Fix print of 1 inequality (#48)

Author: blegat

README.md

@@ -32,18 +32,27 @@ julia> using SemialgebraicSets, TypedPolynomials
 julia> @polyvar x y;
 
 julia> @set x^2 + y^2 <= 1 # Euclidean ball
+Basic semialgebraic Set defined by no equality
+1 inequality
+ 1 - y^2 - x^2 ≥ 0
+
+
+julia> basic_semialgebraic_set(FullSpace(), [1 - x^2 - y^2])
+Basic semialgebraic Set defined by no equality
+1 inequality
+ 1 - y^2 - x^2 ≥ 0
 
 julia> @set y^2 == x^3 - x && x <= 0 # Cutting the algebraic variety https://en.wikipedia.org/wiki/Algebraic_variety#/media/File:Elliptic_curve2.png
-Basic semialgebraic Set defined by 1 equalitty
+Basic semialgebraic Set defined by 1 equality
  x + y^2 - x^3 = 0
-1 inequalitty
+1 inequality
  -x ≥ 0
 
 
 julia> basic_semialgebraic_set(algebraic_set([y^2- x^3 - x]), [-x])
-Basic semialgebraic Set defined by 1 equalitty
+Basic semialgebraic Set defined by 1 equality
  -x + y^2 - x^3 = 0
-1 inequalitty
+1 inequality
  -x ≥ 0
 ```
 

src/variety.jl

@@ -149,7 +149,7 @@ function _show_els(io::IO, name, n, els, sign)
     if n == 0
         println(io, "no $(name)y")
     elseif n == 1
-        println(io, "1 $(name)ty")
+        println(io, "1 $(name)y")
     else
         println(io, "$n $(name)ies")
     end

test/macro.jl

@@ -89,7 +89,7 @@ function runtests()
             _test_polynomial_API(T, (x, y))
             @test sprint(show, T) == "{ (x, y) | x - x^2 = 0, -y + y^2 ≥ 0 }"
             @test sprint(show, MIME"text/plain"(), T) ==
-                  "Basic semialgebraic Set defined by 1 equalitty\n x - x^2 = 0\n1 inequalitty\n -y + y^2 ≥ 0\n"
+                  "Basic semialgebraic Set defined by 1 equality\n x - x^2 = 0\n1 inequality\n -y + y^2 ≥ 0\n"
         end
     end
     @testset "Basic with no equality" begin
@@ -124,10 +124,10 @@ Algebraic Set defined by no equality
         _test_polynomial_API(S, (x,))
         @test sprint(show, S) == "{ (x) | -1 + x = 0, -x + x^2 ≥ 0 }"
         @test sprint(show, MIME"text/plain"(), S) ==
-              "Basic semialgebraic Set defined by 1 equalitty\n -1 + x = 0\n1 inequalitty\n -x + x^2 ≥ 0\n"
+              "Basic semialgebraic Set defined by 1 equality\n -1 + x = 0\n1 inequality\n -x + x^2 ≥ 0\n"
         @test sprint(show, S.V) == "{ (x) | -1 + x = 0 }"
         @test sprint(show, MIME"text/plain"(), S.V) ==
-              "Algebraic Set defined by 1 equalitty\n -1 + x = 0\n"
+              "Algebraic Set defined by 1 equality\n -1 + x = 0\n"
 
         S = @set x == 1 && x ≤ y && 2 == y
         _test_polynomial_API(S, (x, y))