77 lines
3.4 KiB
Plaintext
77 lines
3.4 KiB
Plaintext
open Jest
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open Reducer_TestHelpers
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describe("reducer using mathjs parse", () => {
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// Test the MathJs parser compatibility
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// Those tests show that there is a semantic mapping from MathJs to CodeTree
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// Reducer.parse is called by Reducer.eval
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// See https://mathjs.org/docs/expressions/syntax.html
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// See https://mathjs.org/docs/reference/functions.html
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// Those tests show that we are converting mathjs parse tree to what we need
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describe("expressions", () => {
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test("1", () => expectParseToBe("1", "Ok(1)"))
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test("(1)", () => expectParseToBe( "(1)", "Ok(1)"))
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test("1+2", () => expectParseToBe( "1+2", "Ok((:add 1 2))"))
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test("(1+2)", () => expectParseToBe( "1+2", "Ok((:add 1 2))"))
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test("add(1,2)", () => expectParseToBe( "1+2", "Ok((:add 1 2))"))
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test("1+2*3", () => expectParseToBe( "1+2*3", "Ok((:add 1 (:multiply 2 3)))"))
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})
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describe("arrays", () => {
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//Note. () is a empty list in Lisp
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// The only builtin structure in Lisp is list. There are no arrays
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// [1,2,3] becomes (1 2 3)
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test("empty", () => expectParseToBe( "[]", "Ok(())"))
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test("[1, 2, 3]", () => expectParseToBe( "[1, 2, 3]", "Ok((1 2 3))"))
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test("['hello', 'world']", () =>
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expectParseToBe( "['hello', 'world']", "Ok(('hello' 'world'))"))
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test("index", () => expectParseToBe("([0,1,2])[1]", "Ok((:$atIndex (0 1 2) (1)))"))
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})
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describe("records", () => {
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test("define", () => expectParseToBe("{a: 1, b: 2}", "Ok((:$constructRecord (('a' 1) ('b' 2))))"))
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test("use", () =>
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expectParseToBe("{a: 1, b: 2}.a", "Ok((:$atIndex (:$constructRecord (('a' 1) ('b' 2))) ('a')))"))
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})
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})
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describe("eval", () => {
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// All MathJs operators and functions are builtin for string, float and boolean
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// .e.g + - / * > >= < <= == /= not and or
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// See https://mathjs.org/docs/expressions/syntax.html
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// See https://mathjs.org/docs/reference/functions.html
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describe("expressions", () => {
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test("1", () => expectEvalToBe( "1", "Ok(1)"))
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test("1+2", () => expectEvalToBe( "1+2", "Ok(3)"))
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test("(1+2)*3", () => expectEvalToBe( "(1+2)*3", "Ok(9)"))
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test("2>1", () => expectEvalToBe( "2>1", "Ok(true)"))
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test("concat('a ', 'b')", () => expectEvalToBe( "concat('a ', 'b')", "Ok('a b')"))
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test("log(10)", () => expectEvalToBe( "log(10)", "Ok(2.302585092994046)"))
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test("cos(10)", () => expectEvalToBe( "cos(10)", "Ok(-0.8390715290764524)"))
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// TODO more built ins
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})
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describe("arrays", () => {
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test("empty array", () => expectEvalToBe( "[]", "Ok([])"))
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test("[1, 2, 3]", () => expectEvalToBe( "[1, 2, 3]", "Ok([1, 2, 3])"))
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test("['hello', 'world']", () => expectEvalToBe( "['hello', 'world']", "Ok(['hello', 'world'])"))
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test("index", () => expectEvalToBe("([0,1,2])[1]", "Ok(1)"))
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test("index not found", ()
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=> expectEvalToBe("([0,1,2])[10]", "Error(Array index not found: 10)"))
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})
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describe("records", () => {
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test("define", () =>
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expectEvalToBe("{a: 1, b: 2}", "Ok({a: 1, b: 2})"))
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test("index", () =>
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expectEvalToBe("{a: 1}.a", "Ok(1)"))
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test("index not found", () =>
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expectEvalToBe("{a: 1}.b", "Error(Record property not found: b)"))
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})
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})
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describe("test exceptions", () => {
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test("javascript exception", () =>
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expectEvalToBe( "jsraise('div by 0')", "Error(JS Exception: Error: 'div by 0')"))
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test("rescript exception", () =>
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expectEvalToBe( "resraise()", "Error(TODO: unhandled rescript exception)"))
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})
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