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25c520ed81
Requested by @lefticus in PR #639 review. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
104 lines
2.1 KiB
ChaiScript
104 lines
2.1 KiB
ChaiScript
// Test for class features documented in the cheatsheet
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// --- Class definition (preferred block syntax) ---
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class Rectangle {
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var width
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var height
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def Rectangle(w, h) { this.width = w; this.height = h; }
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def Rectangle() { this.width = 0; this.height = 0; }
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def area() { this.width * this.height; }
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}
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auto r = Rectangle(3, 4)
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assert_equal(12, r.area())
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// --- Default constructor ---
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auto r2 = Rectangle()
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assert_equal(0, r2.area())
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// --- Alternative open syntax ---
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attr Circle::radius
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def Circle::Circle(r) { this.radius = r; }
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def Circle::circumference() { 2.0 * 3.14159 * this.radius; }
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auto c = Circle(5.0)
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assert_equal(5.0, c.radius)
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// --- attr, auto, var all work for attributes ---
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class AttrTest {
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attr a
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auto b
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var c
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def AttrTest() { this.a = 1; this.b = 2; this.c = 3; }
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}
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auto at = AttrTest()
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assert_equal(1, at.a)
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assert_equal(2, at.b)
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assert_equal(3, at.c)
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// --- Constructor guards ---
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class Clamped {
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var value
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def Clamped(x) : x >= 0 { this.value = x; }
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def Clamped(x) { this.value = 0; }
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}
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assert_equal(5, Clamped(5).value)
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assert_equal(0, Clamped(-3).value)
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// --- Method guards ---
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class Abs {
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var x
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def Abs(v) { this.x = v; }
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def get() : this.x >= 0 { this.x; }
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def get() { -this.x; }
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}
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assert_equal(5, Abs(5).get())
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assert_equal(3, Abs(-3).get())
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// --- Operator overloading ---
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class Vec2 {
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var x
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var y
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def Vec2(x, y) { this.x = x; this.y = y; }
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def `+`(other) { Vec2(this.x + other.x, this.y + other.y); }
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}
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auto v = Vec2(1, 2) + Vec2(3, 4)
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assert_equal(4, v.x)
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assert_equal(6, v.y)
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// --- Cloning objects ---
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auto r3 = Rectangle(10, 20)
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auto r4 = clone(r3)
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r4.width = 99
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assert_equal(10, r3.width)
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assert_equal(99, r4.width)
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// --- Dynamic attributes ---
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auto r5 = Rectangle(1, 1)
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r5.color = "red"
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assert_equal("red", r5.color)
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// --- Explicit mode ---
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class Strict {
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var x
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def Strict() {
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this.x = 0
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this.set_explicit(true)
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}
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}
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auto s = Strict()
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assert_equal(0, s.x)
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assert_equal(true, s.is_explicit())
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try {
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s.y = 10
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assert_equal(true, false) // should not reach here
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} catch(e) {
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// expected: cannot add dynamic attribute in explicit mode
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}
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