1 files changed, 49 insertions, 0 deletions
diff --git a/test/cepis/csv_test.exs b/test/cepis/csv_test.exs
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+++ b/test/cepis/csv_test.exs
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+defmodule Cepis.CSVTest do
+  use ExUnit.Case, async: true
+
+  alias Cepis.CSV
+
+  test "parses plain rows" do
+    assert CSV.parse("a,b\n1,2\n") == [["a", "b"], ["1", "2"]]
+  end
+
+  test "tolerates a missing final newline" do
+    assert CSV.parse("a,b\n1,2") == [["a", "b"], ["1", "2"]]
+  end
+
+  test "tolerates CRLF" do
+    assert CSV.parse("a,b\r\n1,2\r\n") == [["a", "b"], ["1", "2"]]
+  end
+
+  test "keeps empty fields" do
+    assert CSV.parse("a,b,c\n1,,3\n") == [["a", "b", "c"], ["1", "", "3"]]
+  end
+
+  test "unquotes fields containing commas, quotes and newlines" do
+    text = ~s(a,b\n"x, y","he said ""hi"""\n)
+    assert CSV.parse(text) == [["a", "b"], ["x, y", ~s(he said "hi")]]
+
+    assert CSV.parse(~s(a\n"one\ntwo"\n)) == [["a"], ["one\ntwo"]]
+  end
+
+  test "strips a byte order mark" do
+    assert CSV.parse("a,b\n1,2\n") == [["a", "b"], ["1", "2"]]
+  end
+
+  test "keeps multi-byte characters intact" do
+    assert CSV.parse("a\nSão Paulo\n") == [["a"], ["São Paulo"]]
+  end
+
+  test "an empty document has no rows" do
+    assert CSV.parse("") == []
+    assert CSV.parse("\n") == []
+  end
+
+  test "pairs values with the header, padding short rows" do
+    assert CSV.parse_with_header("a,b,c\n1,2\n") == [%{"a" => "1", "b" => "2", "c" => ""}]
+  end
+
+  test "a header alone yields no rows" do
+    assert CSV.parse_with_header("a,b,c\n") == []
+  end
+end