diff --git a/tests/testdataducktype.in b/tests/testdataducktype.in
new file mode 100644
index 0000000..b85905e
--- /dev/null
+++ b/tests/testdataducktype.in
@@ -0,0 +1 @@
+1 2 3
diff --git a/tests/testdatafloatprec.in b/tests/testdatafloatprec.in
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/tests/testdatafloatprec.in
@@ -0,0 +1 @@
+1
diff --git a/tests/testdataloopvar.in b/tests/testdataloopvar.in
new file mode 100644
index 0000000..6e8183b
--- /dev/null
+++ b/tests/testdataloopvar.in
@@ -0,0 +1 @@
+0 1
diff --git a/tests/testdatarecharclass.in b/tests/testdatarecharclass.in
new file mode 100644
index 0000000..7cbf637
--- /dev/null
+++ b/tests/testdatarecharclass.in
@@ -0,0 +1,2 @@
+9
+	 040abcdefghiz
diff --git a/tests/testdatarerepetitions.in b/tests/testdatarerepetitions.in
new file mode 100644
index 0000000..ee21405
--- /dev/null
+++ b/tests/testdatarerepetitions.in
@@ -0,0 +1 @@
+abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqr
diff --git a/tests/testdatarescape.in b/tests/testdatarescape.in
new file mode 100644
index 0000000..56ce902
--- /dev/null
+++ b/tests/testdatarescape.in
@@ -0,0 +1 @@
+(((.
diff --git a/tests/testdatastrcmp.in b/tests/testdatastrcmp.in
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/tests/testdatastrcmp.in
@@ -0,0 +1 @@
+1
diff --git a/tests/testprogducktype.in b/tests/testprogducktype.in
new file mode 100644
index 0000000..ea9d483
--- /dev/null
+++ b/tests/testprogducktype.in
@@ -0,0 +1,7 @@
+SET(n = 3)
+SET(a = 0) # a is 0
+REPI(i, n, SPACE)
+    INT(1, 10, a[i]) # no, changed my mind, a is an array
+END
+NEWLINE
+ASSERT(UNIQUE(a))
diff --git a/tests/testprogfloatprec.in b/tests/testprogfloatprec.in
new file mode 100644
index 0000000..a184ddb
--- /dev/null
+++ b/tests/testprogfloatprec.in
@@ -0,0 +1,8 @@
+INT(1, 100) NEWLINE
+
+SET(q=0.004)
+SET(p=0)
+REP(250)
+   SET(p = p+q)
+END
+ASSERT(p <= 1.0)
diff --git a/tests/testprogloopvar.in b/tests/testprogloopvar.in
new file mode 100644
index 0000000..e0d5f0d
--- /dev/null
+++ b/tests/testprogloopvar.in
@@ -0,0 +1,6 @@
+# Read at least 2 bits (space-separated)
+WHILEI(i,!MATCH("\n"), SPACE)
+  INT(0,1)
+END
+ASSERT(i>=2)
+NEWLINE
diff --git a/tests/testprogrecharclass.in b/tests/testprogrecharclass.in
new file mode 100644
index 0000000..47fb16c
--- /dev/null
+++ b/tests/testprogrecharclass.in
@@ -0,0 +1 @@
+REGEX("\d\s{3}\d{3}\w{10}") NEWLINE
diff --git a/tests/testprogrerepetitions.in b/tests/testprogrerepetitions.in
new file mode 100644
index 0000000..289f1eb
--- /dev/null
+++ b/tests/testprogrerepetitions.in
@@ -0,0 +1,2 @@
+# Check regex repetitions
+REGEX("[a-z]{1,1500}") NEWLINE
diff --git a/tests/testprogrescape.in b/tests/testprogrescape.in
new file mode 100644
index 0000000..4422ccf
--- /dev/null
+++ b/tests/testprogrescape.in
@@ -0,0 +1,2 @@
+# Tests regexes with escaped symbols
+REGEX("\({1,5}\.{1,5}") NEWLINE
diff --git a/tests/testprogstrcmp.in b/tests/testprogstrcmp.in
new file mode 100644
index 0000000..354950f
--- /dev/null
+++ b/tests/testprogstrcmp.in
@@ -0,0 +1,7 @@
+# String comparisons
+STRING("1") NEWLINE
+SET(x = "abc")
+SET(y = "hello")
+ASSERT(x < "b")
+ASSERT(y >= "helln")
+ASSERT(x != y)