Initial project import

tools/v/vlib/v3/tests/test_v3.vsh

@@ -0,0 +1,128 @@
+#!/usr/local/bin/v
+
+import os
+
+const vexe = @VEXE
+const v1exe = 'v'
+const tests_dir = os.dir(@FILE)
+const v3_dir = os.dir(tests_dir)
+const test_v = os.join_path(tests_dir, 'test_all_lang_features.v')
+const v3_src = os.join_path(v3_dir, 'v3.v')
+
+fn run(cmd string) os.Result {
+	println('> ${cmd}')
+	return os.execute(cmd)
+}
+
+fn build_v3() string {
+	v3_bin := os.join_path(os.temp_dir(), 'v3_test_runner')
+	cmd := '${vexe} -o ${v3_bin} ${v3_src}'
+	r := run(cmd)
+	if r.exit_code != 0 {
+		eprintln('FAIL: could not build v3')
+		eprintln(r.output)
+		exit(1)
+	}
+	return v3_bin
+}
+
+fn run_v1() string {
+	v1_bin := '${os.temp_dir()}/v1_test'
+	r := run('${v1exe} -enable-globals -o ${v1_bin} ${test_v}')
+	if r.exit_code != 0 {
+		eprintln('FAIL: global v compilation failed')
+		eprintln(r.output)
+		exit(1)
+	}
+	r2 := run(v1_bin)
+	if r2.exit_code != 0 {
+		eprintln('FAIL: global v binary crashed (exit ${r2.exit_code})')
+		exit(1)
+	}
+	return r2.output
+}
+
+fn run_v3_c(v3_bin string) string {
+	v3c_bin := '${os.temp_dir()}/v3c_test'
+	r := run('${v3_bin} ${test_v} -b c -o ${v3c_bin}')
+	if r.exit_code != 0 {
+		eprintln('FAIL: v3 C backend compilation failed')
+		eprintln(r.output)
+		exit(1)
+	}
+	r2 := run(v3c_bin)
+	if r2.exit_code != 0 {
+		eprintln('FAIL: v3 C binary crashed (exit ${r2.exit_code})')
+		exit(1)
+	}
+	return r2.output
+}
+
+fn run_v3_arm64(v3_bin string) string {
+	v3arm_bin := '${os.temp_dir()}/v3arm_test'
+	r := run('${v3_bin} ${test_v} -b arm64 -o ${v3arm_bin}')
+	if r.exit_code != 0 {
+		eprintln('FAIL: v3 arm64 backend compilation failed')
+		eprintln(r.output)
+		exit(1)
+	}
+	r2 := run(v3arm_bin)
+	if r2.exit_code != 0 {
+		eprintln('FAIL: v3 arm64 binary crashed (exit ${r2.exit_code})')
+		exit(1)
+	}
+	return r2.output
+}
+
+// Build v3
+v3_bin := build_v3()
+println('built v3: ${v3_bin}')
+
+// Run all three
+v1_out := run_v1()
+println('v1:       OK')
+
+v3c_out := run_v3_c(v3_bin)
+println('v3 C:     OK')
+
+v3arm_out := run_v3_arm64(v3_bin)
+println('v3 arm64: OK')
+
+// Compare
+mut ok := true
+
+if v3c_out != v1_out {
+	eprintln('FAIL: v3 C output differs from v1')
+	v1_lines := v1_out.split_into_lines()
+	v3c_lines := v3c_out.split_into_lines()
+	for i in 0 .. v1_lines.len {
+		if i < v3c_lines.len && v1_lines[i] != v3c_lines[i] {
+			eprintln('  line ${i + 1}: v1="${v1_lines[i]}" v3c="${v3c_lines[i]}"')
+		}
+	}
+	if v1_lines.len != v3c_lines.len {
+		eprintln('  v1: ${v1_lines.len} lines, v3c: ${v3c_lines.len} lines')
+	}
+	ok = false
+}
+
+if v3arm_out != v1_out {
+	eprintln('FAIL: v3 arm64 output differs from v1')
+	v1_lines := v1_out.split_into_lines()
+	v3arm_lines := v3arm_out.split_into_lines()
+	for i in 0 .. v1_lines.len {
+		if i < v3arm_lines.len && v1_lines[i] != v3arm_lines[i] {
+			eprintln('  line ${i + 1}: v1="${v1_lines[i]}" arm64="${v3arm_lines[i]}"')
+		}
+	}
+	if v1_lines.len != v3arm_lines.len {
+		eprintln('  v1: ${v1_lines.len} lines, arm64: ${v3arm_lines.len} lines')
+	}
+	ok = false
+}
+
+if ok {
+	println('=== ALL BACKENDS MATCH (${v1_out.split_into_lines().len} lines) ===')
+} else {
+	exit(1)
+}