Big refactoring, reflection still borked

csvstruct_test.go

@@ -0,0 +1,53 @@
+package csvstruct
+
+import (
+	"io"
+	"strings"
+	"testing"
+)
+
+func TestDecode(t *testing.T) {
+	type row struct {
+		Foo, Bar, Baz string
+	}
+
+	for _, c := range []struct {
+		data string
+		out  []row
+	}{{
+		data: `Foo,Bar,Baz
+a,b,c
+d,e,f`,
+		out: []row{{"a", "b", "c"}, {"d", "e", "f"}},
+	}, {
+		// Rows that only have partial data are only partially filled.
+		data: `Foo,Bar
+a,
+,b`,
+		out: []row{{"a", "", ""}, {"", "b", ""}},
+	}, {
+		// Disjoint data results in unset struct.
+		data: `
+Qux
+ignored`,
+		out: []row{{"", "", ""}},
+	}} {
+		d := NewDecoder(strings.NewReader(c.data))
+		var row row
+		i := 0
+		for {
+			err := d.DecodeNext(&row)
+			if err == io.EOF {
+				break
+			}
+			if err != nil {
+				t.Errorf("%v", err)
+				break
+			}
+			if c.out[i] != row {
+				t.Errorf("unexpected item %d, got %+v, want %+v", i, row, c.out[i])
+			}
+			i++
+		}
+	}
+}