, "should be no errors from texParameteri");
        shouldBe(`gl.getTexParameter(gl.TEXTURE_2D, gl.${pname})`, "ext.MIRROR_CLAMP_TO_EDGE_EXT");
        gl.texParameteri(gl.TEXTURE_2D, gl[pname], gl.REPEAT);

        gl.texParameterf(gl.TEXTURE_2D, gl[pname], ext.MIRROR_CLAMP_TO_EDGE_EXT);
        wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors from texParameterf");
        shouldBe(`gl.getTexParameter(gl.TEXTURE_2D, gl.${pname})`, "ext.MIRROR_CLAMP_TO_EDGE_EXT");
        gl.texParameterf(gl.TEXTU