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import do_setup from require 'spec.test_setup'
import ValueStream, Result, Scope, SimpleRegistry from require 'alv'
import Op, Builtin from require 'alv.base'
class TestOp extends Op
new: (...) => super ...
class TestBuiltin extends Builtin
new: (...) =>
setup do_setup
describe 'ValueStream', ->
describe '.wrap', ->
it 'wraps numbers', ->
got = ValueStream.wrap 3
assert.is.equal 'num', got.type
assert.is.equal 3, got.value
it 'wraps strings', ->
got = ValueStream.wrap "im a happy string"
assert.is.equal 'str', got.type
assert.is.equal "im a happy string", got.value
it 'wraps Values', ->
pi = ValueStream 'num', 3.14
got = ValueStream.wrap pi
assert.is.equal pi, got
it 'wraps Opdefs', ->
got = ValueStream.wrap TestOp
assert.is.equal 'opdef', got.type
assert.is.equal TestOp, got.value
it 'wraps Bultins', ->
got = ValueStream.wrap TestBuiltin
assert.is.equal 'builtin', got.type
assert.is.equal TestBuiltin, got.value
it 'wraps Scopes', ->
sub = Scope!
got = ValueStream.wrap sub
assert.is.equal 'scope', got.type
assert.is.equal sub, got.value
it 'wraps tables', ->
pi = ValueStream 'num', 3.14
got = ValueStream.wrap { :pi }
assert.is.equal 'scope', got.type
assert.is.equal pi, (got.value\get 'pi')\const!
describe ':unwrap', ->
it 'returns the raw value!', ->
assert.is.equal 3.14, (ValueStream.num 3.14)\unwrap!
assert.is.equal 'hi', (ValueStream.str 'hi')\unwrap!
assert.is.equal 'hi', (ValueStream.sym 'hi')\unwrap!
test 'can assert the type', ->
assert.is.equal 3.14, (ValueStream.num 3.14)\unwrap 'num'
assert.is.equal 'hi', (ValueStream.str 'hi')\unwrap 'str'
assert.is.equal 'hi', (ValueStream.sym 'hi')\unwrap 'sym'
assert.has_error -> (ValueStream.num 3.14)\unwrap 'sym'
assert.has_error -> (ValueStream.str 'hi')\unwrap 'num'
assert.has_error -> (ValueStream.sym 'hi')\unwrap 'str'
test 'has __call shorthand', ->
assert.is.equal 3.14, (ValueStream.num 3.14)!
assert.is.equal 'hi', (ValueStream.str 'hi')!
assert.is.equal 'hi', (ValueStream.sym 'hi')!
assert.is.equal 3.14, (ValueStream.num 3.14) 'num'
assert.is.equal 'hi', (ValueStream.str 'hi') 'str'
assert.is.equal 'hi', (ValueStream.sym 'hi') 'sym'
assert.has_error -> (ValueStream.num 3.14) 'sym'
assert.has_error -> (ValueStream.str 'hi') 'num'
assert.has_error -> (ValueStream.sym 'hi') 'str'
describe 'overrides __eq', ->
it 'compares the type', ->
val = ValueStream 'num', 3
assert.is.equal (ValueStream.num 3), val
assert.not.equal (ValueStream.str '3'), val
val = ValueStream 'str', 'hello'
assert.is.equal (ValueStream.str 'hello'), val
assert.not.equal (ValueStream.sym 'hello'), val
it 'compares the value', ->
val = ValueStream 'num', 3
assert.is.equal (ValueStream.num 3), val
assert.not.equal (ValueStream.num 4), val
describe ':set', ->
it 'sets the value', ->
val = ValueStream 'num', 3
assert.is.equal (ValueStream.num 3), val
val\set 4
assert.is.equal (ValueStream.num 4), val
assert.not.equal (ValueStream.num 3), val
it 'marks the value dirty', ->
val = ValueStream 'num', 3
assert.is.false val\dirty!
val\set 4
assert.is.true val\dirty!
describe ':eval', ->
it 'turns numbers into consts', ->
assert_noop = (val) ->
assert.is.equal val, val\eval!\const!
assert_noop ValueStream.num 2
assert_noop ValueStream.str 'hello'
it 'looks up symbols in the scope', ->
scope = with Scope!
\set 'number', Result value: ValueStream.num 3
\set 'hello', Result value: ValueStream.str "world"
\set 'goodbye', Result value: ValueStream.sym "again"
assert_eval = (sym, val) ->
const = ValueStream.sym sym
assert.is.equal val, (const\eval scope)\const!
assert_eval 'number', ValueStream.num 3
assert_eval 'hello', ValueStream.str "world"
assert_eval 'goodbye', ValueStream.sym "again"
it ':clone sliterals as themselves', ->
assert_noop = (val) -> assert.is.equal val, val\clone!
assert_noop ValueStream.num 2
assert_noop ValueStream.str 'hello'
assert_noop ValueStream.sym 'world'
describe ':fork', ->
it 'is equal to the original', ->
a = ValueStream.num 2
b = ValueStream.str 'asdf'
c = with ValueStream 'weird', {}, '(raw)'
\set {}
aa, bb, cc = a\fork!, b\fork!, c\fork!
assert.is.equal a, aa
assert.is.equal b, bb
assert.is.equal c, cc
assert.is.false aa\dirty!
assert.is.false bb\dirty!
assert.is.true cc\dirty!
assert.is.equal c.raw, cc.raw
it 'isolates the original from the fork', ->
a = ValueStream.num 3
b = with ValueStream 'weird', {}, '(raw)'
\set {}
aa, bb = a\fork!, b\fork!
bb\set {false}
assert.is.same {}, b!
assert.is.same {false}, bb!
assert.is.true b\dirty!
assert.is.true bb\dirty!
COPILOT\next_tick!
aa\set 4
assert.is.equal 3, a!
assert.is.equal 4, aa!
assert.is.false a\dirty!
assert.is.true aa\dirty!
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