From 28c6425e4ed1cd2eab538e7cba08c18aa83d8af5 Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@spawned.biz>
Date: Wed, 10 Sep 2025 23:57:26 +0200
Subject: Improve test coverage of io and unicode

---
 test/io.cc | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 59 insertions(+), 1 deletion(-)

(limited to 'test/io.cc')

diff --git a/test/io.cc b/test/io.cc
index ad192ed..23c10d4 100644
--- a/test/io.cc
+++ b/test/io.cc
@@ -1,6 +1,7 @@
 #include <gtest/gtest.h>
 
 #include "io.hh"
+#include "io_test_helper.hh"
 
 #include <cstdlib>
 #include <cerrno>
@@ -105,7 +106,7 @@ class IoTest : public testing::Test {
   }
 
  private:
-  int dirfd_;
+  int dirfd_{-1};
   std::string tmpdir_;
 };
 
@@ -128,6 +129,16 @@ TEST_F(IoTest, read_empty) {
   EXPECT_EQ(0, ret2.value());
 }
 
+TEST_F(IoTest, skip_empty) {
+  touch("test");
+
+  auto ret = io::openat(dirfd(), "test");
+  ASSERT_TRUE(ret.has_value());
+  auto ret2 = ret.value()->skip(10);
+  ASSERT_TRUE(ret2.has_value());
+  EXPECT_EQ(0, ret2.value());
+}
+
 TEST_F(IoTest, read) {
   touch("test", "hello world");
 
@@ -140,3 +151,50 @@ TEST_F(IoTest, read) {
   tmp.resize(ret2.value());
   EXPECT_EQ("hello world", tmp);
 }
+
+TEST_F(IoTest, skip) {
+  touch("test", "hello world");
+
+  auto ret = io::openat(dirfd(), "test");
+  ASSERT_TRUE(ret.has_value());
+  auto ret2 = ret.value()->repeat_skip(6);
+  ASSERT_TRUE(ret2.has_value());
+  EXPECT_EQ(6, ret2.value());
+  std::string tmp(12, ' ');
+  auto ret3 = ret.value()->repeat_read(tmp);
+  ASSERT_TRUE(ret3.has_value());
+  EXPECT_EQ(5, ret3.value());
+  tmp.resize(ret3.value());
+  EXPECT_EQ("world", tmp);
+}
+
+TEST_F(IoTest, read_block) {
+  touch("test", "hello world");
+
+  auto ret = io::openat(dirfd(), "test");
+  ASSERT_TRUE(ret.has_value());
+  auto ret2 = io_make_max_block(std::move(ret.value()), 2);
+  std::string tmp(12, ' ');
+  auto ret3 = ret2->repeat_read(tmp);
+  ASSERT_TRUE(ret3.has_value());
+  EXPECT_EQ(11, ret3.value());
+  tmp.resize(ret3.value());
+  EXPECT_EQ("hello world", tmp);
+}
+
+TEST_F(IoTest, skip_block) {
+  touch("test", "hello world");
+
+  auto ret = io::openat(dirfd(), "test");
+  ASSERT_TRUE(ret.has_value());
+  auto ret2 = io_make_max_block(std::move(ret.value()), 2);
+  auto ret3 = ret2->repeat_skip(6);
+  ASSERT_TRUE(ret3.has_value());
+  EXPECT_EQ(6, ret3.value());
+  std::string tmp(12, ' ');
+  auto ret4 = ret2->repeat_read(tmp);
+  ASSERT_TRUE(ret4.has_value());
+  EXPECT_EQ(5, ret4.value());
+  tmp.resize(ret4.value());
+  EXPECT_EQ("world", tmp);
+}
-- 
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