cmdlineTests: Extract script-based test out of cmdlineTests.sh

- Just extraction, with as few changes to the code as possible.

test/cmdlineTests/~assembler_modes/test.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# shellcheck source=scripts/common.sh
+source "${REPO_ROOT}/scripts/common.sh"
+
+function test_solc_assembly_output
+{
+    local input="${1}"
+    local expected="${2}"
+    IFS=" " read -r -a solc_args <<< "${3}"
+
+    local expected_object="object \"object\" { code ${expected} }"
+
+    output=$(echo "${input}" | msg_on_error --no-stderr "$SOLC" - "${solc_args[@]}")
+    empty=$(echo "$output" | tr '\n' ' ' | tr -s ' ' | sed -ne "/${expected_object}/p")
+    if [ -z "$empty" ]
+    then
+        printError "Incorrect assembly output. Expected: "
+        >&2 echo -e "${expected}"
+        printError "with arguments ${solc_args[*]}, but got:"
+        >&2 echo "${output}"
+        fail
+    fi
+}
+
+printTask "Testing assemble, yul, strict-assembly and optimize..."
+(
+    echo '{}' | msg_on_error --silent "$SOLC" - --assemble
+    echo '{}' | msg_on_error --silent "$SOLC" - --yul
+    echo '{}' | msg_on_error --silent "$SOLC" - --strict-assembly
+
+    # Test options above in conjunction with --optimize.
+    # Using both, --assemble and --optimize should fail.
+    echo '{}' | "$SOLC" - --assemble --optimize &>/dev/null && fail "solc --assemble --optimize did not fail as expected."
+    echo '{}' | "$SOLC" - --yul --optimize &>/dev/null && fail "solc --yul --optimize did not fail as expected."
+
+    # Test yul and strict assembly output
+    # Non-empty code results in non-empty binary representation with optimizations turned off,
+    # while it results in empty binary representation with optimizations turned on.
+    test_solc_assembly_output "{ let x:u256 := 0:u256 }" "{ let x := 0 }" "--yul"
+    test_solc_assembly_output "{ let x:u256 := bitnot(7:u256) }" "{ let x := bitnot(7) }" "--yul"
+    test_solc_assembly_output "{ let t:bool := not(true) }" "{ let t:bool := not(true) }" "--yul"
+    test_solc_assembly_output "{ let x := 0 }" "{ let x := 0 }" "--strict-assembly"
+    test_solc_assembly_output "{ let x := 0 }" "{ { } }" "--strict-assembly --optimize"
+)