| 8 | ) |
| 9 | |
| 10 | func TestMetaFilter(t *testing.T) { |
| 11 | // Create a Meta with some test data |
| 12 | meta := monitoring.Meta{ |
| 13 | "key1": "value1", |
| 14 | "key2": "value2", |
| 15 | "key3": "value3", |
| 16 | "key4": 42, |
| 17 | } |
| 18 | |
| 19 | // Test filtering with existing keys |
| 20 | filtered := meta.Filter("key1", "key3") |
| 21 | |
| 22 | // Check that filtered meta has the correct keys |
| 23 | require.Len(t, filtered, 2) |
| 24 | require.Equal(t, "value1", filtered["key1"]) |
| 25 | require.Equal(t, "value3", filtered["key3"]) |
| 26 | |
| 27 | // Check that non-requested keys are not present |
| 28 | require.NotContains(t, filtered, "key2") |
| 29 | require.NotContains(t, filtered, "key4") |
| 30 | |
| 31 | // Test filtering with non-existing keys |
| 32 | filtered2 := meta.Filter("nonexistent") |
| 33 | require.Empty(t, filtered2) |
| 34 | |
| 35 | // Test filtering with empty parameters |
| 36 | filtered3 := meta.Filter() |
| 37 | require.Empty(t, filtered3) |
| 38 | } |