplaceSupport":true},"completionItemKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25]}},"hover":{"dynamicRegistration":true,"contentFormat":["markdown","plaintext"]},"signatureHelp":{"dynamicRegistration":true,"signatureInformation":{"documentationFormat":["markdown","plaintext"],"parameterInformation":{"labelOffsetSupport":true}},"contextSupport":true},"definition":{"dynamicRegistration":true,"linkSupport":true},"references":{"dynamicRegistration":true},"documentHighlight":{"dynamicRegistration":true},"documentSymbol":{"dynamicRegistration":true,"symbolKind":{"valueSet":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]},"hierarchicalDocumentSymbolSupport":true,"tagSupport":{"valueSet":[1]}},"codeAction":{"dynamicRegistration":true,"isPreferredSupport":true,"codeActionLiteralSupport":{"codeActionKind":{"valueSet":["","quickfix","refactor","refactor.extract","refactor.inline","refactor.rewrite","source","source.organizeImports"]}}},"codeLens":{"dynamicRegistration":true},"formatting":{"dynamicRegistration":true},"rangeFormatting":{"dynamicRegistration":true},"onTypeFormatting":{"dynamicRegistration":true},"rename":{"dynamicRegistration":true,"prepareSupport":true},"documentLink":{"dynamicRegistration":true,"tooltipSupport":true},"typeDefinition":{"dynamicRegistration":true,"linkSupport":true},"implementation":{"dynamicRegistration":true,"linkSupport":true},"colorProvider":{"dynamicRegistration":true},"foldingRange":{"dynamicRegistration":true,"rangeLimit":5000,"lineFoldingOnly":true},"declaration":{"dynamicRegistration":true,"linkSupport":true},"selectionRange":{"dynamicRegistration":true},"semanticTokens":{"dynamicRegistration":true,"tokenTypes":["comment","keyword","number","regexp","operator","namespace","type","struct","class","interface","enum","typeParameter","function","member","macro","variable","parameter","property","label"],"tokenModifiers":["declaration","documentation","static","abstract","deprecated","readonly"]}},"window":{"workDoneProgress":true}},"trace":"off","workspaceFolders":[{"uri":"file://./tests", "name":"root"}]}
;
const allocator = std.testing.allocator;
pub const Context = struct {
server: Server,
request_id: u32 = 1,
pub fn init() !Context {
var context = Context{
.server = try Server.init(
allocator,
.{},
null,
.debug,
),
};
try context.request("initialize", initialize_msg, null);
try context.request("initialized", "{}", null);
return context;
}
pub fn deinit(self: *Context) void {
self.request("shutdown", "{}", null) catch {};
self.server.deinit();
}
pub fn requestAlloc(
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self: *Context,
method: []const u8,
params: []const u8,
) ![]const u8 {
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var output = std.ArrayListUnmanaged(u8){};
defer output.deinit(allocator);
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// create the request
self.request_id += 1;
const req = try std.fmt.allocPrint(allocator,
\\{{"jsonrpc":"2.0","id":{},"method":"{s}","params":{s}}}
, .{ self.request_id, method, params });
defer allocator.free(req);
// send the request to the server
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try self.server.processJsonRpc(output.writer(allocator), req);
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// get the output from the server
var buffer_stream = std.io.fixedBufferStream(output.items);
const header = try headerPkg.readRequestHeader(allocator, buffer_stream.reader());
defer header.deinit(allocator);
var response_bytes = try allocator.alloc(u8, header.content_length);
errdefer allocator.free(response_bytes);
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const content_length = try buffer_stream.reader().readAll(response_bytes);
try std.testing.expectEqual(content_length, header.content_length);
return response_bytes;
}
pub fn request(
self: *Context,
method: []const u8,
params: []const u8,
expect: ?[]const u8,
) !void {
const response_bytes = try self.requestAlloc(method, params);
defer allocator.free(response_bytes);
const expected = expect orelse return;
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// parse the response
var parser = std.json.Parser.init(allocator, false);
defer parser.deinit();
var tree = try parser.parse(response_bytes);
defer tree.deinit();
const response = tree.root.Object;
// assertions
try std.testing.expectEqualStrings("2.0", response.get("jsonrpc").?.String);
try std.testing.expectEqual(self.request_id, @intCast(u32, response.get("id").?.Integer));
try std.testing.expect(!response.contains("error"));
const result_json = try std.json.stringifyAlloc(allocator, response.get("result").?, .{});
defer allocator.free(result_json);
try std.testing.expectEqualStrings(expected, result_json);
}
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};