test: add special case test in airy

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---

Author: rreusser

lib/node_modules/@stdlib/math/base/special/airy/test/test.main.js

@@ -249,6 +249,15 @@ tape( 'the function evaluates the Airy functions Ai(x), Bi(x) and derivatives (s
 	t.end();
 });
 
+tape( 'the function returns correct values if provided `0.0`', function test( t ) {
+	var v = airy( 0.0 );
+	t.strictEqual( v[0], 0.355028053887817, 'returns expected value' );
+	t.strictEqual( v[1], -0.258819403792807, 'returns expected value' );
+	t.strictEqual( v[2], 0.6149266274460002, 'returns expected value' );
+	t.strictEqual( v[3], 0.44828835735382666, 'returns expected value' );
+	t.end();
+});
+
 tape( 'the function returns `NaN` if provided `NaN`', function test( t ) {
 	var v = airy( NaN );
 	t.strictEqual( isnan( v[0] ), true, 'returns expected value' );