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test_runner2.zig
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test_runner2.zig
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// Modded from from https://gist.github.com/karlseguin/c6bea5b35e4e8d26af6f81c22cb5d76b
// in your build.zig, you can specify a custom test runner:
// const tests = b.addTest(.{
// .target = target,
// .optimize = optimize,
// .test_runner = "test_runner.zig", // add this line
// .root_source_file = .{ .path = "src/main.zig" },
// });
const std = @import("std");
const builtin = @import("builtin");
const BORDER = "=" ** 80;
const Status = enum {
pass,
fail,
skip,
text,
};
fn getenvOwned(alloc: std.mem.Allocator, key: []const u8) ?[]u8 {
const v = std.process.getEnvVarOwned(alloc, key) catch |err| {
if (err == error.EnvironmentVariableNotFound) {
return null;
}
std.log.warn("failed to get env var {s} due to err {}", .{ key, err });
return null;
};
return v;
}
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{ .stack_trace_frames = 12 }){};
const alloc = gpa.allocator();
const fail_first = blk: {
if (getenvOwned(alloc, "TEST_FAIL_FIRST")) |e| {
defer alloc.free(e);
break :blk std.mem.eql(u8, e, "true");
}
break :blk false;
};
const filter = getenvOwned(alloc, "TEST_FILTER");
defer if (filter) |f| alloc.free(f);
const printer = Printer.init();
printer.fmt("\r\x1b[0K", .{}); // beginning of line and clear to end of line
var pass: usize = 0;
var fail: usize = 0;
var skip: usize = 0;
var leak: usize = 0;
for (builtin.test_functions) |t| {
std.testing.allocator_instance = .{};
var status = Status.pass;
if (filter) |f| {
if (std.mem.indexOf(u8, t.name, f) == null) {
continue;
}
}
const test_name = t.name[5..];
printer.fmt("Testing {s}: ", .{test_name});
const result = t.func();
if (std.testing.allocator_instance.deinit() == .leak) {
leak += 1;
printer.status(.fail, "\n{s}\n\"{s}\" - Memory Leak\n{s}\n", .{ BORDER, test_name, BORDER });
}
if (result) |_| {
pass += 1;
} else |err| {
switch (err) {
error.SkipZigTest => {
skip += 1;
status = .skip;
},
else => {
status = .fail;
fail += 1;
printer.status(.fail, "\n{s}\n\"{s}\" - {s}\n{s}\n", .{ BORDER, test_name, @errorName(err), BORDER });
if (@errorReturnTrace()) |trace| {
std.debug.dumpStackTrace(trace.*);
}
if (fail_first) {
break;
}
},
}
}
printer.status(status, "[{s}]\n", .{@tagName(status)});
}
const total_tests = pass + fail;
const status: Status = if (fail == 0) .pass else .fail;
printer.status(status, "\n{d} of {d} test{s} passed\n", .{ pass, total_tests, if (total_tests != 1) "s" else "" });
if (skip > 0) {
printer.status(.skip, "{d} test{s} skipped\n", .{ skip, if (skip != 1) "s" else "" });
}
if (leak > 0) {
printer.status(.fail, "{d} test{s} leaked\n", .{ leak, if (leak != 1) "s" else "" });
}
std.posix.exit(if (fail == 0) 0 else 1);
}
const Printer = struct {
out: std.fs.File.Writer,
fn init() Printer {
return .{
.out = std.io.getStdErr().writer(),
};
}
fn fmt(self: Printer, comptime format: []const u8, args: anytype) void {
std.fmt.format(self.out, format, args) catch unreachable;
}
fn status(self: Printer, s: Status, comptime format: []const u8, args: anytype) void {
const color = switch (s) {
.pass => "\x1b[32m",
.fail => "\x1b[31m",
.skip => "\x1b[33m",
else => "",
};
const out = self.out;
out.writeAll(color) catch @panic("writeAll failed?!");
std.fmt.format(out, format, args) catch @panic("std.fmt.format failed?!");
self.fmt("\x1b[0m", .{});
}
};