test: add build option for debugging

Signed-off-by: Tw <weii.tan>
tw4452852 · May 9, 2023 · aa1b356 · aa1b356
1 parent bad505e
commit aa1b356
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Showing 5 changed files with 10 additions and 10 deletions.
diff --git a/build.zig b/build.zig
@@ -3,7 +3,7 @@ const builtin = @import("builtin");
 const fs = std.fs;
 const Builder = std.build.Builder;
 
-const debugging = true;
+const debugging = false;
 
 fn create_bpf_prog(ctx: *const Ctx, src_path: ?[]const u8) *std.build.CompileStep {
     const name = fs.path.stem(src_path orelse "?");
@@ -203,6 +203,11 @@ pub fn build(b: *Builder) !void {
         });
     }
 
+    // add debug option to test
+    const tests_options = b.addOptions();
+    exe_tests.addOptions("build_options", tests_options);
+    tests_options.addOption(bool, "debug", debugging);
+
     const run_test_step = b.step("test", "Build unit tests");
     run_test_step.dependOn(&install_test.step);
 }
diff --git a/src/tests/array.zig b/src/tests/array.zig
@@ -19,11 +19,6 @@ test "array" {
     }
     defer libbpf.bpf_object__close(obj);
 
-    var _map = libbpf.bpf_object__next_map(obj, null);
-    while (_map) |map| : (_map = libbpf.bpf_object__next_map(obj, _map)) {
-        print("find map: {s}\n", .{libbpf.bpf_map__name(map)});
-    }
-
     var ret = libbpf.bpf_object__load(obj);
     if (ret != 0) {
         print("failed to load bpf object: {}\n", .{std.os.errno(-1)});
@@ -32,7 +27,6 @@ test "array" {
 
     if (libbpf.bpf_object__next_program(obj, null)) |prog| {
         var map = libbpf.bpf_object__next_map(obj, null).?;
-        print("find prog: {s}, map: {s}\n", .{ libbpf.bpf_program__name(prog), libbpf.bpf_map__name(map) });
 
         // map[0] = 1
         var k: u32 = 0;

diff --git a/src/tests/hash.zig b/src/tests/hash.zig
@@ -27,7 +27,6 @@ test "hash" {
 
     if (libbpf.bpf_object__next_program(obj, null)) |prog| {
         var map = libbpf.bpf_object__next_map(obj, null).?;
-        print("find prog: {s}, map: {s}\n", .{ libbpf.bpf_program__name(prog), libbpf.bpf_map__name(map) });
 
         // map[0] = 1
         var k: u32 = 0;

diff --git a/src/tests/root.zig b/src/tests/root.zig
@@ -4,8 +4,11 @@ pub const libbpf = @cImport({
     @cInclude("libbpf.h");
     @cInclude("bpf.h");
 });
+const build_options = @import("build_options");
+
+pub fn dbg_printf(level: libbpf.libbpf_print_level, fmt: [*c]const u8, args: [*c]libbpf.__va_list_tag) callconv(.C) c_int {
+    if (!build_options.debug and level == libbpf.LIBBPF_DEBUG) return 0;
 
-pub fn dbg_printf(_: libbpf.libbpf_print_level, fmt: [*c]const u8, args: [*c]libbpf.__va_list_tag) callconv(.C) c_int {
     return libbpf.vdprintf(std.io.getStdErr().handle, fmt, args);
 }
 

diff --git a/src/tests/tracepoint.zig b/src/tests/tracepoint.zig
@@ -27,7 +27,6 @@ test "tracepoint" {
 
     if (libbpf.bpf_object__next_program(obj, null)) |prog| {
         var map = libbpf.bpf_object__next_map(obj, null).?;
-        print("find prog: {s}, map: {s}\n", .{ libbpf.bpf_program__name(prog), libbpf.bpf_map__name(map) });
 
         const link = libbpf.bpf_program__attach(prog) orelse {
             print("failed to attach prog {s}: {}\n", .{ libbpf.bpf_program__name(prog), std.os.errno(-1) });