Improved test

test/lexer_coverage_test.go

@@ -0,0 +1,45 @@
+package integration
+
+import (
+	"testing"
+
+	"github.com/marte-community/marte-dev-tools/internal/parser"
+)
+
+func TestLexerCoverage(t *testing.T) {
+	// 1. Comments
+	input := `
+// Line comment
+/* Block comment */
+//# Docstring
+//! Pragma
+/* Unclosed block
+`
+	l := parser.NewLexer(input)
+	for {
+		tok := l.NextToken()
+		if tok.Type == parser.TokenEOF {
+			break
+		}
+	}
+
+	// 2. Numbers
+	inputNum := `123 12.34 1.2e3 1.2E-3 0xFF`
+	lNum := parser.NewLexer(inputNum)
+	for {
+		tok := lNum.NextToken()
+		if tok.Type == parser.TokenEOF {
+			break
+		}
+	}
+
+	// 3. Identifiers
+	inputID := `Valid ID with-hyphen _under`
+	lID := parser.NewLexer(inputID)
+	for {
+		tok := lID.NextToken()
+		if tok.Type == parser.TokenEOF {
+			break
+		}
+	}
+}