monochange_graph 0.5.1

use std::path::PathBuf;

use monochange_core::BumpSeverity;
use monochange_core::ChangeSignal;
use monochange_core::DependencyEdge;
use monochange_core::DependencyKind;
use monochange_core::DependencySourceKind;
use monochange_core::Ecosystem;
use monochange_core::PackageRecord;
use monochange_core::PublishState;
use monochange_core::VersionGroup;
use semver::Version;

use crate::NormalizedGraph;
use crate::build_release_plan;

fn package(id: &str, version: Version) -> PackageRecord {
	let manifest_path = PathBuf::from(id.replace(':', "/")).join("manifest");
	let mut package = PackageRecord::new(
		Ecosystem::Cargo,
		id.to_string(),
		manifest_path,
		PathBuf::from("fixtures/mixed"),
		Some(version),
		PublishState::Public,
	);
	package.id = id.to_string();
	package
}

fn edge(from: &str, to: &str) -> DependencyEdge {
	DependencyEdge {
		from_package_id: from.to_string(),
		to_package_id: to.to_string(),
		dependency_kind: DependencyKind::Runtime,
		source_kind: DependencySourceKind::Manifest,
		version_constraint: None,
		is_optional: false,
		is_direct: true,
		source_field: None,
	}
}

// -- Kill mutant: contains() always returns true/false --

#[test]
fn normalized_graph_contains_distinguishes_present_and_absent() {
	let packages = [
		package("a", Version::new(1, 0, 0)),
		package("b", Version::new(1, 0, 0)),
	];
	let edges = [edge("b", "a")];
	let graph = NormalizedGraph::new(&packages, &edges);

	assert!(graph.contains("a"), "package 'a' should be in graph");
	assert!(graph.contains("b"), "package 'b' should be in graph");
	assert!(!graph.contains("c"), "package 'c' should not be in graph");
}

// -- Kill mutant: > replaced with >= in distinct_versions.len() check --

#[test]
fn build_release_plan_has_no_warning_for_single_explicit_version() {
	let packages = vec![package("cargo:core", Version::new(1, 0, 0))];
	let plan = build_release_plan(
		PathBuf::from("fixtures/cargo").as_path(),
		&packages,
		&[],
		&[],
		&[ChangeSignal {
			package_id: "cargo:core".to_string(),
			requested_bump: Some(BumpSeverity::Patch),
			explicit_version: Some(Version::new(1, 2, 0)),
			change_origin: "direct-change".to_string(),
			evidence_refs: Vec::new(),
			notes: None,
			details: None,
			change_type: None,
			caused_by: Vec::new(),
			source_path: PathBuf::from(".changeset/pin.md"),
		}],
		&[],
		BumpSeverity::Patch,
		false,
	)
	.unwrap_or_else(|error| panic!("release plan: {error}"));

	assert!(
		plan.warnings.is_empty(),
		"single explicit version should not produce a warning, got: {:?}",
		plan.warnings
	);
}

// -- Kill mutant: && replaced with || in planned_version.is_none() check --

#[test]
fn build_release_plan_leaves_unreleased_package_without_planned_version() {
	let packages = vec![
		package("cargo:core", Version::new(1, 0, 0)),
		package("cargo:app", Version::new(1, 0, 0)),
	];
	let plan = build_release_plan(
		PathBuf::from("fixtures/cargo").as_path(),
		&packages,
		&[edge("cargo:app", "cargo:core")],
		&[],
		&[ChangeSignal {
			package_id: "cargo:core".to_string(),
			requested_bump: Some(BumpSeverity::Patch),
			explicit_version: None,
			change_origin: "direct-change".to_string(),
			evidence_refs: Vec::new(),
			notes: None,
			details: None,
			change_type: None,
			caused_by: Vec::new(),
			source_path: PathBuf::from(".changeset/core.md"),
		}],
		&[],
		BumpSeverity::None,
		false,
	)
	.unwrap_or_else(|error| panic!("release plan: {error}"));

	// With default_parent_bump = None, app gets None severity.
	let app = plan
		.decisions
		.iter()
		.find(|d| d.package_id == "cargo:app")
		.unwrap_or_else(|| panic!("expected app decision"));
	assert_eq!(app.recommended_bump, BumpSeverity::None);
	assert!(
		app.planned_version.is_none(),
		"unreleased dependent should have no planned_version, got: {:?}",
		app.planned_version
	);
}

#[test]
fn build_release_plan_uses_group_version_not_standalone_for_group_members() {
	let mut core = package("cargo:core", Version::new(1, 0, 0));
	core.version_group_id = Some("sdk".to_string());
	let mut web = package("npm:web", Version::new(1, 0, 0));
	web.version_group_id = Some("sdk".to_string());
	let version_group = VersionGroup {
		group_id: "sdk".to_string(),
		display_name: "sdk".to_string(),
		members: vec![core.id.clone(), web.id.clone()],
		mismatch_detected: false,
	};

	let plan = build_release_plan(
		PathBuf::from("fixtures/mixed").as_path(),
		&[core.clone(), web.clone()],
		&[],
		&[version_group],
		&[ChangeSignal {
			package_id: core.id.clone(),
			requested_bump: Some(BumpSeverity::Minor),
			explicit_version: None,
			change_origin: "direct-change".to_string(),
			evidence_refs: Vec::new(),
			notes: Some("feature".to_string()),
			details: None,
			change_type: None,
			caused_by: Vec::new(),
			source_path: PathBuf::from(".changeset/feature.md"),
		}],
		&[],
		BumpSeverity::Patch,
		false,
	)
	.unwrap_or_else(|error| panic!("release plan: {error}"));

	// Both members should have the group's planned version, not a standalone one.
	let core_decision = plan
		.decisions
		.iter()
		.find(|d| d.package_id == core.id)
		.unwrap_or_else(|| panic!("expected core decision"));
	let web_decision = plan
		.decisions
		.iter()
		.find(|d| d.package_id == web.id)
		.unwrap_or_else(|| panic!("expected web decision"));

	assert_eq!(
		core_decision.planned_version,
		Some(Version::new(1, 1, 0)),
		"core should have group planned version"
	);
	assert_eq!(
		web_decision.planned_version,
		Some(Version::new(1, 1, 0)),
		"web should have group planned version"
	);
}