zig

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test_allocator.zig (600B) - Raw

      1 const std = @import("std");
      2 const Allocator = std.mem.Allocator;
      3 const expect = std.testing.expect;
      4 
      5 test "using an allocator" {
      6     var buffer: [100]u8 = undefined;
      7     var fba = std.heap.FixedBufferAllocator.init(&buffer);
      8     const allocator = fba.allocator();
      9     const result = try concat(allocator, "foo", "bar");
     10     try expect(std.mem.eql(u8, "foobar", result));
     11 }
     12 
     13 fn concat(allocator: Allocator, a: []const u8, b: []const u8) ![]u8 {
     14     const result = try allocator.alloc(u8, a.len + b.len);
     15     @memcpy(result[0..a.len], a);
     16     @memcpy(result[a.len..], b);
     17     return result;
     18 }
     19 
     20 // test