TestManagerApp.ts

class TestManagerApp {
    public testCases: TestCase[] = [];
    public nextTestCaseId: number = 2;

    constructor() {
        this.buildInitialData();
    }

    public addTestCase() {
        const textBox = <HTMLInputElement>document.getElementById('txtTestName');
        const testCaseName = textBox.value;

        if (testCaseName) {
            const testCase = new TestCase(testCaseName, this.nextTestCaseId++);
            this.testCases.push(testCase);

            updateTestCases(this);

            textBox.value = '';
        } else {
            alert('You must enter a test case name');
        }
    }

    private buildInitialData(): TestCase[] {
        return [{
            name: 'The app should not crash on startup',
            isPassing: true,
            id: '1'
        }];
    }

    public findTestCaseById(id: number) {
        for (const testCase of this.testCases) {
            if (testCase.id === id) return testCase;
        }

        return null;
    }

    public deleteTestCase(testCase: TestCase) {
        const index = this.testCases.indexOf(testCase);
        this.testCases.splice(index, 1);
        updateTestCases(this);
    }
}

const testManager: TestManagerApp = new TestManagerApp();