continued refactoring, added more tests, better error handling

lib/parser_test.go

@@ -0,0 +1,77 @@
+/*
+Copyright © 2022 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+)
+
+func TestParser(t *testing.T) {
+	data := Tabdata{
+		maxwidthHeader: 5,
+		maxwidthPerCol: []int{
+			5,
+			5,
+			8,
+		},
+		columns: 3,
+		headerIndices: []map[string]int{
+			map[string]int{
+				"beg": 0,
+				"end": 6,
+			},
+			map[string]int{
+				"end": 13,
+				"beg": 7,
+			},
+			map[string]int{
+				"beg": 14,
+				"end": 0,
+			},
+		},
+		headers: []string{
+			"ONE",
+			"TWO",
+			"THREE",
+		},
+		entries: [][]string{
+			[]string{
+				"asd",
+				"igig",
+				"cxxxncnc",
+			},
+			[]string{
+				"19191",
+				"EDD 1",
+				"X",
+			},
+		},
+	}
+
+	table := `ONE    TWO    THREE  
+asd    igig   cxxxncnc  
+19191  EDD 1  X`
+
+	readFd := strings.NewReader(table)
+	gotdata := parseFile(readFd, "")
+	if !reflect.DeepEqual(data, gotdata) {
+		t.Errorf("Parser returned invalid data\nExp: %+v\nGot: %+v\n", data, gotdata)
+	}
+}