blob: 122281953448bd147d7b70afe8b3c22eb649d4fa [file] [log] [blame]
package main
import (
"reflect"
"testing"
)
func TestRuleParser(t *testing.T) {
for _, tc := range []struct {
in string
want Rule
assign *AssignAST
err string
}{
{
in: "foo: bar",
want: Rule{
outputs: []string{"foo"},
inputs: []string{"bar"},
},
},
{
in: "foo: bar baz",
want: Rule{
outputs: []string{"foo"},
inputs: []string{"bar", "baz"},
},
},
{
in: "foo:: bar",
want: Rule{
outputs: []string{"foo"},
inputs: []string{"bar"},
isDoubleColon: true,
},
},
{
in: "foo",
err: "*** missing separator.",
},
{
in: "%.o: %.c",
want: Rule{
outputPatterns: []pattern{pattern{suffix: ".o"}},
inputs: []string{"%.c"},
},
},
{
in: "foo %.o: %.c",
err: "*** mixed implicit and normal rules: deprecated syntax",
},
{
in: "foo.o: %.o: %.c %.h",
want: Rule{
outputs: []string{"foo.o"},
outputPatterns: []pattern{pattern{suffix: ".o"}},
inputs: []string{"%.c", "%.h"},
},
},
{
in: "%.x: %.y: %.z",
err: "*** mixed implicit and normal rules: deprecated syntax",
},
{
in: "foo.o: : %.c",
err: "*** missing target pattern.",
},
{
in: "foo.o: %.o %.o: %.c",
err: "*** multiple target patterns.",
},
{
in: "foo.o: foo.o: %.c",
err: "*** target pattern contains no '%'.",
},
{
in: "foo: bar | baz",
want: Rule{
outputs: []string{"foo"},
inputs: []string{"bar"},
orderOnlyInputs: []string{"baz"},
},
},
{
in: "foo: CFLAGS = -g",
want: Rule{
outputs: []string{"foo"},
},
assign: &AssignAST{
lhs: "CFLAGS",
rhs: "-g",
op: "=",
},
},
{
in: "foo: CFLAGS=-g",
want: Rule{
outputs: []string{"foo"},
},
assign: &AssignAST{
lhs: "CFLAGS",
rhs: "-g",
op: "=",
},
},
{
in: "foo: CFLAGS := -g",
want: Rule{
outputs: []string{"foo"},
},
assign: &AssignAST{
lhs: "CFLAGS",
rhs: "-g",
op: ":=",
},
},
{
in: "%.o: CFLAGS := -g",
want: Rule{
outputPatterns: []pattern{pattern{suffix: ".o"}},
},
assign: &AssignAST{
lhs: "CFLAGS",
rhs: "-g",
op: ":=",
},
},
/* TODO
{
in: "foo.o: %.c: %.c",
err: "*** target 'foo.o' doesn't match the target pattern",
},
*/
} {
got := &Rule{}
assign, err := got.parse([]byte(tc.in))
if tc.err != "" {
if err == nil {
t.Errorf(`r.parse(%q)=_, <nil>, want _, %q`, tc.in, tc.err)
continue
}
if got, want := err.Error(), tc.err; got != want {
t.Errorf(`r.parse(%q)=_, %s, want %s`, tc.in, got, want)
}
continue
}
if err != nil {
t.Errorf(`r.parse(%q)=_, %v; want nil error`, tc.in, err)
continue
}
if !reflect.DeepEqual(*got, tc.want) {
t.Errorf(`r.parse(%q); r=%q, want %q`, tc.in, *got, tc.want)
}
if tc.assign != nil {
if assign == nil {
t.Errorf(`r.parse(%q)=<nil>; want=%#v`, tc.in, tc.assign)
continue
}
if got, want := assign, tc.assign; !reflect.DeepEqual(got, want) {
t.Errorf(`r.parse(%q)=%#v; want=%#v`, tc.in, got, want)
}
continue
}
if assign != nil {
t.Errorf(`r.parse(%q)=%v; want=<nil>`, tc.in, assign)
}
}
}