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test: add tests for random/tools/unary #9449

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313 changes: 312 additions & 1 deletion lib/node_modules/@stdlib/random/tools/unary/test/test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,8 @@
// MODULES //

var tape = require( 'tape' );
var exponential = require( '@stdlib/random/base/exponential' );
var dtypes = require( '@stdlib/ndarray/dtypes' );
var Random = require( './../lib' );


Expand All @@ -32,4 +34,313 @@ tape( 'main export is a function', function test( t ) {
t.end();
});

// FIXME: add tests
tape( 'the function throws an error if the first argument is not a function', function test( t ) {
var values;
var idt;
var odt;
var i;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

values = [
'5',
5,
NaN,
true,
false,
null,
void 0,
[],
{}
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( value, idt, odt, {
'output': 'real_floating_point_and_generic'
});
};
}
});

tape( 'the function throws an error if the second argument is not an array of data types', function test( t ) {
var values;
var odt;
var i;

odt = dtypes( 'real_floating_point_and_generic' );

values = [
'5',
5,
NaN,
true,
false,
null,
void 0,
{},
[],
[ 'foo' ],
[ 1, 2, 3 ],
[ 'float64', 1 ],
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, value, odt, {
'output': 'real_floating_point_and_generic'
});
};
}
});

tape( 'the function throws an error if the third argument is not an array of data types', function test( t ) {
var values;
var idt;
var i;

idt = dtypes( 'real_and_generic' );

values = [
'5',
5,
NaN,
true,
false,
null,
void 0,
{},
[],
[ 'foo' ],
[ 1, 2, 3 ],
[ 'float64', 1 ],
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, idt, value, {
'output': 'real_floating_point_and_generic'
});
};
}
});

tape( 'the function throws an error if the fourth argument is not an object', function test( t ) {
var values;
var idt;
var odt;
var i;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

values = [
'5',
5,
NaN,
true,
false,
null,
void 0,
[],
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, idt, odt, value );
};
}
});

tape( 'the function throws an error if the fourth argument does not have a valid output data type policy', function test( t ) {
var values;
var idt;
var odt;
var i;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

values = [
'foo',
5,
NaN,
true,
false,
null,
void 0,
[],
{},
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, idt, odt, {
'output': value
});
};
}
});

tape( 'the function throws an error if provided an options argument which is not an object', function test( t ) {
var values;
var idt;
var odt;
var i;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

values = [
'5',
5,
NaN,
true,
false,
null,
void 0,
[],
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, idt, odt, {
'output': 'real_floating_point_and_generic'
}, value );
};
}
});

tape( 'the function throws an error if provided an invalid `order` option', function test( t ) {
var values;
var idt;
var odt;
var i;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

values = [
'foo',
5,
NaN,
true,
false,
null,
void 0,
[],
{},
exponential
];

for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();

function badValue( value ) {
return function badValue() {
return new Random( exponential, idt, odt, {
'output': 'real_floating_point_and_generic'
}, {
'order': value
});
};
}
});

tape( 'the function returns an instance', function test( t ) {
var idt;
var odt;
var r;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

r = new Random( exponential, idt, odt, {
'output': 'real_floating_point_and_generic'
});
t.strictEqual( r instanceof Random, true, 'returns an instance' );
t.end();
});

tape( 'the function returns an instance (w/o new)', function test( t ) {
var idt;
var odt;
var r;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

r = Random( exponential, idt, odt, { // eslint-disable-line new-cap
'output': 'real_floating_point_and_generic'
});
t.strictEqual( r instanceof Random, true, 'returns an instance' );
t.end();
});

tape( 'the instance has a `generate` method', function test( t ) {
var idt;
var odt;
var r;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

r = new Random( exponential, idt, odt, {
'output': 'real_floating_point_and_generic'
});
t.strictEqual( typeof r.generate, 'function', 'has a generate method' );
t.end();
});

tape( 'the instance has an `assign` method', function test( t ) {
var idt;
var odt;
var r;

idt = dtypes( 'real_and_generic' );
odt = dtypes( 'real_floating_point_and_generic' );

r = new Random( exponential, idt, odt, {
'output': 'real_floating_point_and_generic'
});
t.strictEqual( typeof r.assign, 'function', 'has an assign method' );
t.end();
});