diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/abs0.adm b/asterix-app/src/test/resources/runtimets/results/numeric/abs0.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/abs0.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/abs1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/abs1.adm
new file mode 100644
index 0000000..263ae97
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/abs1.adm
@@ -0,0 +1 @@
+{ "f0": 20i8, "f1": 23i16, "f2": 29, "f3": 21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/abs2.adm b/asterix-app/src/test/resources/runtimets/results/numeric/abs2.adm
new file mode 100644
index 0000000..a4bcbe8
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/abs2.adm
@@ -0,0 +1 @@
+{ "f0": 20.1f, "f1": 2.056E-29f, "f2": NaNf, "f3": Infinityf, "f4": Infinityf, "f5": 0.0f, "f6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/abs3.adm b/asterix-app/src/test/resources/runtimets/results/numeric/abs3.adm
new file mode 100644
index 0000000..4da3272
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/abs3.adm
@@ -0,0 +1 @@
+{ "d0": 20.1d, "d1": 2.056E-29d, "d2": NaNd, "d3": Infinityd, "d4": Infinityd, "d5": 0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/abs4.adm b/asterix-app/src/test/resources/runtimets/results/numeric/abs4.adm
new file mode 100644
index 0000000..f365181
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/abs4.adm
@@ -0,0 +1 @@
+{ "f0": 20i8, "f1": 1.11d, "f2": 12.9d, "f3": 1.11d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/ceiling0.adm b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling0.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling0.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/ceiling1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling1.adm
new file mode 100644
index 0000000..bf278a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling1.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -23i16, "f2": -29, "f3": -21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/ceiling2.adm b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling2.adm
new file mode 100644
index 0000000..96e5d3d
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling2.adm
@@ -0,0 +1 @@
+{ "f0": 21.0f, "f1": -0.0f, "f2": NaNf, "f3": Infinityf, "f4": -Infinityf, "f5": -0.0f, "f6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/ceiling3.adm b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling3.adm
new file mode 100644
index 0000000..bf497d4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling3.adm
@@ -0,0 +1 @@
+{ "d0": 21.0d, "d1": -0.0d, "d2": NaNd, "d3": Infinityd, "d4": -Infinityd, "d5": -0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/ceiling4.adm b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling4.adm
new file mode 100644
index 0000000..dcc17c0
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/ceiling4.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -1.0d, "f2": 13.0d, "f3": 2.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/floor0.adm b/asterix-app/src/test/resources/runtimets/results/numeric/floor0.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/floor0.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/floor1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/floor1.adm
new file mode 100644
index 0000000..bf278a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/floor1.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -23i16, "f2": -29, "f3": -21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/floor2.adm b/asterix-app/src/test/resources/runtimets/results/numeric/floor2.adm
new file mode 100644
index 0000000..078d1596
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/floor2.adm
@@ -0,0 +1 @@
+{ "f0": 20.0f, "f1": -1.0f, "f2": NaNf, "f3": Infinityf, "f4": -Infinityf, "f5": -0.0f, "f6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/floor3.adm b/asterix-app/src/test/resources/runtimets/results/numeric/floor3.adm
new file mode 100644
index 0000000..58bdd79
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/floor3.adm
@@ -0,0 +1 @@
+{ "d0": 20.0d, "d1": -1.0d, "d2": NaNd, "d3": Infinityd, "d4": -Infinityd, "d5": -0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/floor4.adm b/asterix-app/src/test/resources/runtimets/results/numeric/floor4.adm
new file mode 100644
index 0000000..3e972b3
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/floor4.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -2.0d, "f2": 12.0d, "f3": 1.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even0.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even0.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even0.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even1.adm
new file mode 100644
index 0000000..bf278a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even1.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -23i16, "f2": -29, "f3": -21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even2.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even2.adm
new file mode 100644
index 0000000..f5f9e3f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even2.adm
@@ -0,0 +1 @@
+{ "f0": 0.0f, "f1": -20.0f, "f2": NaNf, "f3": Infinityf, "f4": -Infinityf, "f5": -0.0f, "f6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even20.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even20.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even20.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even21.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even21.adm
