native test framework

std/testing/testing.bro

@@ -0,0 +1,39 @@
+debug :: import "@std/debug"
+
+Error :: enum {
+	expectation_failed
+}
+
+SourceLocation :: struct {
+	file   []u8
+	line   usize
+	column usize
+}
+
+expect func(condition bool, location SourceLocation) void ! Error {
+	if (!condition) {
+		debug.print("{s}:{d}:{d}: expectation failed\n", {location.file, location.line, location.column})
+		return .expectation_failed
+	}
+}
+
+expect_equal func($T type, expected, actual T, location SourceLocation) void ! Error {
+	if (expected != actual) {
+		debug.print("{s}:{d}:{d}: expected {}, found {}\n", {location.file, location.line, location.column, expected, actual})
+		return .expectation_failed
+	}
+}
+
+run func(name []u8, callback *func() void ! Error) bool {
+	debug.print("RUN  {s}\n", {name,})
+	callback() catch |_| {
+		debug.print("FAIL {s}\n", {name,})
+		return false
+	}
+	debug.print("PASS {s}\n", {name,})
+	return true
+}
+
+summary func(passed, failed i32) void {
+	debug.print("{d} passed, {d} failed\n", {passed, failed})
+}