91 lines
3.4 KiB
Plaintext
91 lines
3.4 KiB
Plaintext
open Jest
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open Reducer_TestHelpers
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describe("Arity check", () => {
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testEvalToBe("f(x,y) = x + y; f(1,2)", "Ok(3)")
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testEvalToBe(
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"f(x,y) = x + y; f(1)",
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"Error(2 arguments expected. Instead 1 argument(s) were passed.)",
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)
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testEvalToBe(
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"f(x,y) = x + y; f(1,2,3)",
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"Error(2 arguments expected. Instead 3 argument(s) were passed.)",
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)
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testEvalToBe(
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"f(x,y)=x+y; f(1,2,3,4)",
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"Error(2 arguments expected. Instead 4 argument(s) were passed.)",
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)
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testEvalToBe(
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"f(x,y)=x+y; f(1)",
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"Error(2 arguments expected. Instead 1 argument(s) were passed.)",
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)
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testEvalToBe(
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"f(x,y)=x(y); f(f)",
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"Error(2 arguments expected. Instead 1 argument(s) were passed.)",
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)
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testEvalToBe("f(x)=x; f(f)", "Ok(lambda(x=>internal code))")
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testEvalToBe(
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"f(x,y)=x(y); f(1)",
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"Error(2 arguments expected. Instead 1 argument(s) were passed.)",
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)
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})
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describe("symbol not defined", () => {
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testEvalToBe("f(x)=x(y); f(f)", "Error(y is not defined)")
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testEvalToBe("f(x)=x; f(f)", "Ok(lambda(x=>internal code))")
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testEvalToBe("f(x)=x(y); f(z)", "Error(z is not defined)")
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testEvalToBe("f(x)=x(y); f(2)", "Error(2 is not a function)")
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testEvalToBe("f(x)=x(1); f(2)", "Error(2 is not a function)")
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})
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describe("call and bindings", () => {
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testEvalToBe("f(x)=x+1", "Ok({f: lambda(x=>internal code)})")
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testEvalToBe("f(x)=x+1; f(1)", "Ok(2)")
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testEvalToBe("f=1;y=2", "Ok({f: 1,y: 2})")
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testEvalToBe("f(x)=x+1; y=f(1)", "Ok({f: lambda(x=>internal code),y: 2})")
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testEvalToBe("f(x)=x+1; y=f(1); f(1)", "Ok(2)")
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testEvalToBe("f(x)=x+1; y=f(1); z=f(1)", "Ok({f: lambda(x=>internal code),y: 2,z: 2})")
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testEvalToBe(
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"f(x)=x+1; g(x)=f(x)+1",
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"Ok({f: lambda(x=>internal code),g: lambda(x=>internal code)})",
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)
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testParseToBe(
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"f=99; g(x)=f; g(2)",
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"Ok({(:$_let_$ :f {99}); (:$_let_$ :g (:$$_lambda_$$ [x] {:f})); (:g 2)})",
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)
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testEvalToBe("f=99; g(x)=f; g(2)", "Ok(99)")
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testEvalToBe("f(x)=x; g(x)=f(x); g(2)", "Ok(2)")
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testEvalToBe(
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"f(x)=x+1; g(x)=f(x)+1; y=g(2)",
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"Ok({f: lambda(x=>internal code),g: lambda(x=>internal code),y: 4})",
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)
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testEvalToBe("f(x)=x+1; g(x)=f(x)+1; g(2)", "Ok(4)")
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})
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describe("function tricks", () => {
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testEvalError("f(x)=f(y)=2; f(2)") //Error because chain assignment is not allowed
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testEvalToBe("y=2;g(x)=y+1;g(2)", "Ok(3)")
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testEvalToBe("y=2;g(x)=inspect(y)+1", "Ok({g: lambda(x=>internal code),y: 2})")
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MySkip.testEvalToBe("f(x) = x(x); f(f)", "????") // TODO: Infinite loop. Any solution? Catching proper exception or timeout?
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MySkip.testEvalToBe("f(x, x)=x+x; f(1,2)", "????") // TODO: Duplicate parameters
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testEvalToBe("myadd(x,y)=x+y; z=myadd; z", "Ok(lambda(x,y=>internal code))")
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testEvalToBe("myadd(x,y)=x+y; z=myadd; z(1, 1)", "Ok(2)")
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})
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describe("lambda in structures", () => {
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testEvalToBe(
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"myadd(x,y)=x+y; z=[myadd]",
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"Ok({myadd: lambda(x,y=>internal code),z: [lambda(x,y=>internal code)]})",
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)
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testEvalToBe("myadd(x,y)=x+y; z=[myadd]; z[0]", "Ok(lambda(x,y=>internal code))")
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testEvalToBe("myadd(x,y)=x+y; z=[myadd]; z[0](3,2)", "Ok(5)")
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testEvalToBe("myaddd(x,y)=x+y; z={x: myaddd}; z", "Ok({x: lambda(x,y=>internal code)})")
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testEvalToBe("myaddd(x,y)=x+y; z={x: myaddd}; z.x", "Ok(lambda(x,y=>internal code))")
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testEvalToBe("myaddd(x,y)=x+y; z={x: myaddd}; z.x(3,2)", "Ok(5)")
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})
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describe("ternary and bindings", () => {
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testEvalToBe("f(x)=x ? 1 : 0; f(true)", "Ok(1)")
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testEvalToBe("f(x)=x>2 ? 1 : 0; f(3)", "Ok(1)")
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})
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