Add tests to ipv4 parsing

Signed-off-by: emneo <emneo@kreog.com>

build.zig

@@ -97,6 +97,8 @@ pub fn build(b: *std.Build) !void {
         .target = std_target,
         .optimize = optimize,
     });
+    unit_tests.root_module.addOptions("build_config", options);
+    unit_tests.root_module.addImport("ini", pkg.module("ini"));
 
     const run_unit_tests = b.addRunArtifact(unit_tests);
     test_step.dependOn(&run_unit_tests.step);

src/config.zig

@@ -138,3 +138,31 @@ pub fn parse(filepath: []const u8, allocator: std.mem.Allocator) !config {
         try map_value(f, &tmp);
     return map_opt_struct_to_struct(tmp_config, config, &tmp);
 }
+
+test "ipv4 loopback default port" {
+    const parsed = try parse_full_ip("127.0.0.1:2105");
+    try std.testing.expectEqual(parsed.getPort(), 2105);
+    try std.testing.expectEqual(parsed.in.sa.addr, 0x100007f);
+}
+
+test "ipv4 loopback random port" {
+    const parsed = try parse_full_ip("127.0.0.1:0");
+    try std.testing.expectEqual(parsed.getPort(), 0);
+    try std.testing.expectEqual(parsed.in.sa.addr, 0x100007f);
+}
+
+test "ipv4 wildcard default port" {
+    const parsed = try parse_full_ip("0.0.0.0:2105");
+    try std.testing.expectEqual(parsed.getPort(), 2105);
+    try std.testing.expectEqual(parsed.in.sa.addr, 0);
+}
+
+test "ipv4 invalid no port" {
+    const parsed = parse_full_ip("127.0.0.1");
+    try std.testing.expectError(error.BadKey, parsed);
+}
+
+test "ipv4 invalid no ip" {
+    const parsed = parse_full_ip("2105");
+    try std.testing.expectError(error.BadKey, parsed);
+}

src/main.zig

@@ -14,3 +14,7 @@ pub fn main() !void {
     const conf = try config.parse("config.ini", allocator);
     std.debug.print("Got conf: {any}\n", .{conf});
 }
+
+test {
+    std.testing.refAllDecls(@This());
+}