tests: add initial tests and test runner script

6 files changed, 68 insertions, 0 deletions

diff --git a/runtests.sh b/runtests.sh
new file mode 100755
index 0000000..ddff74f
--- /dev/null
+++ b/runtests.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+if [ -z "$FORTH_CMD" ] ; then
+    FORTH_CMD="./forth"
+fi
+
+n=0
+failed=0
+
+runtest () {
+    file="$1"
+
+    output="$(mktemp)"
+    expectedoutput="$(mktemp)"
+    sed '0,/^INPUT$/d;/^OUTPUT$/,$d' "$file" | "$FORTH_CMD" > "$output" &2> /dev/null
+    sed '0,/^OUTPUT$/d' "$file" > "$expectedoutput"
+
+    diff="$(diff -w -y "$output" "$expectedoutput")"
+
+    if [ "1" -eq "$?" ] ; then
+        echo "Test $n failed: $file" >&2
+        echo "Diff:" >&2
+        echo "$diff"
+        exitcode=1
+        failed="$(expr "$failed" + 1)"
+
+    fi
+}
+
+for f in ./tests/*; do
+    n="$(expr "$n" + 1)"
+    runtest "$f"
+done
+
+if [ "0" -eq "$failed" ]; then
+    echo "All $n tests passed" >&2
+    exit 0
+else
+    echo "$failed/$n tests failed" >&2
+fi
diff --git a/tests/add.forth b/tests/add.forth
new file mode 100644
index 0000000..690bdba
--- /dev/null
+++ b/tests/add.forth
@@ -0,0 +1,4 @@
+INPUT
+1 3 + .
+OUTPUT
+4
diff --git a/tests/define-countdown.forth b/tests/define-countdown.forth
new file mode 100644
index 0000000..539b229
--- /dev/null
+++ b/tests/define-countdown.forth
@@ -0,0 +1,9 @@
+INPUT
+: countdown dup 0 = not if peek 1 - countdown then ;
+5 countdown
+OUTPUT
+5
+4
+3
+2
+1
diff --git a/tests/define-mult.forth b/tests/define-mult.forth
new file mode 100644
index 0000000..5b6f798
--- /dev/null
+++ b/tests/define-mult.forth
@@ -0,0 +1,6 @@
+INPUT
+: multrec over if rot swap over + rot 1 - swap multrec then ;
+: mult 0 multrec ;
+6 8 mult .
+OUTPUT
+48
diff --git a/tests/simple-if.forth b/tests/simple-if.forth
new file mode 100644
index 0000000..668ea0d
--- /dev/null
+++ b/tests/simple-if.forth
@@ -0,0 +1,5 @@
+INPUT
+1 1 = if 5 . then 8 .
+OUTPUT
+5
+8
diff --git a/tests/simple-if2.forth b/tests/simple-if2.forth
new file mode 100644
index 0000000..92bbc6b
--- /dev/null
+++ b/tests/simple-if2.forth
@@ -0,0 +1,4 @@
+INPUT
+0 if 5 . then 8 .
+OUTPUT
+8