66 lines
No EOL
1.6 KiB
Kotlin
66 lines
No EOL
1.6 KiB
Kotlin
package prolog.builtins
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import org.junit.jupiter.api.Assertions.assertFalse
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import org.junit.jupiter.api.Assertions.assertTrue
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import org.junit.jupiter.api.BeforeEach
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import org.junit.jupiter.api.Test
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import prolog.Program
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import prolog.ast.logic.Fact
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import prolog.ast.terms.Atom
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class ControlBuiltinsTest {
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@BeforeEach
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fun setUp() {
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Program.clear()
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}
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@Test
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fun not_atom() {
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val success = Fact(Atom("a"))
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Program.load(listOf(success))
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val goal = Atom("a")
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val notGoal = Not(goal)
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val result1 = Program.query(goal)
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val result2 = Program.query(notGoal)
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assertTrue(result1.any(), "Expected query to succeed")
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assertFalse(result2.any(), "Expected query to fail")
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}
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@Test
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fun not_compound() {
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val success = Fact(Atom("f"))
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val failure = Fact(Atom("g"))
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Program.load(listOf(success, failure))
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val goal = Atom("f")
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val notGoal = Not(Atom("g"))
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val result1 = Program.query(goal)
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val result2 = Program.query(notGoal)
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assertTrue(result1.any(), "Expected query to succeed")
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assertFalse(result2.any(), "Expected query to fail")
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}
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@Test
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fun fail_should_cause_fails() {
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val success = Fact(Atom("a"))
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val failure = Fact(Atom("b"))
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Program.load(listOf(success, failure))
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val goal = Atom("a")
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val failGoal = Fail()
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val result1 = Program.query(goal)
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val result2 = Program.query(failGoal)
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assertTrue(result1.any(), "Expected query to succeed")
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assertFalse(result2.any(), "Expected query to fail")
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}
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} |