add tests

3 files changed, 144 insertions, 4 deletions

diff --git a/test/add.h b/test/add.h
deleted file mode 100644
index 6295ab95cd..0000000000
--- a/test/add.h
+++ /dev/null
@@ -1 +0,0 @@
-int add(int a, int b);
diff --git a/test/add.zig b/test/add.zig
deleted file mode 100644
index bb0175bff2..0000000000
--- a/test/add.zig
+++ /dev/null
@@ -1,3 +0,0 @@
-export fn add(a: i32, b: i32) -> i32 {
-    return a + b;
-}
diff --git a/test/standalone.cpp b/test/standalone.cpp
new file mode 100644
index 0000000000..1aec557686
--- /dev/null
+++ b/test/standalone.cpp
@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2015 Andrew Kelley
+ *
+ * This file is part of zig, which is MIT licensed.
+ * See http://opensource.org/licenses/MIT
+ */
+
+#include "list.hpp"
+#include "buffer.hpp"
+#include "os.hpp"
+
+#include <stdio.h>
+
+struct TestSourceFile {
+    const char *relative_path;
+    const char *text;
+};
+
+struct TestCase {
+    const char *case_name;
+    const char *output;
+    const char *source;
+    ZigList<const char *> compile_errors;
+    ZigList<const char *> compiler_args;
+    ZigList<const char *> program_args;
+};
+
+ZigList<TestCase*> test_cases = {0};
+const char *tmp_source_path = ".tmp_source.zig";
+const char *tmp_exe_path = "./.tmp_exe";
+
+static void add_simple_case(const char *case_name, const char *source, const char *output) {
+    TestCase *test_case = allocate<TestCase>(1);
+    test_case->case_name = case_name;
+    test_case->output = output;
+    test_case->source = source;
+
+    test_case->compiler_args.append("build");
+    test_case->compiler_args.append(tmp_source_path);
+    test_case->compiler_args.append("--output");
+    test_case->compiler_args.append(tmp_exe_path);
+    test_case->compiler_args.append("--release");
+    test_case->compiler_args.append("--strip");
+
+    test_cases.append(test_case);
+}
+
+static void add_all_test_cases(void) {
+    add_simple_case("hello world with libc", R"SOURCE(
+        #link("c")
+        extern {
+            fn puts(s: *mut u8) -> i32;
+            fn exit(code: i32) -> unreachable;
+        }
+
+        fn _start() -> unreachable {
+            puts("Hello, world!");
+            exit(0);
+        }
+    )SOURCE", "Hello, world!\n");
+
+    add_simple_case("function call", R"SOURCE(
+        #link("c")
+        extern {
+            fn puts(s: *mut u8) -> i32;
+            fn exit(code: i32) -> unreachable;
+        }
+
+        fn _start() -> unreachable {
+            this_is_a_function();
+        }
+
+        fn this_is_a_function() -> unreachable {
+            puts("OK");
+            exit(0);
+        }
+    )SOURCE", "OK\n");
+}
+
+static void run_test(TestCase *test_case) {
+    os_write_file(buf_create_from_str(tmp_source_path), buf_create_from_str(test_case->source));
+
+    Buf zig_stderr = BUF_INIT;
+    Buf zig_stdout = BUF_INIT;
+    int return_code;
+    os_exec_process("./zig", test_case->compiler_args, &return_code, &zig_stderr, &zig_stdout);
+
+    if (return_code != 0) {
+        printf("\nCompile failed with return code %d:\n", return_code);
+        printf("zig");
+        for (int i = 0; i < test_case->compiler_args.length; i += 1) {
+            printf(" %s", test_case->compiler_args.at(i));
+        }
+        printf("\n");
+        printf("%s\n", buf_ptr(&zig_stderr));
+        exit(1);
+    }
+
+    Buf program_stderr = BUF_INIT;
+    Buf program_stdout = BUF_INIT;
+    os_exec_process(tmp_exe_path, test_case->program_args, &return_code, &program_stderr, &program_stdout);
+
+    if (return_code != 0) {
+        printf("\nProgram exited with return code %d:\n", return_code);
+        printf("zig");
+        for (int i = 0; i < test_case->compiler_args.length; i += 1) {
+            printf(" %s", test_case->compiler_args.at(i));
+        }
+        printf("\n");
+        printf("%s\n", buf_ptr(&program_stderr));
+        exit(1);
+    }
+
+    if (!buf_eql_str(&program_stdout, test_case->output)) {
+        printf("\n");
+        printf("==== Test failed. Expected output: ====\n");
+        printf("%s\n", test_case->output);
+        printf("========= Actual output: ==============\n");
+        printf("%s\n", buf_ptr(&program_stdout));
+        printf("=======================================\n");
+        exit(1);
+    }
+}
+
+static void run_all_tests(void) {
+    for (int i = 0; i < test_cases.length; i += 1) {
+        TestCase *test_case = test_cases.at(i);
+        printf("Test %d/%d %s...", i + 1, test_cases.length, test_case->case_name);
+        run_test(test_case);
+        printf("OK\n");
+    }
+    printf("%d tests passed.\n", test_cases.length);
+}
+
+static void cleanup(void) {
+    remove(tmp_source_path);
+    remove(tmp_exe_path);
+}
+
+int main(int argc, char **argv) {
+    add_all_test_cases();
+    run_all_tests();
+    cleanup();
+}