<!DOCTYPE html>
<html>
<head>
<script src="../../http/tests/inspector/resources/inspector-test.js"></script>
<script src="resources/shaderProgram-utilities.js"></script>
<script id="vertex-shader" type="x-shader/x-vertex">
    void main(void) {
        gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
    }
</script>
<script id="fragment-shader" type="x-shader/x-fragment">
    precision mediump float;

    void main(void) {
        gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);
    }
</script>
<script>
function load() {
    createProgram("webgl");
    linkProgram("vertex-shader", "fragment-shader");

    runTest();
}

function test() {
    let suite = InspectorTest.createAsyncSuite("Canvas.updateShader");

    function validSourceTest({name, shaderType, source}) {
        suite.addTestCase({
            name,
            test(resolve, reject) {
                let shaderProgram = WI.canvasManager.shaderPrograms[0];
                if (!shaderProgram) {
                    reject("Missing shader program")
                    return;
                }

                let programId = shaderProgram.identifier;

                CanvasAgent.updateShader(programId, shaderType, source)
                .then(() => CanvasAgent.requestShaderSource(programId, shaderType))
                .then(({content}) => InspectorTest.log(content))
                .then(resolve, reject);
            }
        });
    }

    validSourceTest({
        name: "Canvas.updateShader.vertexShaderValid",
        shaderType: CanvasAgent.ShaderType.Vertex,
        source: `
    void main(void) {
        gl_Position = vec4(1, 2, 3, 4);
    }
`,
    });

    validSourceTest({
        name: "Canvas.updateShader.fragmentShaderValid",
        shaderType: CanvasAgent.ShaderType.Fragment,
        source: `
    precision mediump float;

    void main(void) {
        gl_FragColor = vec4(0.1, 0.2, 0.3, 0.4);
    }
`,
    });

    suite.addTestCase({
        name: "Canvas.updateShader.invalidProgramId",
        description: "Invalid program identifiers should cause an error.",
        test(resolve, reject) {
            const programId = "INVALID_PROGRAM_ID";
            const shaderType = "INVALID_SHADER_TYPE";
            const source = "INVALID_SOURCE";
            CanvasAgent.updateShader(programId, shaderType, source, (error) => {
                InspectorTest.expectThat(error, "Should produce an error.");
                InspectorTest.log("Error: " + error);
                resolve();
            });
        }
    });

    suite.addTestCase({
        name: "Canvas.updateShader.invalidShaderType",
        description: "Invalid shader types should cause an error.",
        test(resolve, reject) {
            let shaderProgram = WI.canvasManager.shaderPrograms[0];
            if (!shaderProgram) {
                reject("Missing shader program")
                return;
            }

            const shaderType = "INVALID_SHADER_TYPE";
            const source = "INVALID_SOURCE";
            CanvasAgent.updateShader(shaderProgram.identifier, shaderType, source, (error) => {
                InspectorTest.expectThat(error, "Should produce an error.");
                InspectorTest.log("Error: " + error);
                resolve();
            });
        }
    });

    function invalidSourceTest({name, shaderType, source}) {
        suite.addTestCase({
            name,
            test(resolve, reject) {
                let shaderProgram = WI.canvasManager.shaderPrograms[0];
                if (!shaderProgram) {
                    reject("Missing shader program")
                    return;
                }

                CanvasAgent.updateShader(shaderProgram.identifier, shaderType, source, (error) => {
                    InspectorTest.expectThat(error, "Should produce error.");
                    InspectorTest.log("Error: " + error);
                    resolve();
                });
            }
        });
    }

    invalidSourceTest({
        name: "Canvas.updateShader.invalidVertexShaderSource",
        shaderType: CanvasAgent.ShaderType.Vertex,
        source: "INVALID",
    });

    invalidSourceTest({
        name: "Canvas.updateShader.invalidFragmentShaderSource",
        shaderType: CanvasAgent.ShaderType.Fragment,
        source: "INVALID",
    });

    suite.runTestCasesAndFinish();
}
</script>
</head>
<body onload="load()">
    <p>Test compilation of shaders after being attached to a program, with and without syntax errors.</p>
</body>
</html>