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apple/PhysarumApp/Tests/ParamHelpTests.swift

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import XCTest
@testable import Physarum

final class ParamHelpTests: XCTestCase {
    func testEveryDescriptorHasNonEmptyTooltip() {
        for d in ParamRegistry.all {
            XCTAssertFalse(d.tooltip.isEmpty, "\(d.idKey) (label '\(d.label)') has no tooltip — add it to ParamHelp.byLabel")
        }
    }

    func testKnownLabelsMapToText() {
        XCTAssertTrue(ParamHelp.text(for: "Move speed").contains("step each frame"))
        XCTAssertTrue(ParamHelp.text(for: "Agents").contains("particles"))
        XCTAssertTrue(ParamHelp.text(for: "Decay").contains("survives"))
    }

    func testMatrixLabelGetsSharedText() {
        XCTAssertTrue(ParamHelp.text(for: "M[1,2]").contains("attracts"))
        XCTAssertEqual(ParamHelp.text(for: "M[0,0]"), ParamHelp.text(for: "M[2,1]"))
    }

    func testUnknownLabelIsEmpty() {
        XCTAssertEqual(ParamHelp.text(for: "Nonexistent"), "")
    }

    func testNonScalarKeysHaveHelp() {
        for key in ["Spawn pattern", "Blend mode", "Background color", "Species color",
                    "Audio reactive", "Auto-gain", "Input gain"] {
            XCTAssertFalse(ParamHelp.text(for: key).isEmpty, "missing help for \(key)")
        }
    }
    func testBlendModeMentionsAdditiveAndPaint() {
        let t = ParamHelp.text(for: "Blend mode")
        XCTAssertTrue(t.contains("Additive")); XCTAssertTrue(t.contains("Paint"))
    }
}