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scanner_test.go
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scanner_test.go
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package ego_test
import (
"bytes"
"io"
"reflect"
"testing"
"github.com/benbjohnson/ego"
)
// Ensure that a text block can be scanned.
func TestScanner(t *testing.T) {
t.Run("TextBlock", func(t *testing.T) {
t.Run("OK", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("hello world"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.TextBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Content != "hello world" {
t.Fatalf("unexpected content: %s", blk.Content)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("SingleLT", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("<"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.TextBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Content != "<" {
t.Fatalf("unexpected content: %s", blk.Content)
}
})
t.Run("SingleLT", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("<html>"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.TextBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Content != "<html>" {
t.Fatalf("unexpected content: %s", blk.Content)
}
})
})
t.Run("CodeBlock", func(t *testing.T) {
t.Run("OK", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<% x := 1 %>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.CodeBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Content != " x := 1 " {
t.Fatalf("unexpected content: %s", blk.Content)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("UnexpectedEOF/1", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<%`), "tmpl.ego")
if _, err := s.Scan(); err == nil || err.Error() != `Expected close tag, found EOF at tmpl.ego:1` {
t.Fatalf("unexpected error: %s", err)
}
})
t.Run("UnexpectedEOF/2", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<% x = 2`), "tmpl.ego")
if _, err := s.Scan(); err == nil || err.Error() != `Expected close tag, found EOF at tmpl.ego:1` {
t.Fatalf("unexpected error: %s", err)
}
})
t.Run("UnexpectedEOF/3", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<% x = 2 %`), "tmpl.ego")
if _, err := s.Scan(); err == nil || err.Error() != `Expected close tag, found EOF at tmpl.ego:1` {
t.Fatalf("unexpected error: %s", err)
}
})
t.Run("UnexpectedEOF/4", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<% x = 2 % `), "tmpl.ego")
if _, err := s.Scan(); err == nil || err.Error() != `Expected close tag, found EOF at tmpl.ego:1` {
t.Fatalf("unexpected error: %s", err)
}
})
})
t.Run("PrintBlock", func(t *testing.T) {
t.Run("UnexpectedEOF", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<%=`), "tmpl.ego")
if _, err := s.Scan(); err == nil || err.Error() != `Expected close tag, found EOF at tmpl.ego:1` {
t.Fatalf("unexpected error: %s", err)
}
})
})
t.Run("ComponentStartBlock", func(t *testing.T) {
t.Run("TypeOnly", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:MyComponent123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "MyComponent123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("PkgAndType", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<util:myComponent123 >`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "util" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "myComponent123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("WithField", func(t *testing.T) {
t.Run("Int", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "123",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("Float", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=100.23 >`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "100.23",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("Bool", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=true>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "true",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("String", func(t *testing.T) {
t.Run("DoubleQuote", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo="hello \t foo!">`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: `"hello \t foo!"`,
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("Backtick", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("<ego:Component Foo123=`hello \\t foo!`>"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo123",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "`hello \\t foo!`",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
})
t.Run("Struct", func(t *testing.T) {
t.Run("Simple", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=&util.T{X: x, Y: 12}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "&util.T{X: x, Y: 12}",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("Nested", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=&util.T{X: x, Y: []V{{Z:"foo"},{Z:"bar"}}}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: `&util.T{X: x, Y: []V{{Z:"foo"},{Z:"bar"}}}`,
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
t.Run("AnnoyingSpace", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component Foo=util.T {}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Fields) != 1 {
t.Fatalf("unexpected field count: %d", len(blk.Fields))
} else if !reflect.DeepEqual(blk.Fields[0], &ego.Field{
Name: "Foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "util.T {}",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected field: %#v", blk.Fields[0])
}
})
})
})
t.Run("WithAttr", func(t *testing.T) {
t.Run("Int", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "123",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("Float", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=100.23 >`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "100.23",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("Bool", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=true>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "true",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("Standalone", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
}) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("DashedName", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo-bar>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo-bar",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
}) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("String", func(t *testing.T) {
t.Run("DoubleQuote", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo="hello \t foo!">`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: `"hello \t foo!"`,
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("Backtick", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("<ego:Component _foo123=`hello \\t foo!`>"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "_foo123",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "`hello \\t foo!`",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
})
t.Run("Struct", func(t *testing.T) {
t.Run("Simple", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=&util.T{X: x, Y: 12}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "&util.T{X: x, Y: 12}",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("Nested", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=&util.T{X: x, Y: []V{{Z:"foo"},{Z:"bar"}}}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: `&util.T{X: x, Y: []V{{Z:"foo"},{Z:"bar"}}}`,
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
t.Run("AnnoyingSpace", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego:Component foo=util.T {}>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if len(blk.Attrs) != 1 {
t.Fatalf("unexpected attr count: %d", len(blk.Attrs))
} else if !reflect.DeepEqual(blk.Attrs[0], &ego.Attr{
Name: "foo",
NamePos: ego.Pos{Path: "tmpl.ego", LineNo: 1},
Value: "util.T {}",
ValuePos: ego.Pos{Path: "tmpl.ego", LineNo: 1}},
) {
t.Fatalf("unexpected attr: %#v", blk.Attrs[0])
}
})
})
})
})
t.Run("ComponentEndBlock", func(t *testing.T) {
t.Run("TypeOnly", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`</ego:MyComponent123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentEndBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "MyComponent123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("PkgAndType", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`</util:myComponent123 >`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.ComponentEndBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "util" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "myComponent123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
})
t.Run("AttrStartBlock", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`<ego::MyField123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.AttrStartBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "MyField123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("AttrEndBlock", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString(`</ego::_myField123>`), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if blk, ok := blk.(*ego.AttrEndBlock); !ok {
t.Fatalf("unexpected block type: %T", blk)
} else if blk.Package != "" {
t.Fatalf("unexpected package: %s", blk.Package)
} else if blk.Name != "_myField123" {
t.Fatalf("unexpected name: %s", blk.Name)
} else if !reflect.DeepEqual(blk.Pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos: %#v", blk.Pos)
}
})
t.Run("Multiline", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBufferString("hello\nworld<%== x \n\n %>goodbye"), "tmpl.ego")
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if pos := ego.Position(blk); !reflect.DeepEqual(pos, ego.Pos{Path: "tmpl.ego", LineNo: 1}) {
t.Fatalf("unexpected pos(0): %#v", pos)
}
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if pos := ego.Position(blk); !reflect.DeepEqual(pos, ego.Pos{Path: "tmpl.ego", LineNo: 2}) {
t.Fatalf("unexpected pos(1): %#v", pos)
}
if blk, err := s.Scan(); err != nil {
t.Fatal(err)
} else if pos := ego.Position(blk); !reflect.DeepEqual(pos, ego.Pos{Path: "tmpl.ego", LineNo: 4}) {
t.Fatalf("unexpected pos(2): %#v", pos)
}
})
t.Run("EOF", func(t *testing.T) {
s := ego.NewScanner(bytes.NewBuffer(nil), "tmpl.ego")
if blk, err := s.Scan(); err != io.EOF {
t.Fatalf("unexpected error: %#v", err)
} else if blk != nil {
t.Fatalf("expected nil block, got: %#v", blk)
}
})
}