new file mode 100644
index 0000000..bf278a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even21.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -23i16, "f2": -29, "f3": -21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even22.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even22.adm
new file mode 100644
index 0000000..3f0cead
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even22.adm
@@ -0,0 +1 @@
+{ "d0": 0.56f, "d1": 0.32f, "d2": NaNf, "d3": Infinityf, "d4": -Infinityf, "d5": -0.0f, "d6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even23.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even23.adm
new file mode 100644
index 0000000..914a79e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even23.adm
@@ -0,0 +1 @@
+{ "d0": 0.56d, "d1": 0.32d, "d2": NaNd, "d3": Infinityd, "d4": -Infinityd, "d5": -0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even24.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even24.adm
new file mode 100644
index 0000000..956f0ac
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even24.adm
@@ -0,0 +1 @@
+{ "d0": 0.02d, "d1": 0.02d, "d2": 3567.81d, "d3": 0.0d, "d4": 35600.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even3.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even3.adm
new file mode 100644
index 0000000..60b7c52
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even3.adm
@@ -0,0 +1 @@
+{ "d0": 0.0d, "d1": -20.0d, "d2": NaNd, "d3": Infinityd, "d4": -Infinityd, "d5": -0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even4.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even4.adm
new file mode 100644
index 0000000..5620cde
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even4.adm
@@ -0,0 +1 @@
+{ "d0": 2.0d, "d1": 2.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even5.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even5.adm
new file mode 100644
index 0000000..a53f62f
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round-half-to-even5.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -2.0d, "f2": 12.0d, "f3": 2.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round0.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round0.adm
new file mode 100644
index 0000000..61c5048
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round0.adm
@@ -0,0 +1 @@
+{ "f0": 0i8, "f1": 0i16, "f2": 0, "f3": 0i64, "f4": 0i8, "f5": 0i16, "f6": 0, "f7": 0i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round1.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round1.adm
new file mode 100644
index 0000000..bf278a1
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round1.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -23i16, "f2": -29, "f3": -21i64, "f4": 20i8, "f5": 22i16, "f6": 23, "f7": 27i64 }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round2.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round2.adm
new file mode 100644
index 0000000..791c1da
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round2.adm
@@ -0,0 +1 @@
+{ "f0": 20.0f, "f1": 0.0f, "f2": 0.0f, "f3": 2.14748365E9f, "f4": -2.14748365E9f, "f5": 0.0f, "f6": 0.0f }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round3.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round3.adm
new file mode 100644
index 0000000..1b1936d
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round3.adm
@@ -0,0 +1 @@
+{ "d0": 20.0d, "d1": 0.0d, "d2": 0.0d, "d3": 9.223372036854776E18d, "d4": -9.223372036854776E18d, "d5": 0.0d, "d6": 0.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/numeric/round4.adm b/asterix-app/src/test/resources/runtimets/results/numeric/round4.adm
new file mode 100644
index 0000000..ce70363
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/numeric/round4.adm
@@ -0,0 +1 @@
+{ "f0": -20i8, "f1": -1.0d, "f2": 13.0d, "f3": 1.0d }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string1.adm b/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string1.adm
new file mode 100644
index 0000000..fdbb861
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string1.adm
@@ -0,0 +1 @@
+{ "result1": "中文字符" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string2.adm b/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string2.adm
new file mode 100644
index 0000000..8ab1bd7
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/codepoint-to-string2.adm
@@ -0,0 +1 @@
+{ "f1": "", "f2": "abc" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/concat1.adm b/asterix-app/src/test/resources/runtimets/results/string/concat1.adm
new file mode 100644
index 0000000..cea6e76
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/concat1.adm
@@ -0,0 +1 @@
+{ "result1": "aa25991bb31526", "result2": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/end-with1.adm b/asterix-app/src/test/resources/runtimets/results/string/end-with1.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/end-with1.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/end-with2.adm b/asterix-app/src/test/resources/runtimets/results/string/end-with2.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/end-with2.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/end-with3.adm b/asterix-app/src/test/resources/runtimets/results/string/end-with3.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/end-with3.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/end-with4.adm b/asterix-app/src/test/resources/runtimets/results/string/end-with4.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/end-with4.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/end-with5.adm b/asterix-app/src/test/resources/runtimets/results/string/end-with5.adm
