This is a breaking change, remove partial internal error log print, t…

…hrow XML deserialize error

- Add error return value for the `GetComments`, `GetDefaultFont` and `SetDefaultFont` functions
- Update unit tests

adjust_test.go

@@ -10,7 +10,7 @@ import (
 
 func TestAdjustMergeCells(t *testing.T) {
 	f := NewFile()
-	// testing adjustAutoFilter with illegal cell reference.
+	// Test adjustAutoFilter with illegal cell reference.
 	assert.EqualError(t, f.adjustMergeCells(&xlsxWorksheet{
 		MergeCells: &xlsxMergeCells{
 			Cells: []*xlsxMergeCell{
@@ -57,7 +57,7 @@ func TestAdjustMergeCells(t *testing.T) {
 		},
 	}, columns, 1, -1))
 
-	// testing adjustMergeCells
+	// Test adjustMergeCells.
 	var cases []struct {
 		label      string
 		ws         *xlsxWorksheet
@@ -68,7 +68,7 @@ func TestAdjustMergeCells(t *testing.T) {
 		expectRect []int
 	}
 
-	// testing insert
+	// Test insert.
 	cases = []struct {
 		label      string
 		ws         *xlsxWorksheet
@@ -139,7 +139,7 @@ func TestAdjustMergeCells(t *testing.T) {
 		assert.Equal(t, c.expectRect, c.ws.MergeCells.Cells[0].rect, c.label)
 	}
 
-	// testing delete
+	// Test delete,
 	cases = []struct {
 		label      string
 		ws         *xlsxWorksheet
@@ -227,7 +227,7 @@ func TestAdjustMergeCells(t *testing.T) {
 		assert.Equal(t, c.expect, c.ws.MergeCells.Cells[0].Ref, c.label)
 	}
 
-	// testing delete one row/column
+	// Test delete one row or column
 	cases = []struct {
 		label      string
 		ws         *xlsxWorksheet
@@ -324,13 +324,13 @@ func TestAdjustTable(t *testing.T) {
 
 	f = NewFile()
 	assert.NoError(t, f.AddTable(sheetName, "A1", "D5", ""))
-	// Test adjust table with non-table part
+	// Test adjust table with non-table part.
 	f.Pkg.Delete("xl/tables/table1.xml")
 	assert.NoError(t, f.RemoveRow(sheetName, 1))
-	// Test adjust table with unsupported charset
+	// Test adjust table with unsupported charset.
 	f.Pkg.Store("xl/tables/table1.xml", MacintoshCyrillicCharset)
 	assert.NoError(t, f.RemoveRow(sheetName, 1))
-	// Test adjust table with invalid table range reference
+	// Test adjust table with invalid table range reference.
 	f.Pkg.Store("xl/tables/table1.xml", []byte(`<table ref="-" />`))
 	assert.NoError(t, f.RemoveRow(sheetName, 1))
 }

calcchain.go

@@ -15,23 +15,19 @@ import (
 	"bytes"
 	"encoding/xml"
 	"io"
-	"log"
 )
 
 // calcChainReader provides a function to get the pointer to the structure
 // after deserialization of xl/calcChain.xml.
-func (f *File) calcChainReader() *xlsxCalcChain {
-	var err error
-
+func (f *File) calcChainReader() (*xlsxCalcChain, error) {
 	if f.CalcChain == nil {
 		f.CalcChain = new(xlsxCalcChain)
-		if err = f.xmlNewDecoder(bytes.NewReader(namespaceStrictToTransitional(f.readXML(defaultXMLPathCalcChain)))).
+		if err := f.xmlNewDecoder(bytes.NewReader(namespaceStrictToTransitional(f.readXML(defaultXMLPathCalcChain)))).
 			Decode(f.CalcChain); err != nil && err != io.EOF {
-			log.Printf("xml decode error: %s", err)
+			return f.CalcChain, err
 		}
 	}
-
-	return f.CalcChain
+	return f.CalcChain, nil
 }
 
 // calcChainWriter provides a function to save xl/calcChain.xml after
@@ -45,8 +41,11 @@ func (f *File) calcChainWriter() {
 
 // deleteCalcChain provides a function to remove cell reference on the
 // calculation chain.
-func (f *File) deleteCalcChain(index int, cell string) {
-	calc := f.calcChainReader()
+func (f *File) deleteCalcChain(index int, cell string) error {
+	calc, err := f.calcChainReader()
+	if err != nil {
+		return err
+	}
 	if calc != nil {
 		calc.C = xlsxCalcChainCollection(calc.C).Filter(func(c xlsxCalcChainC) bool {
 			return !((c.I == index && c.R == cell) || (c.I == index && cell == "") || (c.I == 0 && c.R == cell))
@@ -64,6 +63,7 @@ func (f *File) deleteCalcChain(index int, cell string) {
 			}
 		}
 	}
+	return err
 }
 
 type xlsxCalcChainCollection []xlsxCalcChainC

calcchain_test.go

@@ -1,12 +1,18 @@
 package excelize
 
-import "testing"
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
 
 func TestCalcChainReader(t *testing.T) {
 	f := NewFile()
+	// Test read calculation chain with unsupported charset.
 	f.CalcChain = nil
 	f.Pkg.Store(defaultXMLPathCalcChain, MacintoshCyrillicCharset)
-	f.calcChainReader()
+	_, err := f.calcChainReader()
+	assert.EqualError(t, err, "XML syntax error on line 1: invalid UTF-8")
 }
 
 func TestDeleteCalcChain(t *testing.T) {
@@ -15,5 +21,19 @@ func TestDeleteCalcChain(t *testing.T) {
 	f.ContentTypes.Overrides = append(f.ContentTypes.Overrides, xlsxOverride{
 		PartName: "/xl/calcChain.xml",
 	})
-	f.deleteCalcChain(1, "A1")
+	assert.NoError(t, f.deleteCalcChain(1, "A1"))
+
+	f.CalcChain = nil
+	f.Pkg.Store(defaultXMLPathCalcChain, MacintoshCyrillicCharset)
+	assert.EqualError(t, f.deleteCalcChain(1, "A1"), "XML syntax error on line 1: invalid UTF-8")
+
+	f.CalcChain = nil
+	f.Pkg.Store(defaultXMLPathCalcChain, MacintoshCyrillicCharset)
+	assert.EqualError(t, f.SetCellFormula("Sheet1", "A1", ""), "XML syntax error on line 1: invalid UTF-8")
+
+	formulaType, ref := STCellFormulaTypeShared, "C1:C5"
+	assert.NoError(t, f.SetCellFormula("Sheet1", "C1", "=A1+B1", FormulaOpts{Ref: &ref, Type: &formulaType}))
+	f.CalcChain = nil
+	f.Pkg.Store(defaultXMLPathCalcChain, MacintoshCyrillicCharset)
+	assert.EqualError(t, f.SetCellValue("Sheet1", "C1", true), "XML syntax error on line 1: invalid UTF-8")
 }