//! Module-path coverage for client-side H.264 decoder selection.
//!
//! Scope: include the client decoder selection helper directly.
//! Targets: `client/src/video_support.rs`.
//! Why: operator decoder overrides should fall back cleanly on machines with
//! different GStreamer plugin sets.

#[path = "../../client/src/video_support.rs"]
mod video_support;

use serial_test::serial;
use temp_env::with_var;

#[test]
#[serial]
fn decoder_override_accepts_decodebin_without_factory_lookup() {
    with_var("LESAVKA_H264_DECODER", Some("decodebin"), || {
        assert_eq!(video_support::pick_h264_decoder(), "decodebin");
    });
}

#[test]
#[serial]
fn decoder_override_accepts_buildable_element() {
    with_var("LESAVKA_H264_DECODER", Some("fakesink"), || {
        assert_eq!(video_support::pick_h264_decoder(), "fakesink");
    });
}

#[test]
#[serial]
fn decoder_override_ignores_blank_or_unknown_values() {
    with_var("LESAVKA_H264_DECODER", Some("   "), || {
        assert!(!video_support::pick_h264_decoder().trim().is_empty());
    });
    with_var("LESAVKA_H264_DECODER", Some("not-a-real-decoder"), || {
        assert!(!video_support::pick_h264_decoder().trim().is_empty());
    });
}

#[test]
#[serial]
#[cfg(coverage)]
fn decoder_selection_falls_back_when_no_factory_can_build() {
    with_var("TEST_DISABLE_H264_DECODER_FACTORY", Some("1"), || {
        with_var("LESAVKA_H264_DECODER", Some("fakesink"), || {
            assert_eq!(video_support::pick_h264_decoder(), "decodebin");
        });
    });
    with_var("TEST_FAIL_GST_INIT", Some("1"), || {
        with_var("LESAVKA_H264_DECODER", None::<&str>, || {
            assert_eq!(video_support::pick_h264_decoder(), "decodebin");
        });
    });
}