new file mode 100644
index 0000000..c13d3dc
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/end-with5.adm
@@ -0,0 +1 @@
+{ "f1": true, "f2": false, "f3": true, "f4": false, "f5": true, "f6": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/length.adm b/asterix-app/src/test/resources/runtimets/results/string/length.adm
new file mode 100644
index 0000000..45a976e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/length.adm
@@ -0,0 +1 @@
+{ "result1": 6, "result2": 0, "result3": null }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/lowercase.adm b/asterix-app/src/test/resources/runtimets/results/string/lowercase.adm
new file mode 100644
index 0000000..a20b9aa
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/lowercase.adm
@@ -0,0 +1 @@
+{ "result1": "hellow", "result2": "", "result3": null }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches1.adm b/asterix-app/src/test/resources/runtimets/results/string/matches1.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches1.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches2.adm b/asterix-app/src/test/resources/runtimets/results/string/matches2.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches2.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches21.adm b/asterix-app/src/test/resources/runtimets/results/string/matches21.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches21.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches22.adm b/asterix-app/src/test/resources/runtimets/results/string/matches22.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches22.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches23.adm b/asterix-app/src/test/resources/runtimets/results/string/matches23.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches23.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matches3.adm b/asterix-app/src/test/resources/runtimets/results/string/matches3.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matches3.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/matchesnull.adm b/asterix-app/src/test/resources/runtimets/results/string/matchesnull.adm
new file mode 100644
index 0000000..6126426
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/matchesnull.adm
@@ -0,0 +1 @@
+{ "result1": false, "result2": false, "result3": true, "result4": false, "result5": false, "result6": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/replace1.adm b/asterix-app/src/test/resources/runtimets/results/string/replace1.adm
new file mode 100644
index 0000000..5f992ce
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/replace1.adm
@@ -0,0 +1 @@
+{ "result1": "brcdbr", "result2": "abbraccaddabbra", "result3": "carted" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/replace2.adm b/asterix-app/src/test/resources/runtimets/results/string/replace2.adm
new file mode 100644
index 0000000..fa45140
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/replace2.adm
@@ -0,0 +1 @@
+{ "result1": "a*cada*" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/replace21.adm b/asterix-app/src/test/resources/runtimets/results/string/replace21.adm
new file mode 100644
index 0000000..9fd2e6a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/replace21.adm
@@ -0,0 +1 @@
+{ "result1": "abracadabra", "result2": "akkkcadakkk", "result3": "kkk" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/replace22.adm b/asterix-app/src/test/resources/runtimets/results/string/replace22.adm
new file mode 100644
index 0000000..21ca784
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/replace22.adm
@@ -0,0 +1 @@
+{ "result1": "abracadabra", "result2": "aXXXcadaXXX", "result3": null, "result4": "aXXXcadaXXX", "result5": "XXXaXXXbXXXrXXXaXXXcXXXaXXXdXXXaXXXbXXXrXXXaXXX", "result6": "acada", "result7": "acada", "result8": "XXXaXXXbXXXrXXXaXXXcXXXaXXXdXXXaXXXbXXXrXXXaXXX" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/replace3.adm b/asterix-app/src/test/resources/runtimets/results/string/replace3.adm
new file mode 100644
index 0000000..3882682
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/replace3.adm
@@ -0,0 +1 @@
+{ "result1": "*" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/start-with1.adm b/asterix-app/src/test/resources/runtimets/results/string/start-with1.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/start-with1.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/start-with2.adm b/asterix-app/src/test/resources/runtimets/results/string/start-with2.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/start-with2.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/start-with3.adm b/asterix-app/src/test/resources/runtimets/results/string/start-with3.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/start-with3.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/start-with4.adm b/asterix-app/src/test/resources/runtimets/results/string/start-with4.adm
new file mode 100644
index 0000000..c13d3dc
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/start-with4.adm
@@ -0,0 +1 @@
+{ "f1": true, "f2": false, "f3": true, "f4": false, "f5": true, "f6": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/start-with5.adm b/asterix-app/src/test/resources/runtimets/results/string/start-with5.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/start-with5.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-concat1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-concat1.adm
