commons/src/commonTest/kotlin/org/jetbrains/letsPlot/commons/interval/DoubleSpanTest.kt [62:148]:
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    @Test
    fun isConnected() {
        val r = range(-1, 1)
        assertFalse(r.connected(range(-3, -2)))
        assertTrue(r.connected(range(-3, -1)))
        assertTrue(r.connected(range(-3, 0)))
        assertTrue(r.connected(range(-1, 0)))
        assertTrue(r.connected(range(-2, 0)))
        assertTrue(r.connected(range(-2, 2)))
        assertTrue(r.connected(range(0, 3)))
        assertTrue(r.connected(range(1, 3)))
        assertFalse(r.connected(range(2, 3)))
    }

    @Test
    fun encloses() {
        val r = range(-2, 2)
        assertFalse(r.encloses(range(-3, -3)))
        assertFalse(r.encloses(range(-3, -2)))
        assertFalse(r.encloses(range(-3, 0)))
        assertTrue(r.encloses(range(-1, 0)))
        assertTrue(r.encloses(range(-2, 0)))
        assertTrue(r.encloses(range(-2, 2)))
        assertFalse(r.encloses(range(0, 3)))
        assertFalse(r.encloses(range(2, 3)))
        assertFalse(r.encloses(range(3, 3)))
    }

    @Test
    fun span() {
        val r = range(-2, 2)
        val inner = range(-1, 1)
        assertSame(r, r.union(inner))
        assertSame(r, r.union(r))
        assertSame(r, inner.union(r))

        assertUnion(
            range(-3, 2),
            r,
            range(-3, 1)
        )
        assertUnion(
            range(-2, 3),
            r,
            range(-1, 3)
        )
        assertUnion(
            range(-5, 2),
            r,
            range(-5, -3)
        )
        assertUnion(
            range(-2, 5),
            r,
            range(3, 5)
        )
    }


    @Test
    fun intersection() {
        val r = range(-2, 2)
        val inner = range(-1, 1)
        assertSame(inner, r.intersection(inner))
        assertSame(r, r.intersection(r))
        assertSame(inner, inner.intersection(r))

        assertFailsWith<IllegalArgumentException> {
            val outer = range(-5, -3)
            r.intersection(outer)
        }

        assertFailsWith<IllegalArgumentException> {
            val outer = range(3, 5)
            r.intersection(outer)
        }

        assertIntersection(
            range(-2, 1),
            r,
            range(-3, 1)
        )
        assertIntersection(
            range(-1, 2),
            r,
            range(-1, 3)
        )
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commons/src/commonTest/kotlin/org/jetbrains/letsPlot/commons/interval/IntSpanTest.kt [52:138]:
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    @Test
    fun isConnected() {
        val r = range(-1, 1)
        assertFalse(r.connected(range(-3, -2)))
        assertTrue(r.connected(range(-3, -1)))
        assertTrue(r.connected(range(-3, 0)))
        assertTrue(r.connected(range(-1, 0)))
        assertTrue(r.connected(range(-2, 0)))
        assertTrue(r.connected(range(-2, 2)))
        assertTrue(r.connected(range(0, 3)))
        assertTrue(r.connected(range(1, 3)))
        assertFalse(r.connected(range(2, 3)))
    }

    @Test
    fun encloses() {
        val r = range(-2, 2)
        assertFalse(r.encloses(range(-3, -3)))
        assertFalse(r.encloses(range(-3, -2)))
        assertFalse(r.encloses(range(-3, 0)))
        assertTrue(r.encloses(range(-1, 0)))
        assertTrue(r.encloses(range(-2, 0)))
        assertTrue(r.encloses(range(-2, 2)))
        assertFalse(r.encloses(range(0, 3)))
        assertFalse(r.encloses(range(2, 3)))
        assertFalse(r.encloses(range(3, 3)))
    }

    @Test
    fun span() {
        val r = range(-2, 2)
        val inner = range(-1, 1)
        assertSame(r, r.union(inner))
        assertSame(r, r.union(r))
        assertSame(r, inner.union(r))

        assertUnion(
            range(-3, 2),
            r,
            range(-3, 1)
        )
        assertUnion(
            range(-2, 3),
            r,
            range(-1, 3)
        )
        assertUnion(
            range(-5, 2),
            r,
            range(-5, -3)
        )
        assertUnion(
            range(-2, 5),
            r,
            range(3, 5)
        )
    }


    @Test
    fun intersection() {
        val r = range(-2, 2)
        val inner = range(-1, 1)
        assertSame(inner, r.intersection(inner))
        assertSame(r, r.intersection(r))
        assertSame(inner, inner.intersection(r))

        assertFailsWith<IllegalArgumentException> {
            val outer = range(-5, -3)
            r.intersection(outer)
        }

        assertFailsWith<IllegalArgumentException> {
            val outer = range(3, 5)
            r.intersection(outer)
        }

        assertIntersection(
            range(-2, 1),
            r,
            range(-3, 1)
        )
        assertIntersection(
            range(-1, 2),
            r,
            range(-1, 3)
        )
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