Add a few tests for the parser

1 files changed, 62 insertions, 0 deletions

diff --git a/parser/parser_test.go b/parser/parser_test.go
new file mode 100644
index 0000000..b0b9568
--- /dev/null
+++ b/parser/parser_test.go
@@ -0,0 +1,62 @@
+package parser
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestParseFile(t *testing.T) {
+	s := `
+	html lang="en" {
+	  >head attr {
+	    >title {-
+	      My Website
+	    }
+	    meta x="y"{}
+	  }
+	  >body {
+	    >div #some-id{}
+	    div key="val" .class-1 .class-2 {
+	      p {- This is some @em{-emphatic} text	  }
+	    }
+
+	    tags key  = "Some long value" {}
+	  }
+	}`
+
+	// Write the source to a temp file
+	r := strings.NewReader(s)
+	f, _ := os.CreateTemp("", "tmp*")
+	defer f.Close()
+	io.Copy(f, r)
+	f.Seek(0, 0)
+	ast, _ := ParseFile(f)
+
+	// This is just… easier
+	s = fmt.Sprintf("%+v", ast)
+	result := `{Type:1 Text: Attrs:[] Children:[{Type:0 Text:html Attrs:[{Key:lang Value:en}] Children:[{Type:0 Text:head Attrs:[{Key:attr Value:}] Children:[{Type:0 Text:title Attrs:[] Children:[{Type:1 Text: Attrs:[] Children:[{Type:3 Text:
+	      My Website
+	     Attrs:[] Children:[] Newline:false}] Newline:false}] Newline:true} {Type:0 Text:meta Attrs:[{Key:x Value:y}] Children:[] Newline:false}] Newline:true} {Type:0 Text:body Attrs:[] Children:[{Type:0 Text:div Attrs:[{Key:id Value:some-id}] Children:[] Newline:true} {Type:0 Text:div Attrs:[{Key:key Value:val} {Key:class Value:class-1} {Key:class Value:class-2}] Children:[{Type:0 Text:p Attrs:[] Children:[{Type:1 Text: Attrs:[] Children:[{Type:3 Text: This is some  Attrs:[] Children:[] Newline:false} {Type:0 Text:em Attrs:[] Children:[{Type:1 Text: Attrs:[] Children:[{Type:3 Text:emphatic Attrs:[] Children:[] Newline:false}] Newline:false}] Newline:false} {Type:3 Text: text	   Attrs:[] Children:[] Newline:false}] Newline:false}] Newline:false}] Newline:false} {Type:0 Text:tags Attrs:[{Key:key Value:Some long value}] Children:[] Newline:false}] Newline:true}] Newline:false}] Newline:false}`
+	if s != result {
+		t.Fatalf("ParseFile() parsed unexpected AST ‘%s’", s)
+	}
+}
+
+func TestValidNameStartChar(t *testing.T) {
+	for _, r := range "HELLO_th:re_wörld" {
+		if !validNameStartChar(r) {
+			t.Fatalf("validNameStartChar() returned false on valid rune ‘%c’", r)
+		}
+	}
+}
+
+func TestValidNameChar(t *testing.T) {
+	for _, r := range "hello69-th.re-wörld" {
+		if !validNameChar(r) {
+			t.Fatalf("validNameChar() returned false on valid rune ‘%c’", r)
+		}
+	}
+}