tests: unit: add 'csv' tests

Simple tests for a simple library.

tests/unit/CMakeLists.txt

@@ -3,13 +3,14 @@ find_package(GTest)
 if (${GTest_FOUND})
 include(GoogleTest)
 
-add_executable(base_test base.cc)
-target_link_libraries(base_test PRIVATE common_options)
+add_executable(csv_test csv.cc)
+target_link_libraries(csv_test PRIVATE common_options)
 
-target_link_libraries(base_test PRIVATE
+target_link_libraries(csv_test PRIVATE
+  csv
   GTest::gtest
   GTest::gtest_main
 )
 
-gtest_discover_tests(base_test)
+gtest_discover_tests(csv_test)
 endif (${GTest_FOUND})

tests/unit/base.cc

@@ -1,5 +0,0 @@
-#include <gtest/gtest.h>
-
-TEST(misc, passing) {
-    ASSERT_EQ(1, 1);
-}

tests/unit/csv.cc

@@ -0,0 +1,38 @@
+#include <gtest/gtest.h>
+
+#include "csv/read-csv.hh"
+
+// Allow namespace pollution in tests for convenience
+using namespace kraken::csv;
+
+TEST(csv, empty) {
+    auto const expected = csv_type{};
+    ASSERT_EQ(read_csv(""), expected);
+}
+
+TEST(csv, skip_header) {
+    auto const expected = csv_type{};
+    ASSERT_EQ(read_csv("a,b,c"), expected);
+}
+
+TEST(csv, do_not_skip_header) {
+    auto const expected = csv_type{
+        {"a", "b", "c"},
+    };
+    ASSERT_EQ(read_csv("a,b,c", CsvHeader::KEEP), expected);
+}
+
+TEST(csv, single_line) {
+    auto const expected = csv_type{
+        {"1", "2", "3"},
+    };
+    ASSERT_EQ(read_csv("a,b,c\n1,2,3"), expected);
+}
+
+TEST(csv, single_line_with_header) {
+    auto const expected = csv_type{
+        {"a", "b", "c"},
+        {"1", "2", "3"},
+    };
+    ASSERT_EQ(read_csv("a,b,c\n1,2,3", CsvHeader::KEEP), expected);
+}