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package showcase
import "testing"
func TestIsCommentLine(t *testing.T) {
t.Parallel()
tests := []struct {
name string
trimmed string
want bool
}{
{name: "slash comment", trimmed: "// comment", want: true},
{name: "hash comment", trimmed: "# comment", want: true},
{name: "include directive", trimmed: "#include <stdio.h>", want: false},
{name: "define directive", trimmed: "#define FOO 1", want: false},
{name: "html comment", trimmed: "<!-- comment -->", want: true},
{name: "block comment inner line", trimmed: "* comment", want: true},
{name: "single asterisk", trimmed: "*", want: false},
{name: "code line", trimmed: "fmt.Println(\"ok\")", want: false},
}
for _, tc := range tests {
tc := tc
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
got := isCommentLine(tc.trimmed)
if got != tc.want {
t.Fatalf("isCommentLine(%q) = %v, want %v", tc.trimmed, got, tc.want)
}
})
}
}
func TestStripComments_PreservesPreprocessorDirectives(t *testing.T) {
t.Parallel()
code := `#include <stdio.h>
#define VALUE 1
# this is a comment
int main() {
return VALUE; // trailing comment
}`
got := stripComments(code)
want := `#include <stdio.h>
#define VALUE 1
int main() {
return VALUE;
}`
if got != want {
t.Fatalf("stripComments() = %q, want %q", got, want)
}
}
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