test: finish testbench for tabulate

testbench/yycc/carton/tabulate.cpp

@@ -1,13 +1,61 @@
 #include <gtest/gtest.h>
 #include <yycc.hpp>
 #include <yycc/carton/tabulate.hpp>
+#include <yycc/string/reinterpret.hpp>
+#include <sstream>
 
 #define TABULATE ::yycc::carton::tabulate
+#define REINTERPRET ::yycc::string::reinterpret
 
 namespace yycctest::carton::tabulate {
 
-    TEST(CartonTabulate, Main) {
-        
+    class CartonTabulate : public ::testing::Test {
+    protected:
+        CartonTabulate() : table(3u), ss() {
+            // setup basic data
+            table.set_prefix(u8"# ");
+            table.set_header({u8"中文1", u8"中文2", u8"中文3"});
+            table.set_bar(u8"===");
+            table.add_row({u8"a", u8"b", u8"c"});
+        }
+        ~CartonTabulate() override = default;
+
+        void expected_print(const std::u8string_view& exp) {
+            ss.str("");
+            table.print(ss);
+            EXPECT_EQ(REINTERPRET::as_utf8_view(ss.view()), exp);
+        }
+
+        TABULATE::Tabulate table;
+        std::stringstream ss;
+    };
+
+    TEST_F(CartonTabulate, Full) {
+        table.show_header(true);
+        table.show_bar(true);
+        expected_print(u8"# 中文1 中文2 中文3 \n"
+                       u8"# ===   ===   ===   \n"
+                       u8"# a     b     c     \n");
     }
 
-}
+    TEST_F(CartonTabulate, NoHeader) {
+        table.show_header(false);
+        table.show_bar(true);
+        expected_print(u8"# === === === \n"
+                       u8"# a   b   c   \n");
+    }
+
+    TEST_F(CartonTabulate, NoBar) {
+        table.show_header(true);
+        table.show_bar(false);
+        expected_print(u8"# 中文1 中文2 中文3 \n"
+                       u8"# a     b     c     \n");
+    }
+
+    TEST_F(CartonTabulate, OnlyData) {
+        table.show_header(false);
+        table.show_bar(false);
+        expected_print(u8"# a b c \n");
+    }
+
+} // namespace yycctest::carton::tabulate