50 lines
1.5 KiB
Kotlin
50 lines
1.5 KiB
Kotlin
/*
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* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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import kotlinx.coroutines.test.runTest
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import net.sergeych.lyng.eval
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import net.sergeych.lyng.obj.ObjBool
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import kotlin.test.Test
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import kotlin.test.assertEquals
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class LocalRealMemberInferenceRegressionTest {
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@Test
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fun sqrtInitializedLocalVarKeepsRealReceiverTypeForMembers() = runTest {
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val result = eval(
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"""
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fun probe(T: Real, c: Real, g: Real): Bool {
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fun passthrough(h: Real): Real = h / c
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val term = 1.0 + g * T / c
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val sqrtTerm = sqrt(1.0 + 2.0 * g * T / c)
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assert(sqrtTerm is Real)
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assert(!sqrtTerm.isNaN())
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var h = (c * c / g) * (term - sqrtTerm)
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assert(passthrough(h) >= 0.0)
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assert(h is Real)
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!h.isNaN()
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}
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probe(6.0, 340.0, 9.81)
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""".trimIndent()
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)
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assertEquals(ObjBool(true), result)
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}
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}
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