From db14c531b8ed6b8419eb20789f5c5be85cefce0c Mon Sep 17 00:00:00 2001
From: Bob Nystrom <robert@stuffwithstuff.com>
Date: Mon, 28 Oct 2013 06:53:51 -0700
Subject: [PATCH] More tests for primitives.

---
 runtests                  | 2 +-
 src/primitives.c          | 3 +++
 test/number_abs.wren      | 6 ++++++
 test/string_contains.wren | 8 ++++++++
 test/string_count.wren    | 2 ++
 5 files changed, 20 insertions(+), 1 deletion(-)
 create mode 100644 test/number_abs.wren
 create mode 100644 test/string_contains.wren
 create mode 100644 test/string_count.wren

diff --git a/runtests b/runtests
index bdcbcf91..18513718 100755
--- a/runtests
+++ b/runtests
@@ -164,7 +164,7 @@ def run_test(path):
   # Display the results.
   if len(fails) == 0:
     passed += 1
-    print color.GREEN + 'PASS' + color.DEFAULT + ': ' + path
+    #print color.GREEN + 'PASS' + color.DEFAULT + ': ' + path
   else:
     failed += 1
     print_line(color.RED + 'FAIL' + color.DEFAULT + ': ' + path)
diff --git a/src/primitives.c b/src/primitives.c
index e5d9a33a..246fc0d2 100644
--- a/src/primitives.c
+++ b/src/primitives.c
@@ -35,6 +35,9 @@ DEF_PRIMITIVE(string_contains)
   // TODO(bob): Check type of arg first!
   const char* search = ((ObjString*)args[1])->value;
 
+  // Corner case, the empty string contains the empty string.
+  if (strlen(string) == 0 && strlen(search) == 0) return (Value)makeNum(1);
+
   // TODO(bob): Return bool.
   return (Value)makeNum(strstr(string, search) != NULL);
 }
diff --git a/test/number_abs.wren b/test/number_abs.wren
new file mode 100644
index 00000000..5612f46d
--- /dev/null
+++ b/test/number_abs.wren
@@ -0,0 +1,6 @@
+io.write(123.abs)    // expect: 123
+io.write(-123.abs)   // expect: 123
+io.write(0.abs)      // expect: 0
+io.write(-0.abs)     // expect: 0
+
+// TODO(bob): Floating point numbers.
diff --git a/test/string_contains.wren b/test/string_contains.wren
new file mode 100644
index 00000000..1560a450
--- /dev/null
+++ b/test/string_contains.wren
@@ -0,0 +1,8 @@
+io.write("".contains(""))   // expect: 1
+io.write("anything".contains("")) // expect: 1
+io.write("something".contains("meth")) // expect: 1
+io.write("something".contains("some")) // expect: 1
+io.write("something".contains("ing")) // expect: 1
+io.write("something".contains("math")) // expect: 0
+
+// TODO(bob): Passing non-string as argument.
diff --git a/test/string_count.wren b/test/string_count.wren
new file mode 100644
index 00000000..43aac2bc
--- /dev/null
+++ b/test/string_count.wren
@@ -0,0 +1,2 @@
+io.write("".count)   // expect: 0
+io.write("a string".count) // expect: 8