new file mode 100644
index 0000000..a5becc3
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-concat1.adm
@@ -0,0 +1 @@
+{ "result1": "aa25991bb31526" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-equal-true1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-equal-true1.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-equal-true1.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-equal1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-equal1.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-equal1.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-equal2.adm b/asterix-app/src/test/resources/runtimets/results/string/string-equal2.adm
new file mode 100644
index 0000000..538da31
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-equal2.adm
@@ -0,0 +1 @@
+{ "result1": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-equal3.adm b/asterix-app/src/test/resources/runtimets/results/string/string-equal3.adm
new file mode 100644
index 0000000..ea9ca72
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-equal3.adm
@@ -0,0 +1 @@
+{ "result1": false }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-equal4.adm b/asterix-app/src/test/resources/runtimets/results/string/string-equal4.adm
new file mode 100644
index 0000000..71a9bb6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-equal4.adm
@@ -0,0 +1 @@
+{ "result1": true, "result3": false, "result4": false, "result5": true }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-join1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-join1.adm
new file mode 100644
index 0000000..7276381
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-join1.adm
@@ -0,0 +1 @@
+{ "result0": "aa::25991::bb::31526", "result1": "aa25991bb31526" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint.adm b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint.adm
new file mode 100644
index 0000000..c67c60e
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint.adm
@@ -0,0 +1 @@
+{ "result1": [ 97, 98, 99, 100 ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint1.adm b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint1.adm
new file mode 100644
index 0000000..46eca36
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/string-to-codepoint1.adm
@@ -0,0 +1 @@
+{ "result1": [  ] }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-after-1.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-after-1.adm
new file mode 100644
index 0000000..197a7af
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-after-1.adm
@@ -0,0 +1 @@
+{ "result1": "low" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-after-2.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-after-2.adm
new file mode 100644
index 0000000..04393a4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-after-2.adm
@@ -0,0 +1 @@
+{ "result1": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-after-3.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-after-3.adm
new file mode 100644
index 0000000..04393a4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-after-3.adm
@@ -0,0 +1 @@
+{ "result1": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-after-4.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-after-4.adm
new file mode 100644
index 0000000..9406ef5
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-after-4.adm
@@ -0,0 +1 @@
+{ "result1": "HEllow", "result2": "HEllow", "result3": "", "result4": "", "result5": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-before-1.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-before-1.adm
new file mode 100644
index 0000000..1c6a7d7
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-before-1.adm
@@ -0,0 +1 @@
+{ "result1": "HE" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-before-2.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-before-2.adm
new file mode 100644
index 0000000..04393a4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-before-2.adm
@@ -0,0 +1 @@
+{ "result1": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring-before-3.adm b/asterix-app/src/test/resources/runtimets/results/string/substring-before-3.adm
new file mode 100644
index 0000000..9ce64e4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring-before-3.adm
@@ -0,0 +1 @@
+{ "result1": "", "result2": "", "result3": "", "result4": "", "result5": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring2-1.adm b/asterix-app/src/test/resources/runtimets/results/string/substring2-1.adm
new file mode 100644
index 0000000..411e803
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring2-1.adm
@@ -0,0 +1 @@
+{ "result1": "Ellow" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring2-2.adm b/asterix-app/src/test/resources/runtimets/results/string/substring2-2.adm
new file mode 100644
index 0000000..5b0c7b9
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring2-2.adm
@@ -0,0 +1 @@
+{ "result1": "HEllow" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring2-3.adm b/asterix-app/src/test/resources/runtimets/results/string/substring2-3.adm
new file mode 100644
index 0000000..04393a4
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring2-3.adm
@@ -0,0 +1 @@
+{ "result1": "" }
diff --git a/asterix-app/src/test/resources/runtimets/results/string/substring2-4.adm b/asterix-app/src/test/resources/runtimets/results/string/substring2-4.adm
new file mode 100644
index 0000000..5b0c7b9
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/string/substring2-4.adm
@@ -0,0 +1 @@
+{ "result1": "HEllow" }