[gnome-calculator/60-split-out-a-backend-library] gcalc: added tests for terms as variables and constants

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 81b732365f12cc58db5cd6dacc8e04a382aa5a7d
Author: Daniel Espinosa Ortiz <esodan gmail com>
Date:   Thu Jan 3 09:43:22 2019 -0600

    gcalc: added tests for terms as variables and constants

 tests/gcalc-main-interfaces.vala | 58 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
---
diff --git a/tests/gcalc-main-interfaces.vala b/tests/gcalc-main-interfaces.vala
index cc0b279d..5339b95b 100644
--- a/tests/gcalc-main-interfaces.vala
+++ b/tests/gcalc-main-interfaces.vala
@@ -164,6 +164,64 @@ class Tests {
         warning ("Error: %s", error.message);
       }
     });
+    Test.add_func ("/gcalc/parser/term/plus/variables+constant",
+    ()=>{
+      try {
+        var parser = new Parser ();
+        var eqman = new GMathEquationManager ();
+        parser.parse ("A+1", eqman);
+        assert (eqman.equations.get_n_items () == 1);
+        var eq = eqman.equations.get_item (0) as MathEquation;
+        assert (eq != null);
+        assert (eq.expressions.get_n_items () == 1);
+        var p = eq.expressions.get_item (0) as Polynomial;
+        assert (p != null);
+        assert (p.expressions.get_n_items () == 2);
+        var t1 = p.expressions.get_item (0) as Term;
+        assert (t1 != null);
+        assert (t1.expressions.get_n_items () == 1);
+        var c1 = t1.expressions.get_item (0) as Variable;
+        assert (c1 != null);
+        var t2 = p.expressions.get_item (1) as Term;
+        assert (t2 != null);
+        assert (t2.expressions.get_n_items () == 2);
+        var plus = t2.expressions.get_item (0) as Plus;
+        assert (plus != null);
+        var c2 = t2.expressions.get_item (1) as Constant;
+        assert (c2 != null);
+      } catch (GLib.Error error) {
+        warning ("Error: %s", error.message);
+      }
+    });
+    Test.add_func ("/gcalc/parser/term/plus/constant+variable",
+    ()=>{
+      try {
+        var parser = new Parser ();
+        var eqman = new GMathEquationManager ();
+        parser.parse ("1+B", eqman);
+        assert (eqman.equations.get_n_items () == 1);
+        var eq = eqman.equations.get_item (0) as MathEquation;
+        assert (eq != null);
+        assert (eq.expressions.get_n_items () == 1);
+        var p = eq.expressions.get_item (0) as Polynomial;
+        assert (p != null);
+        assert (p.expressions.get_n_items () == 2);
+        var t1 = p.expressions.get_item (0) as Term;
+        assert (t1 != null);
+        assert (t1.expressions.get_n_items () == 1);
+        var c1 = t1.expressions.get_item (0) as Constant;
+        assert (c1 != null);
+        var t2 = p.expressions.get_item (1) as Term;
+        assert (t2 != null);
+        assert (t2.expressions.get_n_items () == 2);
+        var plus = t2.expressions.get_item (0) as Plus;
+        assert (plus != null);
+        var c2 = t2.expressions.get_item (1) as Variable;
+        assert (c2 != null);
+      } catch (GLib.Error error) {
+        warning ("Error: %s", error.message);
+      }
+    });
     return Test.run ();
   }
 }